[ { "key": "DTMS4JXQ", "version": 3, "library": { "type": "group", "id": 275404, "name": "CRPG", "links": { "alternate": { "href": "https://www.zotero.org/groups/crpg", "type": "text/html" } } }, "links": { "self": { "href": "https://api.zotero.org/groups/275404/items/DTMS4JXQ", "type": "application/json" }, "alternate": { "href": "https://www.zotero.org/groups/crpg/items/DTMS4JXQ", "type": "text/html" } }, "meta": { "createdByUser": { "id": 1721057, "username": "pya", "name": "", "links": { "alternate": { "href": "https://www.zotero.org/pya", "type": "text/html" } } }, "creatorSummary": "Merle et al.", "parsedDate": "2014-01", "numChildren": 0 }, "data": { "key": "DTMS4JXQ", "version": 3, "itemType": "journalArticle", "title": "Sr, Nd, Pb and Os Isotope Systematics of CAMP Tholeiites from Eastern North America (ENA): Evidence of a Subduction-enriched Mantle Source", "creators": [ { "creatorType": "author", "firstName": "Renaud", "lastName": "Merle" }, { "creatorType": "author", "firstName": "Andrea", "lastName": "Marzoli" }, { "creatorType": "author", "firstName": "Laurie", "lastName": "Reisberg" }, { "creatorType": "author", "firstName": "Herve", "lastName": "Bertrand" }, { "creatorType": "author", "firstName": "Alexander", "lastName": "Nemchin" }, { "creatorType": "author", "firstName": "Massimo", "lastName": "Chiaradia" }, { "creatorType": "author", "firstName": "Sara", "lastName": "Callegaro" }, { "creatorType": "author", "firstName": "Fred", "lastName": "Jourdan" }, { "creatorType": "author", "firstName": "Giuliano", "lastName": "Bellieni" }, { "creatorType": "author", "firstName": "Dan", "lastName": "Kontak" }, { "creatorType": "author", "firstName": "John", "lastName": "Puffer" }, { "creatorType": "author", "firstName": "J. Gregory", "lastName": "McHone" } ], "abstractNote": "The Central Atlantic Magmatic Province (CAMP) is one of the largest igneous provinces on Earth, with an areal extent exceeding 10(7) km(2). Here we document the geochemical characteristics of CAMP basalts from Triassic-Jurassic basins in northeastern USA and Nova Scotia (Canada). The CAMP rocks occur as lava flows, sills and dykes. All of our analysed samples show chemical characteristics typical of CAMP basalts with low titanium content, which include enrichment in the most incompatible elements and negative Nb anomalies. All the basalts also show enriched Sr-Nd-Pb initial (t = 201 Ma) isotopic compositions (Pb-206/Pb-204(ini.) = 18 center dot 155-18 center dot 691, Pb-207/Pb-204(ini.) = 15 center dot 616-15 center dot 668, Pb-208/Pb-204(ini.) = 38 center dot 160-38 center dot 616, Nd-143/Nd-144(ini.) = 0 center dot 512169-0 center dot 512499). On the basis of stratigraphy, rare earth element (REE) chemistry and Sr-Nd-Pb isotope composition, three chemical groups are defined. The Hook Mountain group, with the lowest La/Yb ratios, initial Pb-206/Pb-204(ini.) > 18 center dot 5 and Nd-143/Nd-144(ini.) > 0 center dot 51238, comprises all the lastest and upper stratigraphic units. The Preakness group, with intermediate La/Yb ratios, Pb-206/Pb-204(ini.) > 18 center dot 5 and 0 center dot 51233 > Nd-143/Nd-144(ini.) > 0 center dot 51225, comprises the intermediate units. The Orange Mountain group has the highest La/Yb ratios and Nd-143/Nd-144(ini.) < 0 center dot 51235 and involves all the earliest and stratigraphically lowest units, including the entire North Mountain basalts from Nova Scotia. In this last group, three sub-groups may be distinguished: the Rapidan sill, which has Pb-206/Pb-204(ini.) higher than 18 center dot 5, the Shelburne sub-group, which has Nd-143/Nd-144(ini.) < 0 center dot 51225, and the remaining Orange Mt samples. With the exception of one sample, the Eastern North America (ENA) CAMP basalts display initial Os-187/Os-188 ratios in the range of mantle-derived magmas (< 0 center dot 15). Simple modelling shows that the composition of the ENA CAMP basalts cannot plausibly be explained solely by crustal contamination of oceanic island basalt (OIB), mid-ocean ridge basalt (MORB) or oceanic plateau basalt (OPB) magmas. Mixing of such magma compositions with sub-continental lithospheric mantle (SCLM)-derived melts followed by crustal contamination, by either assimilation-fractional crystallization (AFC) or assimilation through turbulent ascent (ATA) processes is somewhat more successful. However, this latter scenario does not reproduce the REE and isotopic composition of the ENA CAMP in a fully satisfactory manner. Alternatively, we propose a model in which asthenospheric mantle overlying a subducted slab (i.e. mantle wedge) was enriched during Cambrian to Devonian subduction by sedimentary material, isotopically equivalent to Proterozoic-Lower Paleozoic crustal rocks. Subsequently, after subduction ceased, the isotopic composition of this mantle evolved by radioactive decay for another 170 Myr until the CAMP magmatic event. Varying amounts and compositions of the incorporated sedimentary component coupled with radiogenic ingrowth over time can account for the main geochemical characteristics of the ENA CAMP (enriched incompatible element patterns, negative Nb anomalies, enriched Sr-Nd-Pb isotopic composition) and the differences between the three chemical groups.", "publicationTitle": "JOURNAL OF PETROLOGY", "publisher": "", "place": "", "date": "janvier 2014", "volume": "55", "issue": "1", "section": "", "partNumber": "", "partTitle": "", "pages": "133-180", "series": "", "seriesTitle": "", "seriesText": "", "journalAbbreviation": "", "DOI": "10.1093/petrology/egt063", "citationKey": "", "url": "", "accessDate": "", "PMID": "", "PMCID": "", "ISSN": "0022-3530", "archive": "", "archiveLocation": "", "shortTitle": "", "language": "English", "libraryCatalog": "", "callNumber": "", "rights": "", "extra": "", "tags": [ { "tag": "Re-Os isotopes" }, { "tag": "flood basalt" }, { "tag": "subcontinental lithospheric mantle" } ], "collections": [ "37A54ZND" ], "relations": {}, "dateAdded": "2014-10-23T13:12:48Z", "dateModified": "2014-10-23T13:12:48Z" } }, { "key": "Z5XKIV8K", "version": 3, "library": { "type": "group", "id": 275404, "name": "CRPG", "links": { "alternate": { "href": "https://www.zotero.org/groups/crpg", "type": "text/html" } } }, "links": { "self": { "href": "https://api.zotero.org/groups/275404/items/Z5XKIV8K", "type": "application/json" }, "alternate": { "href": "https://www.zotero.org/groups/crpg/items/Z5XKIV8K", "type": "text/html" } }, "meta": { "createdByUser": { "id": 1721057, "username": "pya", "name": "", "links": { "alternate": { "href": "https://www.zotero.org/pya", "type": "text/html" } } }, "creatorSummary": "Belissont et al.", "parsedDate": "2014-02-01", "numChildren": 0 }, "data": { "key": "Z5XKIV8K", "version": 3, "itemType": "journalArticle", "title": "LA-ICP-MS analyses of minor and trace elements and bulk Ge isotopes in zoned Ge-rich sphalerites from the Noailhac - Saint-Salvy deposit (France): Insights into incorporation mechanisms and ore deposition processes", "creators": [ { "creatorType": "author", "firstName": "Remi", "lastName": "Belissont" }, { "creatorType": "author", "firstName": "Marie-Christine", "lastName": "Boiron" }, { "creatorType": "author", "firstName": "Beatrice", "lastName": "Luais" }, { "creatorType": "author", "firstName": "Michel", "lastName": "Cathelineau" } ], "abstractNote": "The increasing worldwide demand in germanium (Ge) is driving renewed research for understanding its geological cycle and the factors controlling its concentration in minerals. The advent of accurate, high-resolution