Coupled 182W-142Nd constraint for early Earth differentiation
International audience Recent high precision (142)Nd isotope measurements showed that global silicate differentiation may have occurred as early as 30-75 Myr after the Solar System formation [Bennett V, et al. (2007) Science 318:1907-1910]. This time scale is almost contemporaneous with Earth's...
Published in: | Proceedings of the National Academy of Sciences |
---|---|
Main Authors: | , , , , , |
Other Authors: | , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
HAL CCSD
2010
|
Subjects: | |
Online Access: | https://hal.science/hal-00515962 https://doi.org/10.1073/pnas.0913605107 |
id |
ftunivstetienne:oai:HAL:hal-00515962v1 |
---|---|
record_format |
openpolar |
spelling |
ftunivstetienne:oai:HAL:hal-00515962v1 2024-09-15T18:09:54+00:00 Coupled 182W-142Nd constraint for early Earth differentiation Moynier, Frédéric Yin, Qing-Zhu Irisawa, Keita Boyet, Maud Jacobsen, Benjamin Rosing, Minik McDonnell Center for Space Sciences Washington University in Saint Louis (WUSTL) Department of Earth and Planetary Sciences St Louis Department of Geology Davis University of California Davis (UC Davis) University of California (UC)-University of California (UC) Department of Earth and Planetary Sciences TITECH Tokyo Tokyo Institute of Technology Tokyo (TITECH) Laboratoire Magmas et Volcans (LMV) Observatoire de Physique du Globe de Clermont-Ferrand (OPGC) Université Blaise Pascal - Clermont-Ferrand 2 (UBP)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Blaise Pascal - Clermont-Ferrand 2 (UBP)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Jean Monnet - Saint-Étienne (UJM)-Centre National de la Recherche Scientifique (CNRS) Nordic Centre of Earth Evolution (NORDCEE) University of Copenhagen = Københavns Universitet (UCPH) 2010 https://hal.science/hal-00515962 https://doi.org/10.1073/pnas.0913605107 en eng HAL CCSD National Academy of Sciences info:eu-repo/semantics/altIdentifier/doi/10.1073/pnas.0913605107 hal-00515962 https://hal.science/hal-00515962 doi:10.1073/pnas.0913605107 PUBMEDCENTRAL: PMC2890712 ISSN: 0027-8424 EISSN: 1091-6490 Proceedings of the National Academy of Sciences of the United States of America https://hal.science/hal-00515962 Proceedings of the National Academy of Sciences of the United States of America, 2010, 107 (24), pp.10810-10814. ⟨10.1073/pnas.0913605107⟩ hafnium tungsten hidden reservoir Hawaï Iceland [SDU.STU.GC]Sciences of the Universe [physics]/Earth Sciences/Geochemistry [SDE.MCG]Environmental Sciences/Global Changes info:eu-repo/semantics/article Journal articles 2010 ftunivstetienne https://doi.org/10.1073/pnas.0913605107 2024-07-09T00:05:34Z International audience Recent high precision (142)Nd isotope measurements showed that global silicate differentiation may have occurred as early as 30-75 Myr after the Solar System formation [Bennett V, et al. (2007) Science 318:1907-1910]. This time scale is almost contemporaneous with Earth's core formation at approximately 30 Myr [Yin Q, et al. (2002) Nature 418:949-952]. The (182)Hf-(182)W system provides a powerful complement to the (142)Nd results for early silicate differentiation, because both core formation and silicate differentiation fractionate Hf from W. Here we show that eleven terrestrial samples from diverse tectonic settings, including five early Archean samples from Isua, Greenland, of which three have been previously shown with (142)Nd anomalies, all have a homogeneous W isotopic composition, which is approximately 2epsilon-unit more radiogenic than the chondritic value. By using a 3-stage model calculation that describes the isotopic evolution in chondritic reservoir and core segregation, as well as silicate differentiation, we show that the W isotopic composition of terrestrial samples provides the most stringent time constraint for early core formation (27.5-38 Myr) followed by early terrestrial silicate differentiation (38-75 Myr) that is consistent with the terrestrial (142)Nd anomalies. Article in Journal/Newspaper Greenland Iceland Université Jean Monnet – Saint-Etienne: HAL Proceedings of the National Academy of Sciences 107 24 10810 10814 |
institution |
Open Polar |
collection |
Université Jean Monnet – Saint-Etienne: HAL |
op_collection_id |
ftunivstetienne |
language |
English |
topic |
hafnium tungsten hidden reservoir Hawaï Iceland [SDU.STU.GC]Sciences of the Universe [physics]/Earth Sciences/Geochemistry [SDE.MCG]Environmental Sciences/Global Changes |
