Tight bounds on missing late veneer in early Archean peridotite from triple oxygen isotopes
| Autor: | Peters S.T.M.[1], Fischer M.B.[1, Pack A.[1], Szilas K.[3], Appel P.W.U.[4], Münker C.[5], Dallai L.[6], Marien C.S.[5] |
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| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Peridotite
Oxygen isotope accretion Archean medicine.medical_treatment Geochemistry Geology Isotopes of oxygen late accretion pre-late veneer early Archean mantle Itsaq Gneiss Complex Fiskefjord CI chondrites CM chondrites mantle peridotite D′17O San Carlos olivine oxygen isotopes highly siderophile elements Ru isotopes deserpentinisation 13. Climate action Geochemistry and Petrology medicine Environmental Chemistry Veneer |
| Zdroj: | Peters, S T M, Fischer, M B, Pack, A, Szilas, K, Appel, P W U, Münker, C, Dallai, L & Marien, C S 2021, ' Tight bounds on missing late veneer in early Archean peridotite from triple oxygen isotopes ', Geochemical Perspectives Letters, vol. 18, pp. 27-31 . https://doi.org/10.7185/geochemlet.2120 Geochemical Perspectives Letters 18 (2021): 27–31. doi:10.7185/geochemlet.2120 info:cnr-pdr/source/autori:Peters S.T.M.[1], Fischer M.B.[1,2], Pack A.[1], Szilas K.[3], Appel P.W.U.[4], Münker C.[5], Dallai L.[6], Marien C.S.[5]/titolo:Tight bounds on missing late veneer in early Archean peridotite from triple oxygen isotopes/doi:10.7185%2Fgeochemlet.2120/rivista:Geochemical Perspectives Letters (Print)/anno:2021/pagina_da:27/pagina_a:31/intervallo_pagine:27–31/volume:18 |
| Popis: | Oxygen isotopes provide a unique possibility to study Earth's late accretion phase from a lithophile element perspective, because most carbonaceous chondrites - meteorites that likely resemble the composition of the terrestrial late veneer - have markedly different delta ' 17O values than the silicate Earth. Ultramafic rocks in the early Archean assemblage of southwest Greenland have not incorporated the full amount of late accreted materials, and therefore possibly record the delta 17O of the mantle before late accretion. We measured 17O/16O and 18O/16O ratios of olivine from these ultramafic rocks and compared them with olivine from post-Archean mantle peridotite. A missing late veneer component was not resolved. The missing component from the early Archean mantle is therefore restricted to |
| Databáze: | OpenAIRE |
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