No evidence for high-pressure melting of Earth’s crust in the Archean

Some of Earth’s earliest continental crust has been previously inferred to have formed from partial melting of hydrated mafic crust at pressures above 1.5 GPa (more than 50 km deep), pressures typically not reached in post-Archean continental crust. Here, the authors show that such high pressure sig...

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Autores principales:	Robert H. Smithies, Yongjun Lu, Tim E. Johnson, Christopher L. Kirkland, Kevin F. Cassidy, David C. Champion, David R. Mole, Ivan Zibra, Klaus Gessner, Jyotindra Sapkota, Matthew C. De Paoli, Marc Poujol
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2019
Materias:	Science Q
Acceso en línea:	https://doaj.org/article/7ec8b46796a14bc88ba5c9941ac2f6c4
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spelling	oai:doaj.org-article:7ec8b46796a14bc88ba5c9941ac2f6c42021-12-02T16:50:58ZNo evidence for high-pressure melting of Earth’s crust in the Archean10.1038/s41467-019-13547-x2041-1723https://doaj.org/article/7ec8b46796a14bc88ba5c9941ac2f6c42019-12-01T00:00:00Zhttps://doi.org/10.1038/s41467-019-13547-xhttps://doaj.org/toc/2041-1723Some of Earth’s earliest continental crust has been previously inferred to have formed from partial melting of hydrated mafic crust at pressures above 1.5 GPa (more than 50 km deep), pressures typically not reached in post-Archean continental crust. Here, the authors show that such high pressure signatures can result from melting of mantle sources rather than melting of crust, and they suggest there is a lack of evidence that Earth’s earliest crust melted at depths significantly below 40 km.Robert H. SmithiesYongjun LuTim E. JohnsonChristopher L. KirklandKevin F. CassidyDavid C. ChampionDavid R. MoleIvan ZibraKlaus GessnerJyotindra SapkotaMatthew C. De PaoliMarc PoujolNature PortfolioarticleScienceQENNature Communications, Vol 10, Iss 1, Pp 1-12 (2019)
institution	DOAJ
collection	DOAJ
language	EN
topic	Science Q
spellingShingle	Science Q Robert H. Smithies Yongjun Lu Tim E. Johnson Christopher L. Kirkland Kevin F. Cassidy David C. Champion David R. Mole Ivan Zibra Klaus Gessner Jyotindra Sapkota Matthew C. De Paoli Marc Poujol No evidence for high-pressure melting of Earth’s crust in the Archean
description	Some of Earth’s earliest continental crust has been previously inferred to have formed from partial melting of hydrated mafic crust at pressures above 1.5 GPa (more than 50 km deep), pressures typically not reached in post-Archean continental crust. Here, the authors show that such high pressure signatures can result from melting of mantle sources rather than melting of crust, and they suggest there is a lack of evidence that Earth’s earliest crust melted at depths significantly below 40 km.
format	article
author	Robert H. Smithies Yongjun Lu Tim E. Johnson Christopher L. Kirkland Kevin F. Cassidy David C. Champion David R. Mole Ivan Zibra Klaus Gessner Jyotindra Sapkota Matthew C. De Paoli Marc Poujol
author_facet	Robert H. Smithies Yongjun Lu Tim E. Johnson Christopher L. Kirkland Kevin F. Cassidy David C. Champion David R. Mole Ivan Zibra Klaus Gessner Jyotindra Sapkota Matthew C. De Paoli Marc Poujol
author_sort	Robert H. Smithies
title	No evidence for high-pressure melting of Earth’s crust in the Archean
title_short	No evidence for high-pressure melting of Earth’s crust in the Archean
title_full	No evidence for high-pressure melting of Earth’s crust in the Archean
title_fullStr	No evidence for high-pressure melting of Earth’s crust in the Archean
title_full_unstemmed	No evidence for high-pressure melting of Earth’s crust in the Archean
title_sort	no evidence for high-pressure melting of earth’s crust in the archean
publisher	Nature Portfolio
publishDate	2019
url	https://doaj.org/article/7ec8b46796a14bc88ba5c9941ac2f6c4
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No evidence for high-pressure melting of Earth’s crust in the Archean

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