Geochemical constraints on the Hadean environment from mineral fingerprints of prokaryotes

Abstract The environmental conditions on the Earth before 4 billion years ago are highly uncertain, largely because of the lack of a substantial rock record from this period. During this time interval, known as the Hadean, the young planet transformed from an uninhabited world to the one capable of...

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Autores principales:	Alexey A. Novoselov, Dailto Silva, Jerusa Schneider, Ximena Celeste Abrevaya, Michael S. Chaffin, Paloma Serrano, Margareth Sugano Navarro, Maria Josiane Conti, Carlos Roberto de Souza Filho
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/389e8aa024af44deba1bc287f0007ec9
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spelling	oai:doaj.org-article:389e8aa024af44deba1bc287f0007ec92021-12-02T11:53:13ZGeochemical constraints on the Hadean environment from mineral fingerprints of prokaryotes10.1038/s41598-017-04161-22045-2322https://doaj.org/article/389e8aa024af44deba1bc287f0007ec92017-06-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-04161-2https://doaj.org/toc/2045-2322Abstract The environmental conditions on the Earth before 4 billion years ago are highly uncertain, largely because of the lack of a substantial rock record from this period. During this time interval, known as the Hadean, the young planet transformed from an uninhabited world to the one capable of supporting, and inhabited by the first living cells. These cells formed in a fluid environment they could not at first control, with homeostatic mechanisms developing only later. It is therefore possible that present-day organisms retain some record of the primordial fluid in which the first cells formed. Here we present new data on the elemental compositions and mineral fingerprints of both Bacteria and Archaea, using these data to constrain the environment in which life formed. The cradle solution that produced this elemental signature was saturated in barite, sphene, chalcedony, apatite, and clay minerals. The presence of these minerals, as well as other chemical features, suggests that the cradle environment of life may have been a weathering fluid interacting with dry-land silicate rocks. The specific mineral assemblage provides evidence for a moderate Hadean climate with dry and wet seasons and a lower atmospheric abundance of CO2 than is present today.Alexey A. NovoselovDailto SilvaJerusa SchneiderXimena Celeste AbrevayaMichael S. ChaffinPaloma SerranoMargareth Sugano NavarroMaria Josiane ContiCarlos Roberto de Souza FilhoNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-11 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Alexey A. Novoselov Dailto Silva Jerusa Schneider Ximena Celeste Abrevaya Michael S. Chaffin Paloma Serrano Margareth Sugano Navarro Maria Josiane Conti Carlos Roberto de Souza Filho Geochemical constraints on the Hadean environment from mineral fingerprints of prokaryotes
description	Abstract The environmental conditions on the Earth before 4 billion years ago are highly uncertain, largely because of the lack of a substantial rock record from this period. During this time interval, known as the Hadean, the young planet transformed from an uninhabited world to the one capable of supporting, and inhabited by the first living cells. These cells formed in a fluid environment they could not at first control, with homeostatic mechanisms developing only later. It is therefore possible that present-day organisms retain some record of the primordial fluid in which the first cells formed. Here we present new data on the elemental compositions and mineral fingerprints of both Bacteria and Archaea, using these data to constrain the environment in which life formed. The cradle solution that produced this elemental signature was saturated in barite, sphene, chalcedony, apatite, and clay minerals. The presence of these minerals, as well as other chemical features, suggests that the cradle environment of life may have been a weathering fluid interacting with dry-land silicate rocks. The specific mineral assemblage provides evidence for a moderate Hadean climate with dry and wet seasons and a lower atmospheric abundance of CO2 than is present today.
format	article
author	Alexey A. Novoselov Dailto Silva Jerusa Schneider Ximena Celeste Abrevaya Michael S. Chaffin Paloma Serrano Margareth Sugano Navarro Maria Josiane Conti Carlos Roberto de Souza Filho
author_facet	Alexey A. Novoselov Dailto Silva Jerusa Schneider Ximena Celeste Abrevaya Michael S. Chaffin Paloma Serrano Margareth Sugano Navarro Maria Josiane Conti Carlos Roberto de Souza Filho
author_sort	Alexey A. Novoselov
title	Geochemical constraints on the Hadean environment from mineral fingerprints of prokaryotes
title_short	Geochemical constraints on the Hadean environment from mineral fingerprints of prokaryotes
title_full	Geochemical constraints on the Hadean environment from mineral fingerprints of prokaryotes
title_fullStr	Geochemical constraints on the Hadean environment from mineral fingerprints of prokaryotes
title_full_unstemmed	Geochemical constraints on the Hadean environment from mineral fingerprints of prokaryotes
title_sort	geochemical constraints on the hadean environment from mineral fingerprints of prokaryotes
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/389e8aa024af44deba1bc287f0007ec9
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Geochemical constraints on the Hadean environment from mineral fingerprints of prokaryotes

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