trace element analysis by LA-ICP-MS, as well as the advances in MC-ICP-MS technique for Ge isotopes in sulphides, has enhanced studies in this field. Ge isobaric interferences, standard calibration and data interpretation remain outstanding issues needing to be addressed for more precise and comprehensive LA-ICP-MS analyses. An integrated mineralogical and geochemical study was carried out on typical sphalerite (ZnS) samples from the main Ge deposit in western Europe: the vein-type Zn-Ge-Ag-(Pb-Cd) deposit of Noailhac - Saint-Salvy (Tarn, France). In situ coupled measurements of trace elements and S isotopes were performed using LA-ICP-MS and SIMS, respectively, together with bulk Ge isotopes by MC-ICP-MS. Principal component analyses revealed element clusters antithetically distributed within distinct zoning types in sphalerite: sector zonings are enriched in Cu, Ge, Ga, Sb and As, whereas rhythmic bandings (dark brown bands primarily) are enriched in Fe, Cd, In and Sn. This typical distribution points to crystallographic controls on trace element uptake during sphalerite growth, occurring with concomitant microscale variations in fluid compositions at the fluid-crystal interface. Regardless of the zoning type, in all spots, Cu contents approach the sum of tri- and tetravalent cations (Ge, Ga, In, etc.) so that Cu could provide charge-balance for the entire set of coupled substitution mechanisms responsible for the incorporation of the whole range of trace elements in this sphalerite. Strong binary correlations suggest direct substitutions as Zn2+ M (Fe2+, Cd2+) and coupled substitutions as 2Zn(2+) <-> Cu+ + Sb3+, 3Zn(2+) <-> Ge4+ + 2Ag(+), and 3Zn(2+) <-> In3+ + Sn3+ + square (vacancy) despite no clear evidence for the presence of Sn4+. delta(74) Ge-NIST3120a in bulk sphalerite varies from -2.07 +/- 0.37 parts per thousand to +0.91 +/- 0.16 parts per thousand(2 sigma SD) and positively correlates with bulk Ge content. This indicates considerable Ge isotopic fractionation within sphalerite during low-T hydrothermal deposition and zoning processes, associated with possible microscale open system fluid mixing. The trace element features in sphalerite from Saint-Salvy compared with those of other deposits confirm their use as discriminators among genetic types of ores (e. g., high In contents for magmatic-related deposits, and Ge for low-temperature deposits). (C) 2013 Elsevier Ltd. All rights reserved.", "publicationTitle": "GEOCHIMICA ET COSMOCHIMICA ACTA", "publisher": "", "place": "", "date": "FEB 1 2014", "volume": "126", "issue": "", "section": "", "partNumber": "", "partTitle": "", "pages": "518-540", "series": "", "seriesTitle": "", "seriesText": "", "journalAbbreviation": "", "DOI": "10.1016/j.gca.2013.10.052", "citationKey": "", "url": "", "accessDate": "", "PMID": "", "PMCID": "", "ISSN": "0016-7037", "archive": "", "archiveLocation": "", "shortTitle": "", "language": "English", "libraryCatalog": "", "callNumber": "", "rights": "", "extra": "", "tags": [], "collections": [ "37A54ZND" ], "relations": {}, "dateAdded": "2014-10-23T13:12:48Z", "dateModified": "2014-10-23T13:12:48Z" } }, { "key": "UTRKEF62", "version": 3, "library": { "type": "group", "id": 275404, "name": "CRPG", "links": { "alternate": { "href": "https://www.zotero.org/groups/crpg", "type": "text/html" } } }, "links": { "self": { "href": "https://api.zotero.org/groups/275404/items/UTRKEF62", "type": "application/json" }, "alternate": { "href": "https://www.zotero.org/groups/crpg/items/UTRKEF62", "type": "text/html" } }, "meta": { "createdByUser": { "id": 1721057, "username": "pya", "name": "", "links": { "alternate": { "href": "https://www.zotero.org/pya", "type": "text/html" } } }, "creatorSummary": "Licht et al.", "parsedDate": "2014", "numChildren": 0 }, "data": { "key": "UTRKEF62", "version": 3, "itemType": "journalArticle", "title": "Role of permeability barriers in alluvial hydromorphic palaeosols: The Eocene Pondaung Formation, Myanmar", "creators": [ { "creatorType": "author", "firstName": "Alexis", "lastName": "Licht" }, { "creatorType": "author", "firstName": "Isabelle", "lastName": "Cojan" }, { "creatorType": "author", "firstName": "Laurent", "lastName": "Caner" }, { "creatorType": "author", "firstName": "Aung Naing", "lastName": "Soe" }, { "creatorType": "author", "firstName": "Jean-Jacques", "lastName": "Jaeger" }, { "creatorType": "author", "firstName": "Christian", "lastName": "France-Lanord" } ], "abstractNote": "This study examines the lateral distribution of hydromorphy in the fine-grained alluvial deposits of the Eocene Pondaung Formation, central Myanmar. Through detailed outcrop analysis and using a combined sedimentological and pedological approach, this study proposes a reconstruction of Pondaung overbank floodplain palaeoenvironments. The variations of hydromorphic features in the different overbank sub-environments are then discussed and used to build a model of hydromorphic variability in alluvial deposits. Two main architectural associations with distinctive lithofacies and pedogenic features were identified, corresponding to different sub-environments: heterolithic deposits and extensive mudstone successions. The heterolithic deposits display variegated fine-grained lithofacies and contain poorly developed palaeosols with gley and vertic features, which are interpreted to reflect a seasonal wetlands landscape, developed in actively aggrading avulsion belts. Extensive mudstone successions with Vertisols that locally exhibit mukkara-style pseudogley features are interpreted to represent a distal open-forested environment. The palaeosols of both sub-environments display dense local hydromorphic variations they are also characterized by a gradual shift from gley-dominated to pseudogley-dominated features with increasing distance from the avulsion belt. The clay-dominated lithology of the floodplain parent material, which forms numerous subsurface permeability barriers, is shown to have acted as a fundamental control in limiting water-table dynamics in coarse-grained parts of the succession, thereby favouring hydromorphic variability. Palaeosol sequences of the Pondaung Formation contrast with the soil-landscape associations described in other studies and provide an alternative model with which to account for the hydromorphic variability in poorly drained, alluvial soils. The model proposed as an outcome of this study demonstrates that hydromorphic variations can be dramatic in floodplains where permeability barriers are numerous. Further, the model stresses the importance of undertaking detailed lateral palaeosol analyses prior to making interpretations regarding hydromorphic variability.", "publicationTitle": "SEDIMENTOLOGY", "publisher": "", "place": "", "date": "février 2014", "volume": "61", "issue": "2", "section": "", "partNumber": "", "partTitle": "", "pages": "362-382", "series": "", "seriesTitle": "", "seriesText": "", "journalAbbreviation": "", "DOI": "10.1111/sed.12059", "citationKey": "", "url": "", "accessDate": "", "PMID": "", "PMCID": "", "ISSN": "0037-0746", "archive": "", "archiveLocation": "", "shortTitle": "", "language": "English", "libraryCatalog": "", "callNumber": "", "rights": "", "extra": "", "tags": [ { "tag": "Eocene" }, { "tag": "Myanmar" }, { "tag": "fluvial sedimentology" }, { "tag": "hydromorphy" }, { "tag": "palaeosol" } ], "collections": [ "37A54ZND" ], "relations": {}, "dateAdded": "2014-10-23T13:12:48Z", "dateModified": "2014-10-23T13:12:48Z" } }, { "key": "RR8TRJQT", "version": 