Carbonate and organic matter sedimentation and isotopic signatures in Lake Chungará, Chilean altiplano, during the last 12.3 kyr.

Sediments in lakes in the Andean volcanic setting are often made up of diatomaceous ooze together with volcaniclastics and small amounts of carbonates. Despite their scarcity, carbonates along with organic matter provide significant paleoenvironmental information about lake systems. This study focus...

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Autores: Pueyo Mur, Juan José, Sáez, Alberto, Giralt Romeu, Santiago, Valero Garcés, Blas Lorenzo, Moreno, Ana, Bao Casal, Roberto, Schwalb, Antje, Herrera, Christian, Klosowska, Bogumila, Taberner, Conxita
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2011
País:España
Institución:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
Repositorio:Recercat. Dipósit de la Recerca de Catalunya
OAI Identifier:oai:recercat.cat:2445/34509
Acceso en línea:https://hdl.handle.net/2445/34509
Access Level:acceso abierto
Palabra clave:Carbonats
Sedimentació
Xile
Carbonates
Sedimentation
Chile
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spelling Carbonate and organic matter sedimentation and isotopic signatures in Lake Chungará, Chilean altiplano, during the last 12.3 kyr.Pueyo Mur, Juan JoséSáez, AlbertoGiralt Romeu, SantiagoValero Garcés, Blas LorenzoMoreno, AnaBao Casal, RobertoSchwalb, AntjeHerrera, ChristianKlosowska, BogumilaTaberner, ConxitaCarbonatsSedimentacióXileCarbonatesSedimentationChileSediments in lakes in the Andean volcanic setting are often made up of diatomaceous ooze together with volcaniclastics and small amounts of carbonates. Despite their scarcity, carbonates along with organic matter provide significant paleoenvironmental information about lake systems. This study focuses on the carbonates in Lake Chungará, their morphologies, distribution and origin deduced from the isotopic markers. These markers re flected changes in the water and the biomass between the onset of the Holocene and around 9.6 calkyr BP. These changes are marked by general increases in TOC, TN,and TN-δ15 NAIR, andby fluctuating values of TOC-δ13 CVPDB in its sediments and are probably related to major shifts in the lake surface/volume associated with rises in lake level. An increase in salinity around 10 cal kyr BPis thought to be linked toa short dryperiod, giving rise to the onset of carbonate production. The mid-Holocene arid period between 7.3 and 3.5 cal ka BP, with a maximum of aridity around 6.0 cal kyr BP, was deduced from δ18O VPDB values in the endogenic carbonates. These results match the reconstructions in Lake Titicaca based on benthic diatoms and paleoshore levels.Elsevier B.V.2013201320112013info:eu-repo/semantics/articleinfo:eu-repo/semantics/acceptedVersion17 p.application/pdfhttps://hdl.handle.net/2445/34509Articles publicats en revistes (Dinàmica de la Terra i l'Oceà)reponame:Recercat. Dipósit de la Recerca de Catalunyainstname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)InglésReproducció del document publicat a: https://doi.org/10.1016/j.palaeo.2011.05.036Palaeogeography Palaeoclimatology Palaeoecology, 2011, vol. 307, p. 339-355https://doi.org/10.1016/j.palaeo.2011.05.036(c) Elsevier B.V., 2011info:eu-repo/semantics/openAccessoai:recercat.cat:2445/345092026-05-29T05:05:01Z
dc.title.none.fl_str_mv Carbonate and organic matter sedimentation and isotopic signatures in Lake Chungará, Chilean altiplano, during the last 12.3 kyr.
title Carbonate and organic matter sedimentation and isotopic signatures in Lake Chungará, Chilean altiplano, during the last 12.3 kyr.
spellingShingle Carbonate and organic matter sedimentation and isotopic signatures in Lake Chungará, Chilean altiplano, during the last 12.3 kyr.
Pueyo Mur, Juan José
Carbonats
Sedimentació
Xile
Carbonates
Sedimentation
Chile
