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  • 2015-2019  (5)
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  • 1
    Online Resource
    Online Resource
    Crust-mantle interactions and granitoid diversification : insights from Archaean cratons (2017)
    London : The Geological Society
    Details Availability
    Keywords: Geology, Stratigraphic Archaean ; Cratons ; Plate tectonics ; Planets ; Mantles ; Planets ; Crust ; Archaean Geologic Period ; Cratons ; Geology, Stratigraphic ; Plate tectonics ; Earth (Planet) ; Earth (Planet) Crust ; Earth (Planet) Mantle ; Electronic book ; Archaikum ; Plattentektonik ; Erdkruste ; Erdmantel ; Granit ; Granitoid ; Geochemie
    Description / Table of Contents: Archaean granitoids: an overview and significance from a tectonic perspective -- Hafnium isotope constraints on the origin of Mesoarchaean andesites in southern West Greenland, North Atlantic Craton -- The tectonomagmatic significance of Neoarchaean variably alkali-enriched gabbro and diorite intrusions of the western Karelia Province -- Alkaline-rich quartz syenite intrusions of the Western Karelia subprovince -- Geochronology of Neoarchaean granitoids of the NW eastern Dharwar craton: implications for crust formation -- The diversification of granitoids and plate tectonic implications at the Archaean-Proterozoic boundary in the Bundelkhand Craton, Central India -- Petrogenesis of mafic magmatic enclaves of the Bundelkhand granitoids near Orchha, Central Indian shield: evidence for rapid crystallization -- The long (3.7-2.1 Ga) and multistage evolution of the Bug Granulite-Gneiss Complex, Ukrainian Shield, based on the SIMS U-Pb ages and geochemistry of zircons from a single sample -- Geochemical characterization and petrogenesis of mafic granulites from the Central Indian Tectonic Zone (CITZ) -- Metamorphic evolution of the Ilomantsi greenstone belt in the Archaean Karelia Province, eastern Finland.
    Type of Medium: Online Resource
    Pages: 1 Online-Ressource (vii, 256 Seiten) , Illustrationen, Karten
    ISBN: 9781786202949 , 1786202948
    Series Statement: Geological Society special publication no. 449
    URL: http://sp.lyellcollection.org/content/449/1
    URL: http://geoscienceworld.org/content/crust-mantle-interactions-and-granitoid-diversification
    URL: http://proxy.library.carleton.ca/login?url=http://sp.lyellcollection.org/content/449/1
    URL: https://geoscienceworld.org/books/book/2031
    URL: http://VH7QX3XE2P.search.serialssolutions.com/?V=1.0&L=VH7QX3XE2P&S=JCs&C=TC0001866879&T=marc&tab=BOOKS
    URL: https://ezproxy.aub.edu.lb/login?url=https://geoscienceworld.org/books/book/2031
    URL: https://sp.lyellcollection.org/content/449/1
    URL: https://doi.org/10.1144/SP449
    DOI: 10.1144/SP449
    DDC: 552/.3
    RVK:
    TK 1300
    Language: English
    Note: Includes bibliographical references and index
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  • 2
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    Hydrothermal cleft monazite SIMS Th-Pb age data, central Alps (2019)
    PANGAEA
    In:  Supplement to: Bergemann, Christian A; Gnos, Edwin; Berger, Alfons; Janots, Emilie; Whitehouse, Martin J (2020): Dating tectonic activity in the Lepontine Dome and Rhone-Simplon Fault regions through hydrothermal monazite-(Ce). Solid Earth, 11(1), 199-222, https://doi.org/10.5194/se-11-199-2020
    Details
    Publication Date: 2023-02-25
    Description: Ion probe (SIMS) Th-Pb age measurements of hydrothermal fissure/cleft monazite from the central Alps. The sample area encompasses most of the Lepontine metamorphic dome, the eastern Rhone-Simplon Line, southern Gotthard Nappe and the Forcola Fault. The ages directly date deformation during part of the exhumation and cooling history of the Lepontine dome and deformation along the Rhone-Simplon fault zone. The ages of all crystals range from ca. 19 to 5 Ma, with age distribution and internal crystal structure facilitating to distinguish between areas whose deformational history was dominated by distinct tectonic events or continuous exhumation.
