Palaeoenvironmental use of silicophytoliths in soils and palaeosols associated with Holocene volcanic ash deposits in north-western Argentina

We compare the silicophytolith record of current soils and Holocene palaeosols from two sedimentary sequences in a region between the Chaco-Pampean Plain and the Puna (Tolombón section in Santa María Valley, and Tafí del Valle section in Tafí Valley), NW Argentina. These two geographic areas are sep...

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Autores: Osterrieth, M., Alvarez, M. F., Gallardo, Juan F., Saavedra, J., Fernandez-Turiel, J. L., Rodriguez-Gonzalez, A., Pérez-Torrado, Francisco J., Rejas, Marta
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2019
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/185417
Acceso en línea:http://hdl.handle.net/10261/185417
Access Level:acceso abierto
Palabra clave:Environment
Vegetation
volcanic ash
Holocene
Cerro Blanco Volcanic Complex
Argentina
Andes
Silicophytolith
Shrubland
Grassland
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spelling Palaeoenvironmental use of silicophytoliths in soils and palaeosols associated with Holocene volcanic ash deposits in north-western ArgentinaOsterrieth, M.Alvarez, M. F.Gallardo, Juan F.Saavedra, J.Fernandez-Turiel, J. L.Rodriguez-Gonzalez, A.Pérez-Torrado, Francisco J.Rejas, MartaEnvironmentVegetationvolcanic ashHoloceneCerro Blanco Volcanic ComplexArgentinaAndesSilicophytolithShrublandGrasslandWe compare the silicophytolith record of current soils and Holocene palaeosols from two sedimentary sequences in a region between the Chaco-Pampean Plain and the Puna (Tolombón section in Santa María Valley, and Tafí del Valle section in Tafí Valley), NW Argentina. These two geographic areas are separated by the Aconquija-Cumbres Calchaquíes ranges, a climatic barrier to the wet Atlantic winds. These sequences contain volcanic ash deposits recording two large eruptions occurred during Holocene in the Southern Puna in the Central Volcanic Zone of the Andes, from the Cueros de Purulla volcano (ca. 7820 BP) and the Cerro Blanco Volcanic Complex (ca. 4200 cal BP). These ash-fall deposits buried soils and preserved their silicophytolith record, allowing the use of this palaeoenvironmental proxy to clarify the vegetation prior these two volcanic events. The silicophytolith assemblages yield evidence for a mega/mesothermal xerophytic grassland when Tolombón palaeosol was formed, similar to the present-day environment in the Santa María Valley, with presence of C4 grasses (Chloridoideae and Panicoidae). Instead, the climate was cooler and wetter ca. 4200 cal BP than currently in the Tafí Valley, increasing over time aridity and abundance of C4 grasses (Chloridoidae, Panicoideae), and decreasing the quantity of C3 grasses (Pooideae). Prehistorical and historical land use also contributed to this change. The impact of these large volcanic ash-falls on vegetation did not translate in an abrupt change on phytodiversity. Results point out a stable arid environment during Holocene in the Santa María Valley whereas the Tafí Valley was more sensitive to environmental changes due to its location in the eastern slopes of Aconquija-Cumbres Calchaquíes ranges, more exposed to the wet Atlantic winds.MINECO, Spain, CGL2011-23307, Project QUECA Agencia-Ministerio de Ciencia y Técnica, Argentina, PICT-1583-2013 Universidad Nacional de Mar del Plata, EXA 643/13 Canary Islands Government, ULPGC, Research Consolidated Group GEOVOL Generalitat de Catalunya, 2017 SGR 1494, Research Consolidated Group GEOPAMPeer reviewedElsevierMinisterio de Economía y Competitividad (España)Agencia Nacional de Promoción Científica y Tecnológica (Argentina)Universidad Nacional de Mar del PlataGobierno de CanariasGeneralitat de CatalunyaOsterrieth, M. [0000-0001-9892-9923]Alvarez, M. F. [0000-0002-2715-5710]Gallardo, J. F. [0000-0002-4174-3930]Saavedra, J. [0000-0003-0567-5499]Fernandez-Turiel, J. L. [0000-0002-4383-799X]Rodríguez-Gonzalez, A. [0000-0003-0688-0531]Perez-Torrado, F. J. [0000-0002-4644-0875]Rejas, M. [0000-0003-2356-0927]Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]201920192019info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Postprintinfo:eu-repo/semantics/acceptedVersionhttp://hdl.handle.net/10261/185417reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttps://doi.org/10.1016/j.quaint.2019.07.001Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/1854172026-05-22T06:33:51Z
dc.title.none.fl_str_mv Palaeoenvironmental use of silicophytoliths in soils and palaeosols associated with Holocene volcanic ash deposits in north-western Argentina
title Palaeoenvironmental use of silicophytoliths in soils and palaeosols associated with Holocene volcanic ash deposits in north-western Argentina
spellingShingle Palaeoenvironmental use of silicophytoliths in soils and palaeosols associated with Holocene volcanic ash deposits in north-western Argentina
Osterrieth, M.