spellingShingle |
hafnium tungsten hidden reservoir Hawaï Iceland [SDU.STU.GC]Sciences of the Universe [physics]/Earth Sciences/Geochemistry [SDE.MCG]Environmental Sciences/Global Changes Moynier, Frédéric Yin, Qing-Zhu Irisawa, Keita Boyet, Maud Jacobsen, Benjamin Rosing, Minik Coupled 182W-142Nd constraint for early Earth differentiation |
topic_facet |
hafnium tungsten hidden reservoir Hawaï Iceland [SDU.STU.GC]Sciences of the Universe [physics]/Earth Sciences/Geochemistry [SDE.MCG]Environmental Sciences/Global Changes |
description |
International audience Recent high precision (142)Nd isotope measurements showed that global silicate differentiation may have occurred as early as 30-75 Myr after the Solar System formation [Bennett V, et al. (2007) Science 318:1907-1910]. This time scale is almost contemporaneous with Earth's core formation at approximately 30 Myr [Yin Q, et al. (2002) Nature 418:949-952]. The (182)Hf-(182)W system provides a powerful complement to the (142)Nd results for early silicate differentiation, because both core formation and silicate differentiation fractionate Hf from W. Here we show that eleven terrestrial samples from diverse tectonic settings, including five early Archean samples from Isua, Greenland, of which three have been previously shown with (142)Nd anomalies, all have a homogeneous W isotopic composition, which is approximately 2epsilon-unit more radiogenic than the chondritic value. By using a 3-stage model calculation that describes the isotopic evolution in chondritic reservoir and core segregation, as well as silicate differentiation, we show that the W isotopic composition of terrestrial samples provides the most stringent time constraint for early core formation (27.5-38 Myr) followed by early terrestrial silicate differentiation (38-75 Myr) that is consistent with the terrestrial (142)Nd anomalies. |
author2 |
McDonnell Center for Space Sciences Washington University in Saint Louis (WUSTL) Department of Earth and Planetary Sciences St Louis Department of Geology Davis University of California Davis (UC Davis) University of California (UC)-University of California (UC) Department of Earth and Planetary Sciences TITECH Tokyo Tokyo Institute of Technology Tokyo (TITECH) Laboratoire Magmas et Volcans (LMV) Observatoire de Physique du Globe de Clermont-Ferrand (OPGC) Université Blaise Pascal - Clermont-Ferrand 2 (UBP)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Blaise Pascal - Clermont-Ferrand 2 (UBP)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Jean Monnet - Saint-Étienne (UJM)-Centre National de la Recherche Scientifique (CNRS) Nordic Centre of Earth Evolution (NORDCEE) University of Copenhagen = Københavns Universitet (UCPH) |
format |
Article in Journal/Newspaper |
author |
Moynier, Frédéric Yin, Qing-Zhu Irisawa, Keita Boyet, Maud Jacobsen, Benjamin Rosing, Minik |
author_facet |
Moynier, Frédéric Yin, Qing-Zhu Irisawa, Keita Boyet, Maud Jacobsen, Benjamin Rosing, Minik |
author_sort |
Moynier, Frédéric |
title |
Coupled 182W-142Nd constraint for early Earth differentiation |
title_short |
Coupled 182W-142Nd constraint for early Earth differentiation |
title_full |
Coupled 182W-142Nd constraint for early Earth differentiation |
title_fullStr |
Coupled 182W-142Nd constraint for early Earth differentiation |
title_full_unstemmed |
Coupled 182W-142Nd constraint for early Earth differentiation |
title_sort |
coupled 182w-142nd constraint for early earth differentiation |
publisher |
HAL CCSD |
publishDate |
2010 |
url |
https://hal.science/hal-00515962 https://doi.org/10.1073/pnas.0913605107 |
genre |
Greenland Iceland |
genre_facet |
Greenland Iceland |
op_source |
ISSN: 0027-8424 EISSN: 1091-6490 Proceedings of the National Academy of Sciences of the United States of America https://hal.science/hal-00515962 Proceedings of the National Academy of Sciences of the United States of America, 2010, 107 (24), pp.10810-10814. ⟨10.1073/pnas.0913605107⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1073/pnas.0913605107 hal-00515962 https://hal.science/hal-00515962 doi:10.1073/pnas.0913605107 PUBMEDCENTRAL: PMC2890712 |
op_doi |
https://doi.org/10.1073/pnas.0913605107 |
container_title |
Proceedings of the National Academy of Sciences |
container_volume |
107 |
container_issue |
24 |
container_start_page |
10810 |
op_container_end_page |
10814 |
_version_ |
1810447509342912512 |