3, "library": { "type": "group", "id": 275404, "name": "CRPG", "links": { "alternate": { "href": "https://www.zotero.org/groups/crpg", "type": "text/html" } } }, "links": { "self": { "href": "https://api.zotero.org/groups/275404/items/RR8TRJQT", "type": "application/json" }, "alternate": { "href": "https://www.zotero.org/groups/crpg/items/RR8TRJQT", "type": "text/html" } }, "meta": { "createdByUser": { "id": 1721057, "username": "pya", "name": "", "links": { "alternate": { "href": "https://www.zotero.org/pya", "type": "text/html" } } }, "creatorSummary": "France-Lanord et al.", "parsedDate": "2014-02-05", "numChildren": 0 }, "data": { "key": "RR8TRJQT", "version": 3, "itemType": "journalArticle", "title": "Atomistic amorphous/crystalline interface modelling for superlattices and core/shell nanowires", "creators": [ { "creatorType": "author", "firstName": "Arthur", "lastName": "France-Lanord" }, { "creatorType": "author", "firstName": "Etienne", "lastName": "Blandre" }, { "creatorType": "author", "firstName": "Tristan", "lastName": "Albaret" }, { "creatorType": "author", "firstName": "Samy", "lastName": "Merabia" }, { "creatorType": "author", "firstName": "David", "lastName": "Lacroix" }, { "creatorType": "author", "firstName": "Konstantinos", "lastName": "Termentzidis" } ], "abstractNote": "In this paper we present a systematic and well controlled procedure for building atomistic amorphous/crystalline interfaces in silicon, dedicated to the molecular dynamics simulations of superlattices and core/shell nanowires. The obtained structures depend on the technique used to generate the amorphous phase and their overall quality is estimated through comparisons with structural information and interfacial energies available from experimental and theoretical results. While most of the related studies focus on a single planar interface, we consider here both the generation of multiple superlattice planar interfaces and core/shell nanowire structures. The proposed method provides periodic homogeneous and reproducible, atomically sharp and defect free interface configurations at low temperature and pressure. We also illustrate how the method may be used to predict the thermal transport properties of composite crystalline/amorphous superlattices.", "publicationTitle": "JOURNAL OF PHYSICS-CONDENSED MATTER", "publisher": "", "place": "", "date": "FEB 5 2014", "volume": "26", "issue": "5", "section": "", "partNumber": "", "partTitle": "", "pages": "", "series": "", "seriesTitle": "", "seriesText": "", "journalAbbreviation": "", "DOI": "10.1088/0953-8984/26/5/055011", "citationKey": "", "url": "", "accessDate": "", "PMID": "", "PMCID": "", "ISSN": "0953-8984", "archive": "", "archiveLocation": "", "shortTitle": "", "language": "English", "libraryCatalog": "", "callNumber": "", "rights": "", "extra": "", "tags": [ { "tag": "Dynamics" }, { "tag": "amorphous/crystalline structures" }, { "tag": "core-shell nanowires" }, { "tag": "mechanical and thermal properties" }, { "tag": "molecular" }, { "tag": "solid-solid interfaces" }, { "tag": "superlattices" }, { "tag": "thermal conductivity" } ], "collections": [ "37A54ZND" ], "relations": {}, "dateAdded": "2014-10-23T13:12:48Z", "dateModified": "2014-10-23T13:12:48Z" } }, { "key": "NUBHAU5X", "version": 3, "library": { "type": "group", "id": 275404, "name": "CRPG", "links": { "alternate": { "href": "https://www.zotero.org/groups/crpg", "type": "text/html" } } }, "links": { "self": { "href": "https://api.zotero.org/groups/275404/items/NUBHAU5X", "type": "application/json" }, "alternate": { "href": "https://www.zotero.org/groups/crpg/items/NUBHAU5X", "type": "text/html" } }, "meta": { "createdByUser": { "id": 1721057, "username": "pya", "name": "", "links": { "alternate": { "href": "https://www.zotero.org/pya", "type": "text/html" } } }, "creatorSummary": "Wilson and Lave", "parsedDate": "2014-03-01", "numChildren": 0 }, "data": { "key": "NUBHAU5X", "version": 3, "itemType": "journalArticle", "title": "Convergent evolution of abrading flow obstacles: Insights from analogue modelling of fluvial bedrock abrasion by coarse bedload", "creators": [ { "creatorType": "author", "firstName": "Andrew", "lastName": "Wilson" }, { "creatorType": "author", "firstName": "Jerome", "lastName": "Lave" } ], "abstractNote": "Upstream-facing convex surfaces (UFCS) are formed by bedload abrasion in bedrock rivers and indicate the recent, significant action of bedload abrasion in causing channel incision. Beyond this, little is known of the dynamics of UFCS and the effect of substrate and bedload properties on rates and distribution of bedload abrasion for these bed roughness elements. Grain size populations from 1 to 8 cm (b-axis, in 1- or 2-cm bin widths) were used to bombard preshaped marble and limestone targets bolted to the base of an annular flume. The control of initial shape and lithology of the target and the erodent grain size and lithology were investigated by monitoring the evolution of the target form using laser scanning at predefined time intervals. Eleven experiment suites were carried out containing three initial target shapes constructed from two lithologies, four bedload (erodent) grain sizes of either granodiorites or limestone, or clear water flow. All 10 targets abraded by bedload evolved from their initial form into a steady state (time invariant) form, producing UFCSs. Steady state forms were closely similar for all targets despite different initial conditions. Bedload grain size has a strong control on this equilibrium form, related to the transit path of the grains when moving over the target, whilst initial target form has only a weak control. Steady state morphology is achieved more rapidly with harder erodent bedload particles and/or softer targets. Upstream-facing convex surface stoss sides were characterised by a brighter, sugary, granular appearance on the rock-forming grain scale. Increasing erodent grain size, for a fixed bedload mass, increased the bulk abrasion rate at fixed flow speed and discharge. No detectable erosion occurred for a limestone block in clear water flows under the same flow conditions, indicating solution and cavitation were insignificant mechanisms of erosion in this study. During the experiment suites, suspended load abrasion was also found to be an insignificant mechanism in eroding lee or lateral sides. In natural settings, the initial formation of UFCSs can occur for homogenous and/or jointed substrates in close association with plucking or, alternatively, for heterogeneous substrates by variation in substrate erodibility. (C) 2013 Elsevier B.V. All rights reserved.", "publicationTitle": "GEOMORPHOLOGY", "publisher": "", "place": "", "date": "MAR 1 2014", "volume": "208", "issue": "", "section": "", "partNumber": "", "partTitle": "", "pages": "207-224", "series": "", "seriesTitle": "", "seriesText": "", "journalAbbreviation": "", "DOI": "10.1016/j.geomorph.2013.11.024", "citationKey": "", "url": "", "accessDate": "", "PMID": "", "PMCID": "", "ISSN": "0169-555X", "archive": "", "archiveLocation": "", "shortTitle": "", "language": "English", "libraryCatalog": "", "callNumber": "", "rights": "", "extra": "", "tags": [ { "tag": "Bedrock bedforms" }, { "tag": "Bedrock rivers" }, { "tag": "Erosion" }, { "tag": "Flume studies" }, { "tag": "Impact abrasion" }, { "tag": "Sculpted forms" } ], "collections": [ "37A54ZND" ], "relations": {}, "dateAdded": "2014-10-23T13:12:48Z", "dateModified": "2014-10-23T13:12:48Z" } }, { "key": "WFCWFFE6", "version": 3, "library": { "type": "group", "id": 