title_short Carbonate and organic matter sedimentation and isotopic signatures in Lake Chungará, Chilean altiplano, during the last 12.3 kyr.
title_full Carbonate and organic matter sedimentation and isotopic signatures in Lake Chungará, Chilean altiplano, during the last 12.3 kyr.
title_fullStr Carbonate and organic matter sedimentation and isotopic signatures in Lake Chungará, Chilean altiplano, during the last 12.3 kyr.
title_full_unstemmed Carbonate and organic matter sedimentation and isotopic signatures in Lake Chungará, Chilean altiplano, during the last 12.3 kyr.
title_sort Carbonate and organic matter sedimentation and isotopic signatures in Lake Chungará, Chilean altiplano, during the last 12.3 kyr.
dc.creator.none.fl_str_mv Pueyo Mur, Juan José
Sáez, Alberto
Giralt Romeu, Santiago
Valero Garcés, Blas Lorenzo
Moreno, Ana
Bao Casal, Roberto
Schwalb, Antje
Herrera, Christian
Klosowska, Bogumila
Taberner, Conxita
author Pueyo Mur, Juan José
author_facet Pueyo Mur, Juan José
Sáez, Alberto
Giralt Romeu, Santiago
Valero Garcés, Blas Lorenzo
Moreno, Ana
Bao Casal, Roberto
Schwalb, Antje
Herrera, Christian
Klosowska, Bogumila
Taberner, Conxita
author_role author
author2 Sáez, Alberto
Giralt Romeu, Santiago
Valero Garcés, Blas Lorenzo
Moreno, Ana
Bao Casal, Roberto
Schwalb, Antje
Herrera, Christian
Klosowska, Bogumila
Taberner, Conxita
author2_role author
author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Carbonats
Sedimentació
Xile
Carbonates
Sedimentation
Chile
topic Carbonats
Sedimentació
Xile
Carbonates
Sedimentation
Chile
description Sediments in lakes in the Andean volcanic setting are often made up of diatomaceous ooze together with volcaniclastics and small amounts of carbonates. Despite their scarcity, carbonates along with organic matter provide significant paleoenvironmental information about lake systems. This study focuses on the carbonates in Lake Chungará, their morphologies, distribution and origin deduced from the isotopic markers. These markers re flected changes in the water and the biomass between the onset of the Holocene and around 9.6 calkyr BP. These changes are marked by general increases in TOC, TN,and TN-δ15 NAIR, andby fluctuating values of TOC-δ13 CVPDB in its sediments and are probably related to major shifts in the lake surface/volume associated with rises in lake level. An increase in salinity around 10 cal kyr BPis thought to be linked toa short dryperiod, giving rise to the onset of carbonate production. The mid-Holocene arid period between 7.3 and 3.5 cal ka BP, with a maximum of aridity around 6.0 cal kyr BP, was deduced from δ18O VPDB values in the endogenic carbonates. These results match the reconstructions in Lake Titicaca based on benthic diatoms and paleoshore levels.
publishDate 2011
dc.date.none.fl_str_mv 2011
2013
2013
2013
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/2445/34509
url https://hdl.handle.net/2445/34509
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Reproducció del document publicat a: https://doi.org/10.1016/j.palaeo.2011.05.036
Palaeogeography Palaeoclimatology Palaeoecology, 2011, vol. 307, p. 339-355
https://doi.org/10.1016/j.palaeo.2011.05.036
dc.rights.none.fl_str_mv (c) Elsevier B.V., 2011
info:eu-repo/semantics/openAccess
rights_invalid_str_mv (c) Elsevier B.V., 2011
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 17 p.
application/pdf
dc.publisher.none.fl_str_mv Elsevier B.V.
publisher.none.fl_str_mv Elsevier B.V.
dc.source.none.fl_str_mv Articles publicats en revistes (Dinàmica de la Terra i l'Oceà)
reponame:Recercat. Dipósit de la Recerca de Catalunya
instname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
instname_str Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
reponame_str Recercat. Dipósit de la Recerca de Catalunya
collection Recercat. Dipósit de la Recerca de Catalunya
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15.81155

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