Preserved flora and organics in impact melt breccias

Autores
Schultz, P. H.; Harris, R. Scott; Clemett, S. J.; Thomas Keprta, K. L.; Zárate, Marcelo Arístides
Año de publicación
2014
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Impact cratering can destroy life from local to global scales and result in sudden turnovers of dominant genera and/or species. Here we report that it can also preserve components of the local biology present at the time of impact. We have investigated floral matter encapsulated within Cenozoic Era impact glasses produced by separate bolide impacts into the loessoid sediments of Argentina that occurred between 9.2 Ma (Miocene) and 6 ka (Holocene). The encapsulation preserved not only macro-scale morphological biosignatures such as vascular bundles, veins, phytoliths, and papillae, but also structures down to the cellular level. In the best-preserved samples we also found evidence for organic matter. While fossilization typically occurs over an extended time period as minerals slowly replace organic matter and the host rock lithifies under pressure, the process documented here is instantaneous. Preservation of morphological and chemical biosignatures in impact events can provide snapshots of the ecology in environments that do not otherwise promote a diverse fossil record. We suggest that this would provide a new strategy for identifying signs of possible early life on ancient Mars, where similar target conditions once existed.
Fil: Schultz, P. H.. University Brown; Estados Unidos
Fil: Harris, R. Scott. Georgia Department of Transportation. Office of Materials and Testing; Estados Unidos
Fil: Clemett, S. J.. Jacobs Technology Inc.; Estados Unidos
Fil: Thomas Keprta, K. L.. Jacobs Technology Inc.; Estados Unidos
Fil: Zárate, Marcelo Arístides. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de La Pampa; Argentina
Materia
Impact Glasses
Organic Remains
Pampean Loess
Argentina
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/19360
Acceder
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network_acronym_str CONICETDig
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network_name_str CONICET Digital (CONICET)
spelling Preserved flora and organics in impact melt brecciasSchultz, P. H.Harris, R. ScottClemett, S. J.Thomas Keprta, K. L.Zárate, Marcelo ArístidesImpact GlassesOrganic RemainsPampean LoessArgentinahttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1Impact cratering can destroy life from local to global scales and result in sudden turnovers of dominant genera and/or species. Here we report that it can also preserve components of the local biology present at the time of impact. We have investigated floral matter encapsulated within Cenozoic Era impact glasses produced by separate bolide impacts into the loessoid sediments of Argentina that occurred between 9.2 Ma (Miocene) and 6 ka (Holocene). The encapsulation preserved not only macro-scale morphological biosignatures such as vascular bundles, veins, phytoliths, and papillae, but also structures down to the cellular level. In the best-preserved samples we also found evidence for organic matter. While fossilization typically occurs over an extended time period as minerals slowly replace organic matter and the host rock lithifies under pressure, the process documented here is instantaneous. Preservation of morphological and chemical biosignatures in impact events can provide snapshots of the ecology in environments that do not otherwise promote a diverse fossil record. We suggest that this would provide a new strategy for identifying signs of possible early life on ancient Mars, where similar target conditions once existed.Fil: Schultz, P. H.. University Brown; Estados UnidosFil: Harris, R. Scott. Georgia Department of Transportation. Office of Materials and Testing; Estados UnidosFil: Clemett, S. J.. Jacobs Technology Inc.; Estados UnidosFil: Thomas Keprta, K. L.. Jacobs Technology Inc.; Estados UnidosFil: Zárate, Marcelo Arístides. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de La Pampa; ArgentinaGeological Society of America2014-06info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/19360Schultz, P. H.; Harris, R. Scott; Clemett, S. J. ; Thomas Keprta, K. L. ; Zárate, Marcelo Arístides; Preserved flora and organics in impact melt breccias; Geological Society of America; Geology; 42; 6; 6-2014; 515-5180091-76131943-2682CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://pubs.geoscienceworld.org/geology/article-abstract/42/6/515/131574/preserved-flora-and-organics-in-impact-melt?redirectedFrom=fulltextinfo:eu-repo/semantics/altIdentifier/doi/10.1130/G35343.1info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:51:42Zoai:ri.conicet.gov.ar:11336/19360instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 09:51:43.211CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Preserved flora and organics in impact melt breccias
title Preserved flora and organics in impact melt breccias
spellingShingle Preserved flora and organics in impact melt breccias
Schultz, P. H.