275404, "name": "CRPG", "links": { "alternate": { "href": "https://www.zotero.org/groups/crpg", "type": "text/html" } } }, "links": { "self": { "href": "https://api.zotero.org/groups/275404/items/WFCWFFE6", "type": "application/json" }, "alternate": { "href": "https://www.zotero.org/groups/crpg/items/WFCWFFE6", "type": "text/html" } }, "meta": { "createdByUser": { "id": 1721057, "username": "pya", "name": "", "links": { "alternate": { "href": "https://www.zotero.org/pya", "type": "text/html" } } }, "creatorSummary": "Pignatelli et al.", "parsedDate": "2014-03", "numChildren": 0 }, "data": { "key": "WFCWFFE6", "version": 3, "itemType": "journalArticle", "title": "A multi-technique, micrometer- to atomic-scale description of a synthetic analogue of chukanovite, Fe-2(CO3)(OH)(2)", "creators": [ { "creatorType": "author", "firstName": "Isabella", "lastName": "Pignatelli" }, { "creatorType": "author", "firstName": "Enrico", "lastName": "Mugnaioli" }, { "creatorType": "author", "firstName": "Regine", "lastName": "Mosser-Ruck" }, { "creatorType": "author", "firstName": "Odile", "lastName": "Barres" }, { "creatorType": "author", "firstName": "Ute", "lastName": "Kolb" }, { "creatorType": "author", "firstName": "Nicolas", "lastName": "Michau" } ], "abstractNote": "A synthetic analogue of chukanovite Fe-2(CO3)(OH)(2) is formed during experimental work on iron-clay interactions simulating the cooling of containers in radioactive waste repositories. Despite its small size and the mixture with other minerals it is undoubtedly identified by X-Ray Diffraction, Fourier Transform Infrared Spectroscopy, Scanning Electron Microscopy and Transmission Electron Microscopy. For the first time, the structural characterisation of a synthetic chukanovite is carried out thanks to the combination of Automated Diffraction Tomography and Precession Electron Diffraction. Refinement results and comparison with literature data show that the structure of this synthetic chukanovite is consistent with that proposed for natural chukanovite found in Dronino meteorite.", "publicationTitle": "EUROPEAN JOURNAL OF MINERALOGY", "publisher": "", "place": "", "date": "mars 2014", "volume": "26", "issue": "2", "section": "", "partNumber": "", "partTitle": "", "pages": "221-229", "series": "", "seriesTitle": "", "seriesText": "", "journalAbbreviation": "", "DOI": "10.1127/0935-1221/2014/0026-2370", "citationKey": "", "url": "", "accessDate": "", "PMID": "", "PMCID": "", "ISSN": "0935-1221", "archive": "", "archiveLocation": "", "shortTitle": "", "language": "English", "libraryCatalog": "", "callNumber": "", "rights": "", "extra": "", "tags": [ { "tag": "Automated Diffraction Tomography" }, { "tag": "chukanovite" }, { "tag": "electron diffraction" }, { "tag": "iron hydroxide carbonate" }, { "tag": "iron-clay interaction" }, { "tag": "nuclear waste storage" } ], "collections": [ "37A54ZND" ], "relations": {}, "dateAdded": "2014-10-23T13:12:48Z", "dateModified": "2014-10-23T13:12:48Z" } }, { "key": "Q7Q8E3A7", "version": 3, "library": { "type": "group", "id": 275404, "name": "CRPG", "links": { "alternate": { "href": "https://www.zotero.org/groups/crpg", "type": "text/html" } } }, "links": { "self": { "href": "https://api.zotero.org/groups/275404/items/Q7Q8E3A7", "type": "application/json" }, "alternate": { "href": "https://www.zotero.org/groups/crpg/items/Q7Q8E3A7", "type": "text/html" } }, "meta": { "createdByUser": { "id": 1721057, "username": "pya", "name": "", "links": { "alternate": { "href": "https://www.zotero.org/pya", "type": "text/html" } } }, "creatorSummary": "Tang et al.", "parsedDate": "2014-03-04", "numChildren": 0 }, "data": { "key": "Q7Q8E3A7", "version": 3, "itemType": "journalArticle", "title": "Abnormal lithium isotope composition from the ancient lithospheric mantle beneath the North China Craton", "creators": [ { "creatorType": "author", "firstName": "Yan-Jie", "lastName": "Tang" }, { "creatorType": "author", "firstName": "Hong-Fu", "lastName": "Zhang" }, { "creatorType": "author", "firstName": "Etienne", "lastName": "Deloule" }, { "creatorType": "author", "firstName": "Ben-Xun", "lastName": "Su" }, { "creatorType": "author", "firstName": "Ji-Feng", "lastName": "Ying" }, { "creatorType": "author", "firstName": "M.", "lastName": "Santosh" }, { "creatorType": "author", "firstName": "Yan", "lastName": "Xiao" } ], "abstractNote": "Lithium elemental and isotopic compositions of olivines in peridotite xenoliths from Hebi in the North China Craton provide direct evidence for the highly variable delta Li-7 in Archean lithospheric mantle. The delta Li-7 in the cores of olivines from the Hebi high-Mg# peridotites (Fo > 91) show extreme variation from -27 to +21, in marked deviation from the delta Li-7 range of fresh MORB (+1.6 to +5.6) although the Li abundances of the olivines are within the range of normal mantle (1-2 ppm). The Li abundances and delta Li-7 characteristics of the Hebi olivines could not have been produced by recent diffusive-driven isotopic fractionation of Li and therefore the delta Li-7 in the cores of these olivines record the isotopic signature of the subcontinental lithospheric mantle. Our data demonstrate that abnormal delta Li-7 may be preserved in the ancient lithospheric mantle as observed in our study from the central North China Craton, which suggest that the subcontinental lithospheric mantle has experienced modification of fluid/melt derived from recycled oceanic crust.", "publicationTitle": "SCIENTIFIC REPORTS", "publisher": "", "place": "", "date": "MAR 4 2014", "volume": "4", "issue": "", "section": "", "partNumber": "", "partTitle": "", "pages": "", "series": "", "seriesTitle": "", "seriesText": "", "journalAbbreviation": "", "DOI": "10.1038/srep04274", "citationKey": "", "url": "", "accessDate": "", "PMID": "", "PMCID": "", "ISSN": "2045-2322", "archive": "", "archiveLocation": "", "shortTitle": "", "language": "English", "libraryCatalog": "", "callNumber": "", "rights": "", "extra": "", "tags": [], "collections": [ "37A54ZND" ], "relations": {}, "dateAdded": "2014-10-23T13:12:48Z", "dateModified": "2014-10-23T13:12:48Z" } }, { "key": "AZ9Q2QAX", "version": 3, "library": { "type": "group", "id": 275404, "name": "CRPG", "links": { "alternate": { "href": "https://www.zotero.org/groups/crpg", "type": "text/html" } } }, "links": { "self": { "href": "https://api.zotero.org/groups/275404/items/AZ9Q2QAX", "type": "application/json" }, "alternate": { "href": "https://www.zotero.org/groups/crpg/items/AZ9Q2QAX", "type": "text/html" } }, "meta": { "createdByUser": { "id": 1721057, "username": "pya", "name": "", "links": { "alternate": { "href": "https://www.zotero.org/pya", "type": "text/html" } } }, "creatorSummary": "Sinha et al.", "parsedDate": "2014-03-15", "numChildren": 0 }, "data": { "key": "AZ9Q2QAX", "version": 3, "itemType": "journalArticle", "title": "Shallow subsurface stratigraphy and alluvial architecture of the Kosi and Gandak megafans in the Himalayan foreland basin, India", "creators": [ { "creatorType": "author", "firstName": "Rajiv", "lastName": "Sinha" }, { "creatorType": "author", "firstName": "Jawed", "lastName": "Ahmad" }, { "creatorType": "author", "firstName": "Kumar", "lastName": "Gaurav" }, { "creatorType": "author", "firstName": "Guillaume", "lastName": "Morin" } ], "abstractNote": "The Kosi and the Gandak are two major Himalayan tributaries of the Ganga River in the north Bihar plains India. With a large hinterland in the Nepal Himalaya, both these rivers have generated megafans in the plains over the Quaternary time