The nature of Earth’s first crust
International audience Recycling of crust into the mantle has left only small remnants at Earth’s surface of crust produced within a billion years of Earth formation. Few, if any, of these ancient crustal rocks represent the first crust that existed on Earth. Understanding the nature of the source m...
Published in: | Chemical Geology |
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Main Authors: | , , , , |
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Format: | Article in Journal/Newspaper |
Language: | English |
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HAL CCSD
2019
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Online Access: | https://uca.hal.science/hal-02344389 https://uca.hal.science/hal-02344389/document https://uca.hal.science/hal-02344389/file/Carlson%20et%20al_ChemGeol_2019_Post-print.pdf https://doi.org/10.1016/j.chemgeo.2019.119321 |
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Open Polar |
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HAL Clermont Auvergne (Université Blaise Pascal Clermont-Ferrand/Université d'Auvergne) |
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ftclermontuniv |
language |
English |
topic |
Earth's first crust short-lived isotopes crust-mantle differentiation planet formation Archean geology [SDU.STU.GC]Sciences of the Universe [physics]/Earth Sciences/Geochemistry |
spellingShingle |
Earth's first crust short-lived isotopes crust-mantle differentiation planet formation Archean geology [SDU.STU.GC]Sciences of the Universe [physics]/Earth Sciences/Geochemistry Carlson, Richard Garçon, Marion O’neil, Jonathan Reimink, Jesse Rizo, Hanika The nature of Earth’s first crust |
topic_facet |
Earth's first crust short-lived isotopes crust-mantle differentiation planet formation Archean geology [SDU.STU.GC]Sciences of the Universe [physics]/Earth Sciences/Geochemistry |
description |
International audience Recycling of crust into the mantle has left only small remnants at Earth’s surface of crust produced within a billion years of Earth formation. Few, if any, of these ancient crustal rocks represent the first crust that existed on Earth. Understanding the nature of the source materials of these ancient rocks and the mechanism of their formation has been the target of decades of geological and geochemical study. This traditional approach has been expanded recently through the ability to simultaneously obtain U-Pb age and initial Hf isotope data for zircons from many of these ancient, generally polymetamorphic, rocks. The addition of information from the short-lived radiometric systems 146Sm-142Nd and 182Hf-182W allows resolution of some of the ambiguities that have clouded the conclusions derived from the long-lived systems. The most apparent of these is clear documentation that Earth experienced major chemical differentiation events within the first tens to hundreds of millions of years of its formation, and that Earth’s most ancient crustal rocks were derived from these differentiated sources, not from primitive undifferentiated mantle. Eoarchean rocks from the North Atlantic Craton and the Anshan Complex of the North China Craton have sources in an incompatible-element-depleted mantle that dates to 4.4-4.5 Ga. Hadean/Eoarchean rocks from two localities in Canada show the importance of remelting of Hadean mafic crust to produce Eoarchean felsic crust. The mafic supracrustal rocks of the Nuvvuagittuq Greenstone Belt are a possible example of the Hadean mafic basement that is often called upon to serve as the source for the high-silica rocks that define continental crust. Many, but not all, ancient terranes show a shift in the nature of the sources for crustal rocks, and possibly the physical mechanism of crust production, between 3.0-3.6 Ga. This transition may reflect the initiation of modern plate tectonics. Eoarchean/Hadean rocks from some terranes, however, also display compositional ... |
author2 |
Department of Terrestrial Magnetism Carnegie Institution Carnegie Institution for Science Laboratoire Magmas et Volcans (LMV) Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Jean Monnet - Saint-Étienne (UJM)-Université Clermont Auvergne 2017-2020 (UCA 2017-2020 )-Centre National de la Recherche Scientifique (CNRS)-Observatoire de Physique du Globe de Clermont-Ferrand (OPGC) Institut national des sciences de l'Univers (INSU - CNRS)-Université Clermont Auvergne 2017-2020 (UCA 2017-2020 )-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Clermont Auvergne 2017-2020 (UCA 2017-2020 )-Centre National de la Recherche Scientifique (CNRS) University of Ottawa Ottawa Department of Geosciences PennState College of Earth and Mineral Sciences Pennsylvania State University (Penn State) Penn State System-Penn State System-Pennsylvania State University (Penn State) Penn State System-Penn State System |
format |
Article in Journal/Newspaper |
author |
Carlson, Richard Garçon, Marion O’neil, Jonathan Reimink, Jesse Rizo, Hanika |
author_facet |
Carlson, Richard Garçon, Marion O’neil, Jonathan Reimink, Jesse Rizo, Hanika |
author_sort |
Carlson, Richard |
title |
The nature of Earth’s first crust |
title_short |
The nature of Earth’s first crust |
title_full |
The nature of Earth’s first crust |
title_fullStr |
The nature of Earth’s first crust |
title_full_unstemmed |
The nature of Earth’s first crust |
title_sort |