Impact Glasses
Organic Remains
Pampean Loess
Argentina
title_short Preserved flora and organics in impact melt breccias
title_full Preserved flora and organics in impact melt breccias
title_fullStr Preserved flora and organics in impact melt breccias
title_full_unstemmed Preserved flora and organics in impact melt breccias
title_sort Preserved flora and organics in impact melt breccias
dc.creator.none.fl_str_mv Schultz, P. H.
Harris, R. Scott
Clemett, S. J.
Thomas Keprta, K. L.
Zárate, Marcelo Arístides
author Schultz, P. H.
author_facet Schultz, P. H.
Harris, R. Scott
Clemett, S. J.
Thomas Keprta, K. L.
Zárate, Marcelo Arístides
author_role author
author2 Harris, R. Scott
Clemett, S. J.
Thomas Keprta, K. L.
Zárate, Marcelo Arístides
author2_role author
author
author
author
dc.subject.none.fl_str_mv Impact Glasses
Organic Remains
Pampean Loess
Argentina
topic Impact Glasses
Organic Remains
Pampean Loess
Argentina
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Impact cratering can destroy life from local to global scales and result in sudden turnovers of dominant genera and/or species. Here we report that it can also preserve components of the local biology present at the time of impact. We have investigated floral matter encapsulated within Cenozoic Era impact glasses produced by separate bolide impacts into the loessoid sediments of Argentina that occurred between 9.2 Ma (Miocene) and 6 ka (Holocene). The encapsulation preserved not only macro-scale morphological biosignatures such as vascular bundles, veins, phytoliths, and papillae, but also structures down to the cellular level. In the best-preserved samples we also found evidence for organic matter. While fossilization typically occurs over an extended time period as minerals slowly replace organic matter and the host rock lithifies under pressure, the process documented here is instantaneous. Preservation of morphological and chemical biosignatures in impact events can provide snapshots of the ecology in environments that do not otherwise promote a diverse fossil record. We suggest that this would provide a new strategy for identifying signs of possible early life on ancient Mars, where similar target conditions once existed.
Fil: Schultz, P. H.. University Brown; Estados Unidos
Fil: Harris, R. Scott. Georgia Department of Transportation. Office of Materials and Testing; Estados Unidos
Fil: Clemett, S. J.. Jacobs Technology Inc.; Estados Unidos
Fil: Thomas Keprta, K. L.. Jacobs Technology Inc.; Estados Unidos
Fil: Zárate, Marcelo Arístides. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de La Pampa; Argentina
description Impact cratering can destroy life from local to global scales and result in sudden turnovers of dominant genera and/or species. Here we report that it can also preserve components of the local biology present at the time of impact. We have investigated floral matter encapsulated within Cenozoic Era impact glasses produced by separate bolide impacts into the loessoid sediments of Argentina that occurred between 9.2 Ma (Miocene) and 6 ka (Holocene). The encapsulation preserved not only macro-scale morphological biosignatures such as vascular bundles, veins, phytoliths, and papillae, but also structures down to the cellular level. In the best-preserved samples we also found evidence for organic matter. While fossilization typically occurs over an extended time period as minerals slowly replace organic matter and the host rock lithifies under pressure, the process documented here is instantaneous. Preservation of morphological and chemical biosignatures in impact events can provide snapshots of the ecology in environments that do not otherwise promote a diverse fossil record. We suggest that this would provide a new strategy for identifying signs of possible early life on ancient Mars, where similar target conditions once existed.
publishDate 2014
dc.date.none.fl_str_mv 2014-06
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/19360
Schultz, P. H.; Harris, R. Scott; Clemett, S. J. ; Thomas Keprta, K. L. ; Zárate, Marcelo Arístides; Preserved flora and organics in impact melt breccias; Geological Society of America; Geology; 42; 6; 6-2014; 515-518
0091-7613
1943-2682
CONICET Digital
CONICET
url http://hdl.handle.net/11336/19360
identifier_str_mv Schultz, P. H.; Harris, R. Scott; Clemett, S. J. ; Thomas Keprta, K. L. ; Zárate, Marcelo Arístides; Preserved flora and organics in impact melt breccias; Geological Society of America; Geology; 42; 6; 6-2014; 515-518
0091-7613
1943-2682
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://pubs.geoscienceworld.org/geology/article-abstract/42/6/515/131574/preserved-flora-and-organics-in-impact-melt?redirectedFrom=fulltext
info:eu-repo/semantics/altIdentifier/doi/10.1130/G35343.1
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Geological Society of America
publisher.none.fl_str_mv Geological Society of America
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.070432

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