scale. Both these rivers are known to be highly dynamic and sediment-charged. A few conceptual models and limited field data suggested that these megafans have produced thick sand sheets over Late Quaternary period but these ideas have remained speculative and there is no data on the size and dimension of these sand bodies. This paper attempts to reconstruct the subsurface stratigraphy and alluvial architecture for the upper similar to 100 m of the megafans based on electrical resistivity soundings, borehole data and drill cores. Alluvial architecture of the Kosi megafan shows significant variability from proximal to medial parts of the fan in terms of sediment grain size and layer thicknesses. While the medial part shows similar to 20-30 m thick medium to coarse sand sheets which are laterally stacked, the proximal part of the fan has a dominantly gravel unit below similar to 15 m depth that is underlain and overlain by medium to coarse sand units. Further, the medial fan also shows significant vertical and lateral variability in alluvial stratigraphy. The near-surface (<20 m depth) deposits from the Kosi megafan have pockets of clay and silt within large amalgamated sand bodies whereas the shallow sub-surface (50-100 m depth) sediments are largely sandy and devoid of clay and silt pockets. Alluvial architecture of the Gandak megafan shows two major lithounits; the upper fan succession has a higher stacking density of smaller sand bodies perhaps reflecting the migratory behavior of the river whereas the lower succession shows narrow but thick sand fills reflecting incised channels. The western part of the Gandak megafan has more abundant sand bodies compared to the eastern side of the river along both transects. There are no significant differences between proximal and medial transects across the Gandak megafan. The absence of gravel deposits in the shallow subsurface of the Gandak megafan may be attributed to the presence of a prominent intermontane valley in the hinterland of the Gandak river which has acted as a `sediment filter' thereby trapping most of the coarser fraction. On the other hand, the Kosi river exits directly through the mountain front, and therefore, has been able to transport gravels into the plains in pre-historic times. Our study thus suggests significant variability in subsurface stratigraphy of the Kosi and the Gandak megafans even though they are located in similar geographic region. Such differences are attributed to the geomorphic diversity of the mountain exits of these megafans and their sediment transport history. (C) 2013 Elsevier B.V. All rights reserved.", "publicationTitle": "SEDIMENTARY GEOLOGY", "publisher": "", "place": "", "date": "MAR 15 2014", "volume": "301", "issue": "", "section": "", "partNumber": "", "partTitle": "", "pages": "133-149", "series": "", "seriesTitle": "", "seriesText": "", "journalAbbreviation": "", "DOI": "10.1016/j.sedgeo.2013.06.008", "citationKey": "", "url": "", "accessDate": "", "PMID": "", "PMCID": "", "ISSN": "0037-0738", "archive": "", "archiveLocation": "", "shortTitle": "", "language": "English", "libraryCatalog": "", "callNumber": "", "rights": "", "extra": "", "tags": [ { "tag": "Alluvial stratigraphy" }, { "tag": "Avulsive deposits" }, { "tag": "Fluvial megafans" }, { "tag": "Ganga plains" }, { "tag": "sediment flux" } ], "collections": [ "37A54ZND" ], "relations": {}, "dateAdded": "2014-10-23T13:12:48Z", "dateModified": "2014-10-23T13:12:48Z" } }, { "key": "4DJUNXTH", "version": 3, "library": { "type": "group", "id": 275404, "name": "CRPG", "links": { "alternate": { "href": "https://www.zotero.org/groups/crpg", "type": "text/html" } } }, "links": { "self": { "href": "https://api.zotero.org/groups/275404/items/4DJUNXTH", "type": "application/json" }, "alternate": { "href": "https://www.zotero.org/groups/crpg/items/4DJUNXTH", "type": "text/html" } }, "meta": { "createdByUser": { "id": 1721057, "username": "pya", "name": "", "links": { "alternate": { "href": "https://www.zotero.org/pya", "type": "text/html" } } }, "creatorSummary": "Lecomte et al.", "parsedDate": "2014", "numChildren": 0 }, "data": { "key": "4DJUNXTH", "version": 3, "itemType": "journalArticle", "title": "Uraniferous bitumen nodules in the Talvivaara Ni-Zn-Cu-Co deposit (Finland): influence of metamorphism on uranium mineralization in black shales", "creators": [ { "creatorType": "author", "firstName": "Andrei", "lastName": "Lecomte" }, { "creatorType": "author", "firstName": "Michel", "lastName": "Cathelineau" }, { "creatorType": "author", "firstName": "Etienne", "lastName": "Deloule" }, { "creatorType": "author", "firstName": "Marc", "lastName": "Brouand" }, { "creatorType": "author", "firstName": "Chantal", "lastName": "Peiffert" }, { "creatorType": "author", "firstName": "Kirsti", "lastName": "Loukola-Ruskeeniemi" }, { "creatorType": "author", "firstName": "Esa", "lastName": "Pohjolainen" }, { "creatorType": "author", "firstName": "Hannu", "lastName": "Lahtinen" } ], "abstractNote": "In the central part of the Fennoscandian Shield, the Talvivaara Ni-Zn-Cu-Co deposit, hosted by Palaeoproterozoic metamorphosed black schists, contains low uranium concentrations ranging from 10 to 30 ppm. The Talvivaara black schists were deposited 2.0-1.9 Ga ago and underwent subsequent metamorphism during the 1.9-1.79 Ga Svecofennian orogeny. Anhedral uraninite crystals rimmed by bitumen constitute the main host of uranium. U-Pb secondary ion mass spectrometry dating indicates that uraninite crystals were formed between 1,878 +/- 17 and 1,871 +/- 43 Ma, during peak metamorphism. Rare earth element patterns and high Th content (average 6.38 wt%) in disseminated uraninite crystals indicate that U was concentrated during high temperature metamorphism (> 400 A degrees C). The formation of bitumen rims around uraninite may be explained by two distinct scenarios: (a) a transport of U coincident with the migration of hydrocarbons or (b) post-metamorphic formation of bitumen rims, through radiolytic polymerization of gaseous hydrocarbons at the contact with uraninite.", "publicationTitle": "MINERALIUM DEPOSITA", "publisher": "", "place": "", "date": "avril 2014", "volume": "49", "issue": "4", "section": "", "partNumber": "", "partTitle": "", "pages": "513-533", "series": "", "seriesTitle": "", "seriesText": "", "journalAbbreviation": "", "DOI": "10.1007/s00126-013-0502-3", "citationKey": "", "url": "", "accessDate": "", "PMID": "", "PMCID": "", "ISSN": "0026-4598", "archive": "", "archiveLocation": "", "shortTitle": "", "language": "English", "libraryCatalog": "", "callNumber": "", "rights": "", "extra": "", "tags": [ { "tag": "Bitumen nodules" }, { "tag": "Black shale" }, { "tag": "Metamorphism" }, { "tag": "Talvivaara" }, { "tag": "Uranium" } ], "collections": [ "37A54ZND" ], "relations": {}, "dateAdded": "2014-10-23T13:12:48Z", "dateModified": "2014-10-23T13:12:48Z" } }, { "key": "6C2FGGSP", "version": 3, "library": { "type": "group", "id": 275404, "name": "CRPG", "links": { "alternate": { "href": "https://www.zotero.org/groups/crpg", "type": "text/html" } } }, "links": { "self": { "href": "https://api.zotero.org/groups/275404/items/6C2FGGSP", "type": "application/json" }, "alternate": { "href": "https://www.zotero.org/groups/crpg/items/6C2FGGSP", "type": "text/html" } }, "meta": { "createdByUser": { "id": 1721057, "username": "pya", "name": "", "links": { "alternate": { "href": "https://www.zotero.org/pya", "type": "text/html" } } }, "creatorSummary": "Luporsi et al.", "parsedDate": "2014", "numChildren": 0 }, "data": { "key": "6C2FGGSP", "version": 3, "itemType": "journalArticle", "title": "uPA/PAI-1, Oncotype DX (TM), MammaPrintA (R) Prognosis and predictive values for clinical utility in breast cancer management", "creators": [ { "creatorType": "author", "firstName": "E.", "lastName": "Luporsi" }, { "creatorType": "author", "firstName": "J. P.", "lastName": "Bellocq" }, { "creatorType": "author", "firstName": "J.", "lastName": "Barriere" }, { "creatorType": "author", "firstName": "J.", "lastName": "Bonastre" }, { "creatorType": "author", "firstName": "J.", "lastName": "Chetritt" }, { "creatorType": "author", "firstName": "A. G.", "lastName": "Le Corroller" }, { "creatorType": "author", "firstName": "P.", "lastName": "de Cremoux" }, { "creatorType": "author", "firstName": "F.", "lastName": "Fina" }, { "creatorType": "author", "firstName": "A. S.", "lastName": "Gauchez" }, { "creatorType": "author", "firstName": "P. J.", "lastName": "Lamy" }, { "creatorType": "author", "firstName": "P. M.", "lastName": "Martin" }, { "creatorType": "author", "firstName": "C.", "lastName": "Mazouni" }, { "creatorType": "author", "firstName": "J. P.", "lastName": "Peyrat" }, { "creatorType": "author", "firstName": "G.", "lastName": "Romieu" }, { "creatorType": "author", "firstName": "L.", "lastName": "Verdoni" }, { "creatorType": "author", "firstName": "V.", "lastName": "Mazeau-Woynar" }, { "creatorType": "author", "firstName": "D.", "lastName": "Kassab-Chahmi" } ], "abstractNote": "Breast cancer prognosis and predictive biomarkers development would allow sparing some patients from chemotherapy or identifying patients for whom chemotherapy would be indicated. In this context, in 2009, the French National Cancer Institute, a National Health and Science Agency dedicated to cancer, in collaboration with the A << Soci,t, fran double dagger aise de s,nologie et de pathologie mammaire A >> published a report on the assessment of the prognostic and the predictive clinical validity of tissular biomarkers, uPA/PAI-1, Oncotype DX (TM) and MammaPrint A (R), in breast cancer management. They concluded that only the uPA/PAI-1 prognosis value reached the highest level of evidence (LOE I according to Hayes 1998 classification). In 2012, it was decided to update this report since new data have emerged and because information disparities among clinicians have been identified. This article aims to present the main conclusions together with the levels of evidence associated with those conclusions. The updating process was based on literature published since 2009 appraisal and on multidisciplinary and independent experts' opinion. The levels of evidence (LOE) used are those of the classification defined by Simon in 2009 (updated Hayes 1998 classification): LOE IA and LOE IB: high level of evidence; LOE IIB and LOE IIC: intermediate level of evidence; LOE IIIC and LOE IV-VD: low level of evidence. Among patients without lymph-node involvement, uPA/PAI-1, invasion process biomarkers, reach the highest level of evidence for 10 years recurrence free survival prognosis (LOE IA according to Simon). The predictive value to anthracyclins chemotherapy remains to be confirmed. No data were identified on uPA/PAI-1 medico-economic value. Oncotype DX (TM) and MammaPrintA (R) prognosis and predictive value do not reach the LOE I level. This updating' process confirms the 2009 levels of evidence for all the three biomarkers prognosis value. Besides, concerning Oncotype DX (TM) and MammaPrintA (R), new data do not allow to conclude neither to their complementary clinical information to other clinicopathological existing biomarkers nor to a favorable cost-efficiency ratio in therapeutic decision making and this because of the methodological weakness and uncertainty that are identified in the selected studies. Practically, beyond the prognosis and predictive biomarkers validity, the clinical utility of a new biomarker for chemotherapy indication depends on its clinical added information with regard to validated biomarkers (HR, HER2 and Ki67) and to clinicopathological parameters. Since they are the sole validated biomarkers of the invasion process, uPA/PAI-1 could complete clinical information of other clinicopathological factors and consequently could confer an added clinical value. However, data concerning the impact of this information on chemotherapy clinical indication are lacking.", "publicationTitle": "ONCOLOGIE", "publisher": "", "place": "", "date": "avril 2014", "volume": "16", "issue": "4", "section": "", "partNumber": "", "partTitle": "", "pages": "196-206", "series": "", "seriesTitle": "", "seriesText": "", "journalAbbreviation": "", "DOI": "10.1007/s10269-014-2379-x", "citationKey": "", "url": "", "accessDate": "", "PMID": "", "PMCID": "", "ISSN": "1292-3818", "archive": "", "archiveLocation": "", "shortTitle": "", "language": "French", "libraryCatalog": "", "callNumber": "", "rights": "", "extra": "", "tags": [ { "tag": "Biomarkers" }, { "tag": "Prognosis" }, { "tag": "breast cancer" }, { "tag": "levels of evidence." }, { "tag": "predictive" } ], "collections": [ "37A54ZND" ], "relations": {}, "dateAdded": "2014-10-23T13:12:48Z", "dateModified": "2014-10-23T13:12:48Z" } }, { "key": "8QDXH8DA", "version": 3, "library": { "type": "group", "id": 275404, "name": "CRPG", "links": { "alternate": { "href": "https://www.zotero.org/groups/crpg", "type": "text/html" } } }, "links": { "self": { "href": "https://api.zotero.org/groups/275404/items/8QDXH8DA", "type": "application/json" }, "alternate": { "href": "https://www.zotero.org/groups/crpg/items/8QDXH8DA", "type": "text/html" } }, "meta": { "createdByUser": { "id": 1721057, "username": "pya", "name": "", "links": { "alternate": { "href": "https://www.zotero.org/pya", "type": "text/html" } } }, "creatorSummary": "Kenzari et al.", "parsedDate": "2014", "numChildren": 0 }, "data": { "key": "8QDXH8DA", "version": 3, "itemType": "journalArticle", "title": "Complex metallic alloys as new materials for additive manufacturing", "creators": [ { "creatorType": "author", "firstName": "Samuel", "lastName": "Kenzari" }, { "creatorType": "author", "firstName": "David", "lastName": "Bonina" }, { "creatorType": "author", "firstName": "Jean Marie", "lastName": "Dubois" }, { "creatorType": "author", "firstName": "Vincent", "lastName": "Fournee" } ], "abstractNote": "Additive manufacturing processes allow freeform fabrication of the physical representation of a three-dimensional computer-aided design (CAD) data model. This area has been expanding rapidly over the last 20 years. It includes several techniques such as selective laser sintering and stereolithography. The range of materials used today is quite restricted while there is a real demand for manufacturing lighter functional parts or parts with improved functional properties. In this article, we summarize recent work performed in this field, introducing new composite materials containing complex metallic alloys. These are mainly Al-based quasicrystalline alloys whose properties differ from those of conventional alloys. The use of these materials allows us to produce light-weight parts consisting of either metal-matrix composites or of polymer-matrix composites with improved properties. Functional parts using these alloys are now commercialized.", "publicationTitle": "SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS", "publisher": "", "place": "", "date": "avril 