nature of earth’s first crust |
publisher |
HAL CCSD |
publishDate |
2019 |
url |
https://uca.hal.science/hal-02344389 https://uca.hal.science/hal-02344389/document https://uca.hal.science/hal-02344389/file/Carlson%20et%20al_ChemGeol_2019_Post-print.pdf https://doi.org/10.1016/j.chemgeo.2019.119321 |
geographic |
Canada |
geographic_facet |
Canada |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
ISSN: 0009-2541 Chemical Geology https://uca.hal.science/hal-02344389 Chemical Geology, 2019, 530, pp.119321. ⟨10.1016/j.chemgeo.2019.119321⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.chemgeo.2019.119321 hal-02344389 https://uca.hal.science/hal-02344389 https://uca.hal.science/hal-02344389/document https://uca.hal.science/hal-02344389/file/Carlson%20et%20al_ChemGeol_2019_Post-print.pdf doi:10.1016/j.chemgeo.2019.119321 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1016/j.chemgeo.2019.119321 |
container_title |
Chemical Geology |
container_volume |
530 |
container_start_page |
119321 |
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1802647912557051904 |
spelling |
ftclermontuniv:oai:HAL:hal-02344389v1 2024-06-23T07:55:21+00:00 The nature of Earth’s first crust Carlson, Richard Garçon, Marion O’neil, Jonathan Reimink, Jesse Rizo, Hanika Department of Terrestrial Magnetism Carnegie Institution Carnegie Institution for Science Laboratoire Magmas et Volcans (LMV) Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Jean Monnet - Saint-Étienne (UJM)-Université Clermont Auvergne 2017-2020 (UCA 2017-2020 )-Centre National de la Recherche Scientifique (CNRS)-Observatoire de Physique du Globe de Clermont-Ferrand (OPGC) Institut national des sciences de l'Univers (INSU - CNRS)-Université Clermont Auvergne 2017-2020 (UCA 2017-2020 )-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Clermont Auvergne 2017-2020 (UCA 2017-2020 )-Centre National de la Recherche Scientifique (CNRS) University of Ottawa Ottawa Department of Geosciences PennState College of Earth and Mineral Sciences Pennsylvania State University (Penn State) Penn State System-Penn State System-Pennsylvania State University (Penn State) Penn State System-Penn State System 2019-12-30 https://uca.hal.science/hal-02344389 https://uca.hal.science/hal-02344389/document https://uca.hal.science/hal-02344389/file/Carlson%20et%20al_ChemGeol_2019_Post-print.pdf https://doi.org/10.1016/j.chemgeo.2019.119321 en eng HAL CCSD Elsevier info:eu-repo/semantics/altIdentifier/doi/10.1016/j.chemgeo.2019.119321 hal-02344389 https://uca.hal.science/hal-02344389 https://uca.hal.science/hal-02344389/document https://uca.hal.science/hal-02344389/file/Carlson%20et%20al_ChemGeol_2019_Post-print.pdf doi:10.1016/j.chemgeo.2019.119321 info:eu-repo/semantics/OpenAccess ISSN: 0009-2541 Chemical Geology https://uca.hal.science/hal-02344389 Chemical Geology, 2019, 530, pp.119321. ⟨10.1016/j.chemgeo.2019.119321⟩ Earth's first crust short-lived isotopes crust-mantle differentiation planet formation Archean geology [SDU.STU.GC]Sciences of the Universe [physics]/Earth Sciences/Geochemistry info:eu-repo/semantics/article Journal articles 2019 ftclermontuniv https://doi.org/10.1016/j.chemgeo.2019.119321 2024-06-11T00:01:32Z International audience Recycling of crust into the mantle has left only small remnants at Earth’s surface of crust produced within a billion years of Earth formation. Few, if any, of these ancient crustal rocks represent the first crust that existed on Earth. Understanding the nature of the source materials of these ancient rocks and the mechanism of their formation has been the target of decades of geological and geochemical study. This traditional approach has been expanded recently through the ability to simultaneously obtain U-Pb age and initial Hf isotope data for zircons from many of these ancient, generally polymetamorphic, rocks. The addition of information from the short-lived radiometric systems 146Sm-142Nd and 182Hf-182W allows resolution of some of the ambiguities that have clouded the conclusions derived from the long-lived systems. The most apparent of these is clear documentation that Earth experienced major chemical differentiation events within the first tens to hundreds of millions of years of its formation, and that Earth’s most ancient crustal rocks were derived from these differentiated sources, not from primitive undifferentiated mantle. Eoarchean rocks from the North Atlantic Craton and the Anshan Complex of the North China Craton have sources in an incompatible-element-depleted mantle that dates to 4.4-4.5 Ga. Hadean/Eoarchean rocks from two localities in Canada show the importance of remelting of Hadean mafic crust to produce Eoarchean felsic crust. The mafic supracrustal rocks of the Nuvvuagittuq Greenstone Belt are a possible example of the Hadean mafic basement that is often called upon to serve as the source for the high-silica rocks that define continental crust. Many, but not all, ancient terranes show a shift in the nature of the sources for crustal rocks, and possibly the physical mechanism of crust production, between 3.0-3.6 Ga. This transition may reflect the initiation of modern plate tectonics. Eoarchean/Hadean rocks from some terranes, however, also display compositional ... Article in Journal/Newspaper North Atlantic HAL Clermont Auvergne (Université Blaise Pascal Clermont-Ferrand/Université d'Auvergne) Canada Chemical Geology 530 119321 |