The role of volcanic-derived clays in the preservation of Ediacaran biota from the Itajaí Basin (ca. 563 Ma, Brazil)

Abstract The early evolution of metazoans has been reconstructed by studies on exceptionally preserved molds in siliciclastic rocks from the Ediacaran Period. However, there remains considerable controversy regarding the formation mechanisms of this unusual ‘Ediacaran-style’ preservation. Proposed h...

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Autores principales:	Bruno Becker-Kerber, Abderrazak El Albani, Kurt Konhauser, Ahmed Abd Elmola, Claude Fontaine, Paulo S. G. Paim, Arnaud Mazurier, Gustavo M. E. M. Prado, Douglas Galante, Pedro B. Kerber, Ana L. Z. da Rosa, Thomas R. Fairchild, Alain Meunier, Mírian L. A. F. Pacheco
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/e03db0eb54734b60acf6ce9b41cebb31
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spelling	oai:doaj.org-article:e03db0eb54734b60acf6ce9b41cebb312021-12-02T13:34:32ZThe role of volcanic-derived clays in the preservation of Ediacaran biota from the Itajaí Basin (ca. 563 Ma, Brazil)10.1038/s41598-021-84433-02045-2322https://doaj.org/article/e03db0eb54734b60acf6ce9b41cebb312021-03-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-84433-0https://doaj.org/toc/2045-2322Abstract The early evolution of metazoans has been reconstructed by studies on exceptionally preserved molds in siliciclastic rocks from the Ediacaran Period. However, there remains considerable controversy regarding the formation mechanisms of this unusual ‘Ediacaran-style’ preservation. Proposed hypotheses usually include early authigenesis of minerals, but evidence for this is scarce. In a recently discovered deposit of Ediacaran biota in Brazil, we show that the classic moldic preservation is related to clay mineral authigenesis. Specifically, these clays originated from the alteration of original pyroclastic sediments, likely enhanced by microbial activity, leading to early illitization and morphological templating of the fossiliferous surfaces at a micrometric scale. Such high-fidelity preservation was made possible by rapid burial during volcanic events and the in-situ templating of tissue by clays via microbially-mediated mineralization. This newly described Lagerstätte demonstrates that a number of minerals can facilitate preservation, and that perhaps ‘Ediacaran-style’ preservation result from different processes leading to the same broad style of preservation.Bruno Becker-KerberAbderrazak El AlbaniKurt KonhauserAhmed Abd ElmolaClaude FontainePaulo S. G. PaimArnaud MazurierGustavo M. E. M. PradoDouglas GalantePedro B. KerberAna L. Z. da RosaThomas R. FairchildAlain MeunierMírian L. A. F. PachecoNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-10 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Bruno Becker-Kerber Abderrazak El Albani Kurt Konhauser Ahmed Abd Elmola Claude Fontaine Paulo S. G. Paim Arnaud Mazurier Gustavo M. E. M. Prado Douglas Galante Pedro B. Kerber Ana L. Z. da Rosa Thomas R. Fairchild Alain Meunier Mírian L. A. F. Pacheco The role of volcanic-derived clays in the preservation of Ediacaran biota from the Itajaí Basin (ca. 563 Ma, Brazil)
description	Abstract The early evolution of metazoans has been reconstructed by studies on exceptionally preserved molds in siliciclastic rocks from the Ediacaran Period. However, there remains considerable controversy regarding the formation mechanisms of this unusual ‘Ediacaran-style’ preservation. Proposed hypotheses usually include early authigenesis of minerals, but evidence for this is scarce. In a recently discovered deposit of Ediacaran biota in Brazil, we show that the classic moldic preservation is related to clay mineral authigenesis. Specifically, these clays originated from the alteration of original pyroclastic sediments, likely enhanced by microbial activity, leading to early illitization and morphological templating of the fossiliferous surfaces at a micrometric scale. Such high-fidelity preservation was made possible by rapid burial during volcanic events and the in-situ templating of tissue by clays via microbially-mediated mineralization. This newly described Lagerstätte demonstrates that a number of minerals can facilitate preservation, and that perhaps ‘Ediacaran-style’ preservation result from different processes leading to the same broad style of preservation.
format	article
author	Bruno Becker-Kerber Abderrazak El Albani Kurt Konhauser Ahmed Abd Elmola Claude Fontaine Paulo S. G. Paim Arnaud Mazurier Gustavo M. E. M. Prado Douglas Galante Pedro B. Kerber Ana L. Z. da Rosa Thomas R. Fairchild Alain Meunier Mírian L. A. F. Pacheco
author_facet	Bruno Becker-Kerber Abderrazak El Albani Kurt Konhauser Ahmed Abd Elmola Claude Fontaine Paulo S. G. Paim Arnaud Mazurier Gustavo M. E. M. Prado Douglas Galante Pedro B. Kerber Ana L. Z. da Rosa Thomas R. Fairchild Alain Meunier Mírian L. A. F. Pacheco
author_sort	Bruno Becker-Kerber
title	The role of volcanic-derived clays in the preservation of Ediacaran biota from the Itajaí Basin (ca. 563 Ma, Brazil)
title_short	The role of volcanic-derived clays in the preservation of Ediacaran biota from the Itajaí Basin (ca. 563 Ma, Brazil)
title_full	The role of volcanic-derived clays in the preservation of Ediacaran biota from the Itajaí Basin (ca. 563 Ma, Brazil)
title_fullStr	The role of volcanic-derived clays in the preservation of Ediacaran biota from the Itajaí Basin (ca. 563 Ma, Brazil)
title_full_unstemmed	The role of volcanic-derived clays in the preservation of Ediacaran biota from the Itajaí Basin (ca. 563 Ma, Brazil)
title_sort	role of volcanic-derived clays in the preservation of ediacaran biota from the itajaí basin (ca. 563 ma, brazil)
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/e03db0eb54734b60acf6ce9b41cebb31
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The role of volcanic-derived clays in the preservation of Ediacaran biota from the Itajaí Basin (ca. 563 Ma, Brazil)

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