2014", "volume": "15", "issue": "2", "section": "", "partNumber": "", "partTitle": "", "pages": "", "series": "", "seriesTitle": "", "seriesText": "", "journalAbbreviation": "", "DOI": "10.1088/1468-6996/15/2/024802", "citationKey": "", "url": "", "accessDate": "", "PMID": "", "PMCID": "", "ISSN": "1468-6996", "archive": "", "archiveLocation": "", "shortTitle": "", "language": "English", "libraryCatalog": "", "callNumber": "", "rights": "", "extra": "", "tags": [ { "tag": "additive manufacturing" }, { "tag": "composites" }, { "tag": "quasicrystals" }, { "tag": "tribology" } ], "collections": [ "37A54ZND" ], "relations": {}, "dateAdded": "2014-10-23T13:12:48Z", "dateModified": "2014-10-23T13:12:48Z" } }, { "key": "7EBETAFI", "version": 3, "library": { "type": "group", "id": 275404, "name": "CRPG", "links": { "alternate": { "href": "https://www.zotero.org/groups/crpg", "type": "text/html" } } }, "links": { "self": { "href": "https://api.zotero.org/groups/275404/items/7EBETAFI", "type": "application/json" }, "alternate": { "href": "https://www.zotero.org/groups/crpg/items/7EBETAFI", "type": "text/html" } }, "meta": { "createdByUser": { "id": 1721057, "username": "pya", "name": "", "links": { "alternate": { "href": "https://www.zotero.org/pya", "type": "text/html" } } }, "creatorSummary": "Guerbois et al.", "parsedDate": "2014-04-15", "numChildren": 0 }, "data": { "key": "7EBETAFI", "version": 3, "itemType": "journalArticle", "title": "Nitrite Reduction by Biogenic Hydroxycarbonate Green Rusts: Evidence for Hydroxy-nitrite Green Rust Formation as an Intermediate Reaction Product", "creators": [ { "creatorType": "author", "firstName": "Delphine", "lastName": "Guerbois" }, { "creatorType": "author", "firstName": "Georges", "lastName": "Ona-Nguema" }, { "creatorType": "author", "firstName": "Guillaume", "lastName": "Morin" }, { "creatorType": "author", "firstName": "Mustapha", "lastName": "Abdelmoula" }, { "creatorType": "author", "firstName": "Anniet M.", "lastName": "Laverman" }, { "creatorType": "author", "firstName": "Jean-Marie", "lastName": "Mouchel" }, { "creatorType": "author", "firstName": "Kevin", "lastName": "Barthelemy" }, { "creatorType": "author", "firstName": "Fabien", "lastName": "Maillot" }, { "creatorType": "author", "firstName": "Jessica", "lastName": "Brest" } ], "abstractNote": "The present study investigates for the first time the reduction of nitrite by biogenic hydroxycarbonate green rusts, bio-GR(CO3), produced from the bioreduction of ferric oxyhydroxycarbonate (Fohc), a poorly crystalline solid phase, and of lepidocrocite, a well-crystallized Fe(III)-oxyhydroxide mineral. Results show a fast Fe(II) production from Fohc, which leads to the precipitation of bio-GR(CO3) particles that were roughly 2-fold smaller (2.3 +/- 0.4 mu m) than those obtained from the bioreduction of lepidocrocite (5.0 +/- 0.4 mu m). The study reveals that both bio-GR(CO3) are capable of reducing nitrite ions into gaseous nitrogen species such as NO, N2O, or N-2 without ammonium production at neutral initial pH and that nitrite reduction proceeded to a larger extent with smaller particles than with larger ones. On the basis of the identification of intermediates and end-reaction products using X-ray diffraction and X-ray absorption fine structure (XAFS) spectroscopy at the Fe K-edge, our study shows the formation of hydroxy-nitrite green rust, GR(NO2), a new type of green rust 1, and suggests that the reduction of nitrite by biogenic GR(CO3) involves both external and internal reaction sites and that such a mechanism could explain the higher reactivity of green rust with respect to nitrite, compared to other mineral substrates possessing only external reactive sites.", "publicationTitle": "ENVIRONMENTAL SCIENCE & TECHNOLOGY", "publisher": "", "place": "", "date": "APR 15 2014", "volume": "48", "issue": "8", "section": "", "partNumber": "", "partTitle": "", "pages": "4505-4514", "series": "", "seriesTitle": "", "seriesText": "", "journalAbbreviation": "", "DOI": "10.1021/es404009k", "citationKey": "", "url": "", "accessDate": "", "PMID": "", "PMCID": "", "ISSN": "0013-936X", "archive": "", "archiveLocation": "", "shortTitle": "", "language": "English", "libraryCatalog": "", "callNumber": "", "rights": "", "extra": "", "tags": [], "collections": [ "37A54ZND" ], "relations": {}, "dateAdded": "2014-10-23T13:12:48Z", "dateModified": "2014-10-23T13:12:48Z" } }, { "key": "RQ9463RC", "version": 3, "library": { "type": "group", "id": 275404, "name": "CRPG", "links": { "alternate": { "href": "https://www.zotero.org/groups/crpg", "type": "text/html" } } }, "links": { "self": { "href": "https://api.zotero.org/groups/275404/items/RQ9463RC", "type": "application/json" }, "alternate": { "href": "https://www.zotero.org/groups/crpg/items/RQ9463RC", "type": "text/html" } }, "meta": { "createdByUser": { "id": 1721057, "username": "pya", "name": "", "links": { "alternate": { "href": "https://www.zotero.org/pya", "type": "text/html" } } }, "creatorSummary": "Kuga et al.", "parsedDate": "2014-05-01", "numChildren": 0 }, "data": { "key": "RQ9463RC", "version": 3, "itemType": "journalArticle", "title": "Nitrogen isotopic fractionation during abiotic synthesis of organic solid particles", "creators": [ { "creatorType": "author", "firstName": "Maia", "lastName": "Kuga" }, { "creatorType": "author", "firstName": "Nathalie", "lastName": "Carrasco" }, { "creatorType": "author", "firstName": "Bernard", "lastName": "Marty" }, { "creatorType": "author", "firstName": "Yves", "lastName": "Marrocchi" }, { "creatorType": "author", "firstName": "Sylvain", "lastName": "Bernard" }, { "creatorType": "author", "firstName": "Thomas", "lastName": "Rigaudier" }, { "creatorType": "author", "firstName": "Benjamin", "lastName": "Fleury" }, { "creatorType": "author", "firstName": "Laurent", "lastName": "Tissandier" } ], "abstractNote": "The formation of organic compounds is generally assumed to result from abiotic processes in the Solar System, with the exception of biogenic organics on Earth. Nitrogen-bearing organics are of particular interest, notably for prebiotic perspectives but also for overall comprehension of organic formation in the young Solar System and in planetary atmospheres. We have investigated abiotic synthesis of organics upon plasma discharge, with special attention to N isotope fractionation. Organic aerosols were synthesized from N-2-CH4 and N-2-CO gaseous mixtures using low-pressure plasma discharge experiments, aimed at simulating chemistry occurring in Titan's atmosphere and in the protosolar nebula, respectively. The nitrogen content, the N speciation and the N isotopic composition were analyzed in the resulting organic aerosols. Nitrogen is efficiently incorporated into the synthesized solids, independently of the oxidation degree, of the N-2 content of the starting gas mixture, and of the nitrogen speciation in the aerosols. The aerosols are depleted in N-15 by 15-25 parts per thousand relative to the initial N-2 gas, whatever the experimental setup is. Such an isotopic fractionation is attributed to mass-dependent kinetic effect(s). Nitrogen isotope fractionation upon electric discharge cannot account for the large N isotope variations observed among Solar System objects and reservoirs. Extreme N isotope signatures in the Solar System are more likely the result of self-shielding during N-2 photodissociation, exotic effect during photodissociation of N-2 and/or low temperature ion-molecule isotope exchange. Kinetic N isotope fractionation may play a significant role in the Titan's atmosphere. On the Titan's night side, N-15-depletion resulting from electron driven reactions may