Microbialites in a high-altitude andean lake: multiple controls in carbonate precipitation and lamina accretion

Autores
Gomez, Fernando Javier; Kah, Linda C.; Bartley, Julie K.; Astini, Ricardo Alfredo
Año de publicación
2014
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Microbialites comprise the mineralized record of early life on Earth and preserve a spectrum of fabrics that reflect complex physical, chemical, and biological interactions. The relatively rarity of microbialites in modern environments, however, challenges our interpretation of ancient structures. Here we report the occurrence of microbial mats, mineral precipitates, and stromatolitic oncolites in the Laguna Negra, a high-altitude Andean lake in Catamarca Province,Argentina. Extreme environmental conditions, including high UV-radiation, salinity, and temperature extremes, restrict multicellular life so that mineralization reflects a combination of local hydrologic conditions, lake geochemistry, and microbial activity. The resulting carbonate microtextures are strikingly similar to those observed in Proterozoic stromatolites, providing insight into potential mechanisms of mineralization. Here, increased saturation in carbonate minerals due to mixing of spring-fed inlets and lake waters favors microbialite formation and preservation. This highlights the importance of hydrological mixing zones in microbialites formation and as taphonomic windows to record microbial activity. Recent discoveries of minerals related to evaporating playa-lake systems on Mars further highlights the potential of Laguna Negra to provide critical insight into biosignature preservation in both terrestrial and extraterrestrial settings.
Fil: Gomez, Fernando Javier. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro de Investigaciones en Ciencias de la Tierra. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Centro de Investigaciones en Ciencias de la Tierra; Argentina
Fil: Kah, Linda C.. University of Tennessee; Estados Unidos
Fil: Bartley, Julie K.. Gustavus Adolphus College; Estados Unidos
Fil: Astini, Ricardo Alfredo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro de Investigaciones en Ciencias de la Tierra. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Centro de Investigaciones en Ciencias de la Tierra; Argentina
Materia
Geomicrobiology
Biogeochemistry
Sedimentology
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:11336/32075
Acceder
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network_name_str CONICET Digital (CONICET)
spelling Microbialites in a high-altitude andean lake: multiple controls in carbonate precipitation and lamina accretionGomez, Fernando JavierKah, Linda C.Bartley, Julie K.Astini, Ricardo AlfredoGeomicrobiologyBiogeochemistrySedimentologyhttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1Microbialites comprise the mineralized record of early life on Earth and preserve a spectrum of fabrics that reflect complex physical, chemical, and biological interactions. The relatively rarity of microbialites in modern environments, however, challenges our interpretation of ancient structures. Here we report the occurrence of microbial mats, mineral precipitates, and stromatolitic oncolites in the Laguna Negra, a high-altitude Andean lake in Catamarca Province,Argentina. Extreme environmental conditions, including high UV-radiation, salinity, and temperature extremes, restrict multicellular life so that mineralization reflects a combination of local hydrologic conditions, lake geochemistry, and microbial activity. The resulting carbonate microtextures are strikingly similar to those observed in Proterozoic stromatolites, providing insight into potential mechanisms of mineralization. Here, increased saturation in carbonate minerals due to mixing of spring-fed inlets and lake waters favors microbialite formation and preservation. This highlights the importance of hydrological mixing zones in microbialites formation and as taphonomic windows to record microbial activity. Recent discoveries of minerals related to evaporating playa-lake systems on Mars further highlights the potential of Laguna Negra to provide critical insight into biosignature preservation in both terrestrial and extraterrestrial settings.Fil: Gomez, Fernando Javier. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro de Investigaciones en Ciencias de la Tierra. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Centro de Investigaciones en Ciencias de la Tierra; ArgentinaFil: Kah, Linda C.. University of Tennessee; Estados UnidosFil: Bartley, Julie K.. Gustavus Adolphus College; Estados UnidosFil: Astini, Ricardo Alfredo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro de Investigaciones en Ciencias de la Tierra. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Centro de Investigaciones en Ciencias de la Tierra; ArgentinaSociety for Sedimentary Geology2014-06info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/32075Astini, Ricardo Alfredo; Bartley, Julie K.; Kah, Linda C.; Gomez, Fernando Javier; Microbialites in a high-altitude andean lake: multiple controls in carbonate precipitation and lamina accretion; Society for Sedimentary Geology; Palaios; 29; 6; 6-2014; 233-2490883-1351CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://pubs.geoscienceworld.org/sepm/palaios/article-abstract/29/6/233/146391info:eu-repo/semantics/altIdentifier/doi/10.2110/palo.2013.049info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-10T13:24:01Zoai:ri.conicet.gov.ar:11336/32075instacron: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:34982025-09-10 13:24:01.681CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Microbialites in a high-altitude andean lake: multiple controls in carbonate precipitation and lamina accretion
title Microbialites in a high-altitude andean lake: multiple controls in carbonate precipitation and lamina accretion
spellingShingle Microbialites in a high-altitude andean lake: multiple controls in carbonate precipitation and lamina accretion
Gomez, Fernando Javier
Geomicrobiology
Biogeochemistry
Sedimentology
title_short Microbialites in a high-altitude andean lake: multiple controls in carbonate precipitation and lamina accretion
title_full Microbialites in a high-altitude andean lake: multiple controls in carbonate precipitation and lamina accretion
title_fullStr Microbialites in a high-altitude andean lake: multiple controls in carbonate precipitation and lamina accretion
title_full_unstemmed Microbialites in a high-altitude andean lake: multiple controls in carbonate precipitation and lamina accretion
title_sort Microbialites in a high-altitude andean lake: multiple controls in carbonate precipitation and lamina accretion
dc.creator.none.fl_str_mv Gomez, Fernando Javier
Kah, Linda C.