Environment
Vegetation
volcanic ash
Holocene
Cerro Blanco Volcanic Complex
Argentina
Andes
Silicophytolith
Shrubland
Grassland
title_short Palaeoenvironmental use of silicophytoliths in soils and palaeosols associated with Holocene volcanic ash deposits in north-western Argentina
title_full Palaeoenvironmental use of silicophytoliths in soils and palaeosols associated with Holocene volcanic ash deposits in north-western Argentina
title_fullStr Palaeoenvironmental use of silicophytoliths in soils and palaeosols associated with Holocene volcanic ash deposits in north-western Argentina
title_full_unstemmed Palaeoenvironmental use of silicophytoliths in soils and palaeosols associated with Holocene volcanic ash deposits in north-western Argentina
title_sort Palaeoenvironmental use of silicophytoliths in soils and palaeosols associated with Holocene volcanic ash deposits in north-western Argentina
dc.creator.none.fl_str_mv Osterrieth, M.
Alvarez, M. F.
Gallardo, Juan F.
Saavedra, J.
Fernandez-Turiel, J. L.
Rodriguez-Gonzalez, A.
Pérez-Torrado, Francisco J.
Rejas, Marta
author Osterrieth, M.
author_facet Osterrieth, M.
Alvarez, M. F.
Gallardo, Juan F.
Saavedra, J.
Fernandez-Turiel, J. L.
Rodriguez-Gonzalez, A.
Pérez-Torrado, Francisco J.
Rejas, Marta
author_role author
author2 Alvarez, M. F.
Gallardo, Juan F.
Saavedra, J.
Fernandez-Turiel, J. L.
Rodriguez-Gonzalez, A.
Pérez-Torrado, Francisco J.
Rejas, Marta
author2_role author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv Ministerio de Economía y Competitividad (España)
Agencia Nacional de Promoción Científica y Tecnológica (Argentina)
Universidad Nacional de Mar del Plata
Gobierno de Canarias
Generalitat de Catalunya
Osterrieth, M. [0000-0001-9892-9923]
Alvarez, M. F. [0000-0002-2715-5710]
Gallardo, J. F. [0000-0002-4174-3930]
Saavedra, J. [0000-0003-0567-5499]
Fernandez-Turiel, J. L. [0000-0002-4383-799X]
Rodríguez-Gonzalez, A. [0000-0003-0688-0531]
Perez-Torrado, F. J. [0000-0002-4644-0875]
Rejas, M. [0000-0003-2356-0927]
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Environment
Vegetation
volcanic ash
Holocene
Cerro Blanco Volcanic Complex
Argentina
Andes
Silicophytolith
Shrubland
Grassland
topic Environment
Vegetation
volcanic ash
Holocene
Cerro Blanco Volcanic Complex
Argentina
Andes
Silicophytolith
Shrubland
Grassland
description We compare the silicophytolith record of current soils and Holocene palaeosols from two sedimentary sequences in a region between the Chaco-Pampean Plain and the Puna (Tolombón section in Santa María Valley, and Tafí del Valle section in Tafí Valley), NW Argentina. These two geographic areas are separated by the Aconquija-Cumbres Calchaquíes ranges, a climatic barrier to the wet Atlantic winds. These sequences contain volcanic ash deposits recording two large eruptions occurred during Holocene in the Southern Puna in the Central Volcanic Zone of the Andes, from the Cueros de Purulla volcano (ca. 7820 BP) and the Cerro Blanco Volcanic Complex (ca. 4200 cal BP). These ash-fall deposits buried soils and preserved their silicophytolith record, allowing the use of this palaeoenvironmental proxy to clarify the vegetation prior these two volcanic events. The silicophytolith assemblages yield evidence for a mega/mesothermal xerophytic grassland when Tolombón palaeosol was formed, similar to the present-day environment in the Santa María Valley, with presence of C4 grasses (Chloridoideae and Panicoidae). Instead, the climate was cooler and wetter ca. 4200 cal BP than currently in the Tafí Valley, increasing over time aridity and abundance of C4 grasses (Chloridoidae, Panicoideae), and decreasing the quantity of C3 grasses (Pooideae). Prehistorical and historical land use also contributed to this change. The impact of these large volcanic ash-falls on vegetation did not translate in an abrupt change on phytodiversity. Results point out a stable arid environment during Holocene in the Santa María Valley whereas the Tafí Valley was more sensitive to environmental changes due to its location in the eastern slopes of Aconquija-Cumbres Calchaquíes ranges, more exposed to the wet Atlantic winds.
publishDate 2019
dc.date.none.fl_str_mv 2019
2019
2019
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Postprint
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/185417
url http://hdl.handle.net/10261/185417
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv https://doi.org/10.1016/j.quaint.2019.07.001
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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