counterbalance photo-induced N-15 enrichments occurring on the day's side. We also suggest that the low delta N-15 values of Archaean organic matter (Beaumont and Robert, 1999) are partly the result of abiotic synthesis of organics that occurred at that time, and that the subsequent development of the biosphere resulted in shifts of delta N-15 towards higher values. (C) 2014 Elsevier B.V. All rights reserved.", "publicationTitle": "EARTH AND PLANETARY SCIENCE LETTERS", "publisher": "", "place": "", "date": "MAY 1 2014", "volume": "393", "issue": "", "section": "", "partNumber": "", "partTitle": "", "pages": "2-13", "series": "", "seriesTitle": "", "seriesText": "", "journalAbbreviation": "", "DOI": "10.1016/j.epsl.2014.02.037", "citationKey": "", "url": "", "accessDate": "", "PMID": "", "PMCID": "", "ISSN": "0012-821X", "archive": "", "archiveLocation": "", "shortTitle": "", "language": "English", "libraryCatalog": "", "callNumber": "", "rights": "", "extra": "", "tags": [ { "tag": "Early Earth" }, { "tag": "Solar System" }, { "tag": "Titan's atmosphere" }, { "tag": "nitrogen isotopes" }, { "tag": "organics" }, { "tag": "plasma" } ], "collections": [ "37A54ZND" ], "relations": {}, "dateAdded": "2014-10-23T13:12:48Z", "dateModified": "2014-10-23T13:12:48Z" } }, { "key": "XFN9X97U", "version": 3, "library": { "type": "group", "id": 275404, "name": "CRPG", "links": { "alternate": { "href": "https://www.zotero.org/groups/crpg", "type": "text/html" } } }, "links": { "self": { "href": "https://api.zotero.org/groups/275404/items/XFN9X97U", "type": "application/json" }, "alternate": { "href": "https://www.zotero.org/groups/crpg/items/XFN9X97U", "type": "text/html" } }, "meta": { "createdByUser": { "id": 1721057, "username": "pya", "name": "", "links": { "alternate": { "href": "https://www.zotero.org/pya", "type": "text/html" } } }, "creatorSummary": "Mojzsis et al.", "parsedDate": "2014-05-15", "numChildren": 0 }, "data": { "key": "XFN9X97U", "version": 3, "itemType": "journalArticle", "title": "Component geochronology in the polyphase ca. 3920 Ma Acasta Gneiss", "creators": [ { "creatorType": "author", "firstName": "Stephen J.", "lastName": "Mojzsis" }, { "creatorType": "author", "firstName": "Nicole L.", "lastName": "Cates" }, { "creatorType": "author", "firstName": "Guillaume", "lastName": "Caro" }, { "creatorType": "author", "firstName": "Dustin", "lastName": "Trail" }, { "creatorType": "author", "firstName": "Oleg", "lastName": "Abramov" }, { "creatorType": "author", "firstName": "Martin", "lastName": "Guitreau" }, { "creatorType": "author", "firstName": "Janne", "lastName": "Blichert-Toft" }, { "creatorType": "author", "firstName": "Michelle D.", "lastName": "Hopkins" }, { "creatorType": "author", "firstName": "Wouter", "lastName": "Bleeker" } ], "abstractNote": "The oldest compiled U-Pb zircon ages for the Acasta Gneiss Complex in the Northwest Territories of Canada span about 4050-3850 Ma; yet older ca. 4200 Ma xenocrystic U-Pb zircon ages have also been reported for this terrane. The AGC expresses at least 25 km(2) of outcrop exposure, but only a small subset of this has been documented in the detail required to investigate a complex history and resolve disputes over emplacement ages. To better understand this history, we combined new ion microprobe U-235,U-238-Pb-207,Pb-206 zircon geochronology with whole-rock and zircon rare earth element compositions ([REE](zirc)), Ti-in-zircon thermometry (Ti-xln) and Sm-147-Nd-143 geochronology for an individual subdivided similar to 60 cm(2) slab of Acasta banded gneiss comprising five separate lithologic components. Results were compared to other variably deformed granitoid-gneisses and plagioclase-hornblende rocks from elsewhere in the AGC. We show that different gneissic components carry distinct [Th/U](zirc) vs. Ti-xln and [REE](zirc) signatures correlative with different zircon U-Pb age populations and WR compositions, but not with Sm-147-Nd-143 isotope systematics. Modeled D-WR(zircon) [REE] from lattice-strain theory reconciles only the ca. 3920 Ma zircons with the oldest component that also preserves strong positive Eu* anomalies. Magmas which gave rise to the somewhat older (inherited) ca. 4020 Ma AGC zircon age population formed at similar to IW (iron-wustite) to 60%) rather than igneous rocks. This study shows that Li isotopes in the river particulate load are a good proxy for quantifying both the erosional rock sources and the fingerprint of present-day weathering processes. Overall, Li isotopes in river sediments confirm the cannibalistic nature of erosion and weathering. (C) 2014 Elsevier B.V. All rights reserved.", "publicationTitle": "EARTH AND PLANETARY SCIENCE LETTERS", "publisher": "", "place": "", "date": "SEP 1 2014", "volume": "401", "issue": "", "section": "", "partNumber": "", "partTitle": "", "pages": "359-372", "series": "", "seriesTitle": "", "seriesText": "", "journalAbbreviation": "", "DOI": "10.1016/j.epsl.2014.05.061", "citationKey": "", "url": "", "accessDate": "", "PMID": "", "PMCID": "", "ISSN": "0012-821X", "archive": "", "archiveLocation": "", "shortTitle": "", "language": "English", "libraryCatalog": "", "callNumber": "", "rights": "", "extra": "", "tags": [ { "tag": "chemical weathering" }, { "tag": "large rivers" }, { "tag": "lithium isotopes" }, { "tag": "sedimentary recycling" } ], "collections": [ "37A54ZND" ], "relations": {}, "dateAdded": "2014-10-23T13:12:48Z", "dateModified": "2014-10-23T13:12:48Z" } }, { "key": "SVX2R6A6", "version": 3, "library": { "type": "group", "id": 275404, "name": "CRPG", "links": { "alternate": { "href": "https://www.zotero.org/groups/crpg", "type": "text/html" } } }, "links": { "self": { "href": "https://api.zotero.org/groups/275404/items/SVX2R6A6", "type": "application/json" }, "alternate": { "href": "https://www.zotero.org/groups/crpg/items/SVX2R6A6", "type": "text/html" } }, "meta": { "createdByUser": { "id": 1721057, "username": "pya", "name": "", "links": { "alternate": { "href": "https://www.zotero.org/pya", "type": "text/html" } } }, "creatorSummary": "Roskosz et al.", "parsedDate": "2014-09", "numChildren": 0 }, "data": { "key": "SVX2R6A6", "version": 3, "itemType": "journalArticle", "title": "WATER UPTAKE, DIFFUSION AND D/H SIGNATURE OF AMORPHOUS SILICATES DURING HYDRATION/DEHYDRATION AND MAGMA DEGASSING.", "creators": [ { "creatorType": "author", "firstName": "M.", "lastName": "Roskosz" }, { "creatorType": "author", "firstName": "D.", "lastName": "Laporte" }, { "creatorType": "author", "firstName": "E.", "lastName": "Deloule" }, { "creatorType": "author", "firstName": "H.", "lastName": "Leroux" }, { "creatorType": "author", "firstName": "C.", "lastName": "Depecker" }, { "creatorType": "author", "firstName": "L.", "lastName": "Remusat" } ], "abstractNote": "", "publicationTitle": "METEORITICS & PLANETARY SCIENCE", "publisher": "", "place": "", "date": "septembre 2014", "volume": "49", "issue": "1, SI", "section": "", "partNumber": "", "partTitle": "", "pages": "A347", "series": "", "seriesTitle": "", "seriesText": "", "journalAbbreviation": "", "DOI": "", "citationKey": "", "url": "", "accessDate": "", "PMID": "", "PMCID": "", "ISSN": "1086-9379", "archive": "", "archiveLocation": "", "shortTitle": "", "language": "English", "libraryCatalog": "", "callNumber": "", "rights": "", "extra": "77th Annual Meeting of the Meteoritical-Society, Casablanca, MOROCCO, SEP 08-13, 2014", "tags": [], "collections": [ "37A54ZND" ], "relations": {}, "dateAdded": "2014-10-23T13:12:48Z", "dateModified": "2014-10-23T13:12:48Z" } } ]