Bartley, Julie K.
Astini, Ricardo Alfredo
author Gomez, Fernando Javier
author_facet Gomez, Fernando Javier
Kah, Linda C.
Bartley, Julie K.
Astini, Ricardo Alfredo
author_role author
author2 Kah, Linda C.
Bartley, Julie K.
Astini, Ricardo Alfredo
author2_role author
author
author
dc.subject.none.fl_str_mv Geomicrobiology
Biogeochemistry
Sedimentology
topic Geomicrobiology
Biogeochemistry
Sedimentology
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Microbialites comprise the mineralized record of early life on Earth and preserve a spectrum of fabrics that reflect complex physical, chemical, and biological interactions. The relatively rarity of microbialites in modern environments, however, challenges our interpretation of ancient structures. Here we report the occurrence of microbial mats, mineral precipitates, and stromatolitic oncolites in the Laguna Negra, a high-altitude Andean lake in Catamarca Province,Argentina. Extreme environmental conditions, including high UV-radiation, salinity, and temperature extremes, restrict multicellular life so that mineralization reflects a combination of local hydrologic conditions, lake geochemistry, and microbial activity. The resulting carbonate microtextures are strikingly similar to those observed in Proterozoic stromatolites, providing insight into potential mechanisms of mineralization. Here, increased saturation in carbonate minerals due to mixing of spring-fed inlets and lake waters favors microbialite formation and preservation. This highlights the importance of hydrological mixing zones in microbialites formation and as taphonomic windows to record microbial activity. Recent discoveries of minerals related to evaporating playa-lake systems on Mars further highlights the potential of Laguna Negra to provide critical insight into biosignature preservation in both terrestrial and extraterrestrial settings.
Fil: Gomez, Fernando Javier. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro de Investigaciones en Ciencias de la Tierra. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Centro de Investigaciones en Ciencias de la Tierra; Argentina
Fil: Kah, Linda C.. University of Tennessee; Estados Unidos
Fil: Bartley, Julie K.. Gustavus Adolphus College; Estados Unidos
Fil: Astini, Ricardo Alfredo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro de Investigaciones en Ciencias de la Tierra. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Centro de Investigaciones en Ciencias de la Tierra; Argentina
description Microbialites comprise the mineralized record of early life on Earth and preserve a spectrum of fabrics that reflect complex physical, chemical, and biological interactions. The relatively rarity of microbialites in modern environments, however, challenges our interpretation of ancient structures. Here we report the occurrence of microbial mats, mineral precipitates, and stromatolitic oncolites in the Laguna Negra, a high-altitude Andean lake in Catamarca Province,Argentina. Extreme environmental conditions, including high UV-radiation, salinity, and temperature extremes, restrict multicellular life so that mineralization reflects a combination of local hydrologic conditions, lake geochemistry, and microbial activity. The resulting carbonate microtextures are strikingly similar to those observed in Proterozoic stromatolites, providing insight into potential mechanisms of mineralization. Here, increased saturation in carbonate minerals due to mixing of spring-fed inlets and lake waters favors microbialite formation and preservation. This highlights the importance of hydrological mixing zones in microbialites formation and as taphonomic windows to record microbial activity. Recent discoveries of minerals related to evaporating playa-lake systems on Mars further highlights the potential of Laguna Negra to provide critical insight into biosignature preservation in both terrestrial and extraterrestrial settings.
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/11336/32075
Astini, Ricardo Alfredo; Bartley, Julie K.; Kah, Linda C.; Gomez, Fernando Javier; Microbialites in a high-altitude andean lake: multiple controls in carbonate precipitation and lamina accretion; Society for Sedimentary Geology; Palaios; 29; 6; 6-2014; 233-249
0883-1351
CONICET Digital
CONICET
url http://hdl.handle.net/11336/32075
identifier_str_mv Astini, Ricardo Alfredo; Bartley, Julie K.; Kah, Linda C.; Gomez, Fernando Javier; Microbialites in a high-altitude andean lake: multiple controls in carbonate precipitation and lamina accretion; Society for Sedimentary Geology; Palaios; 29; 6; 6-2014; 233-249
0883-1351
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/sepm/palaios/article-abstract/29/6/233/146391
info:eu-repo/semantics/altIdentifier/doi/10.2110/palo.2013.049
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 Society for Sedimentary Geology
publisher.none.fl_str_mv Society for Sedimentary Geology
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 12.48226

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