    Keywords: Age, error; Age, Lead-Thorium; Age, mineral; Alpe Devero, Val Antigorio; BETT11; Bettelbach, Niederwald, Goms; BLAS1; Cava Maddalena, Beura; Crino Baceno; Doru, Gantertal, Simplon; DURO1; DURO2; DUTH2; DUTH3; DUTH6; Error, absolute; Error, relative; Event label; GRAESER1; GRAESER3; Griessgletscher; Grosses Arsch, Blinnental; KLEM1; KLEM2; KLEM3; Laercheltini, Binntal; Lago Retica, Lagi di Campo Blenio; Lago Sucro, Val Cadlimo; Lead; Lead-204/Lead-208, error, relative; Lead-204/Lead-208 ratio; Lead-208/Thorium-232, error, relative; Lead-208/Thorium-232 ratio; LUCO1; Lucomagno; Montecrstese; MULT; Multiple investigations; Original value; Parameter; Piz, Scai; Piz Blas, Val Nalps, Sedrun; Pizzo Ruescada, Valle di Prato (Lavizzara); Pizzo Tambo, Spluegen; Ratio; SALZ2; Sample code/label; Sample code/label 2; SCHIESS1; Schiessbach/Simplon; Secondary ion mass spectrometry (SIMS); TAMB1; Thorium; Thorium/Uranium ratio; Uranium; VALS; Vals, Valsertal; VANI4; VANI5; VANI6; Wannigletscher, Cherbadung, Binntal
    Type: Dataset
    Format: text/tab-separated-values, 8550 data points
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    DATA PANGAEA
  • 3
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    Secondary ion mass spectrometry (SIMS) Uranium-Lead analyses of shock-recrystallised zircon from the Lappajärvi impact crater, Finland (2019)
    PANGAEA
    In:  Supplement to: Kenny, Gavin; Schmieder, Martin; Whitehouse, Martin J; Nemchin, Alexander A; Morales, Luiz F G; Buchner, Elmar; Bellucci, Jeremy J; Snape, Joshua F (2019): A new U-Pb age for shock-recrystallised zircon from the Lappajärvi impact crater, Finland, and implications for the accurate dating of impact events. Geochimica et Cosmochimica Acta, 245, 479-494, https://doi.org/10.1016/j.gca.2018.11.021
    Details
    Publication Date: 2023-01-13
    Description: U-Pb data for shock-recrystallised zircon from the Lappajärvi impact crater, Finland.
    Keywords: Age, 206Pb/238U Lead-Uranium; Age, 207Pb/206Pb Lead-Lead; Age, 207Pb/235U Lead-Uranium; Age, error, relative; Age, mineral; Comment; Common 206Pb in total 206Pb; Correlation coefficient, isotope ratio error; Discordance; EBSD; Event label; Finland; Identification; impact cratering; Karnaite impact melt rock, Lappajarvi; Lappajarvi; Lead; Lead-206/Lead-204 ratio; Lead-206/Uranium-238, error, relative; Lead-206/Uranium-238 ratio; Lead-207/Lead-206, error, relative; Lead-207/Lead-206 ratio; Lead-207/Uranium-235, error, relative; Lead-207/Uranium-235 ratio; n5747; ROCK; Rock sample; Sample ID; Secondary ion mass spectrometry (SIMS); shock metamorphism; shock-recrystallised zircon; SIMS; Size; Texture; Thorium; Thorium/Uranium ratio; U-Pb; Uranium
    Type: Dataset
    Format: text/tab-separated-values, 814 data points
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    DATA PANGAEA
  • 4
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    Volatile cycling of H2O, CO2, F, and Cl in the HIMU mantle : a new window provided by melt inclusions from oceanic hot spot lavas at Mangaia, Cook Islands (2015)
    John Wiley & Sons
    Details
    Publication Date: 2022-05-25
    Description: Author Posting. © American Geophysical Union, 2014. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Geochemistry, Geophysics, Geosystems 15 (2014): 4445–4467, doi:10.1002/2014GC005473.
    Description: Mangaia hosts the most radiogenic Pb-isotopic compositions observed in ocean island basalts and represents the HIMU (high µ = 238U/204Pb) mantle end-member, thought to result from recycled oceanic crust. Complete geochemical characterization of the HIMU mantle end-member has been inhibited due to a lack of deep submarine glass samples from HIMU localities. We homogenized olivine-hosted melt inclusions separated from Mangaia lavas and the resulting glassy inclusions made possible the first volatile abundances to be obtained from the HIMU mantle end-member. We also report major and trace element abundances and Pb-isotopic ratios on the inclusions, which have HIMU isotopic fingerprints. We evaluate the samples for processes that could modify the volatile and trace element abundances postmantle melting, including diffusive Fe and H2O loss, degassing, and assimilation. H2O/Ce ratios vary from 119 to 245 in the most pristine Mangaia inclusions; excluding an inclusion that shows evidence for assimilation, the primary magmatic H2O/Ce ratios vary up to ∼200, and are consistent with significant dehydration of oceanic crust during subduction and long-term storage in the mantle. CO2 concentrations range up to 2346 ppm CO2 in the inclusions. Relatively high CO2 in the inclusions, combined with previous observations of carbonate blebs in other Mangaia melt inclusions, highlight the importance of CO2 for the generation of the HIMU mantle. F/Nd ratios in the inclusions (30 ± 9; 2σ standard deviation) are higher than the canonical ratio observed in oceanic lavas, and Cl/K ratios (0.079 ± 0.028) fall in the range of pristine mantle (0.02–0.08).
    Description: M.J. acknowledges NSF grants EAR-1145202, EAR-1348082, EAR-1347377, and OCE-1153894 that supported this work. E.F.R.-K. thanks the European Synthesys FP7 “Capacities” Specific Program for financing part of the analytical cost of this research. K.T.K. acknowledges French ANR grant ANR-09-BLAN-038 (project SlabFlux) that supported this work. The Nordsim facility is funded and operated as a joint Nordic research infrastructure under an agreement with NOS-N.
    Description: 2015-05-28
    Keywords: Volatiles ; Mantle geochemistry ; Melt inclusions ; HIMU ; Cook Islands ; Mangaia ; Hot spot
    Repository Name: Woods Hole Open Access Server
    Type: Article
    Format: application/pdf
    Format: application/vnd.ms-excel
    Format: application/msword
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    PAPER (OA)
  • 5
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    Low-δ18O zircon xenocrysts in alkaline basalts; a window into the complex carbonatite-metasomatic history of the Zealandia lithospheric mantle (2019)
    Elsevier
    In:  Geochimica et Cosmochimica Acta, 254 . pp. 21-39.
    Details
    Publication Date: 2022-01-31
    Description: Megacrystic zircon grains from alkaline basaltic fields are rare but can provide fundamental insights into mantle metasomatic processes. Here, we report in-situ U-Pb ages, trace element concentrations and hafnium and oxygen isotopes for fourteen zircon megacrysts from two intraplate alkaline basalt locations in New Zealand. U-Pb ages indicate the zircons crystallised between 12.1 and 19.8 Ma. Zircon oxygen isotopic compositions range from low to mantle-like compositions (grain average δ18O = 3.8–5.1‰). Hafnium isotopes (εHf(t) = +3.3 to +10.4) mostly overlap with intraplate mafic rocks and clinopyroxene in metasomatized peridotitic mantle xenoliths but show no correlation with most trace element parameters or oxygen isotopes. The zircons are interpreted to have formed by the reaction between low-degree melts derived from pre-existing mantle metasomes and the depleted mantle lithosphere prior to eruption and transport to the surface. The low Hf concentration, an absence of Eu anomalies, and elevated U/Yb compared to Nb/Yb in the megacrystic zircons are interpreted to show that the source metasomes comprised subduction- and carbonatite-metasomatised lithospheric mantle. As these trace element characteristics are common for megacrystic zircon in intra-plate basaltic fields globally, they suggest the prevalence of subduction- and carbonatite-metsasomatised mantle under these intraplate volcanic regions. The unusually low δ18O was likely present prior to metasomatic enrichment and may have resulted from high-temperature hydrothermal alteration during initial mantle lithosphere formation at a mid ocean ridge or, possibly, during subduction-related processes associated with continent formation. The combination of proportionally varied contributions from carbonatite- and subduction-metasomatised lithospheric melts with asthenospheric melts may explain the variety of primitive intraplate basalt compositions, including low δ18O reported for some local intraplate lavas.
    Type: Article , PeerReviewed
    Format: text
    DOI: 10.1016/j.gca.2019.03.029
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    OceanRep: Article in a Scientific Journal - peer-reviewed
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