Thenardite after mirabilite deposits as a cool climate indicator in the geological record: lower Miocene of central Spain
Salt deposits are commonly used as indicators of different paleoclimates and sedimentary environments, as well as being geological resources of great economic interest. Ordinarily, the presence of salt deposits is related to warm and arid environmental conditions, but there are salts, like mirabilit...
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ftcopernicus:oai:publications.copernicus.org:cp25939 2023-05-15T13:54:27+02:00 Thenardite after mirabilite deposits as a cool climate indicator in the geological record: lower Miocene of central Spain Herrero, M. J. Escavy, J. I. Schreiber, B. C. 2018-09-27 application/pdf https://doi.org/10.5194/cp-11-1-2015 https://cp.copernicus.org/articles/11/1/2015/ eng eng doi:10.5194/cp-11-1-2015 https://cp.copernicus.org/articles/11/1/2015/ eISSN: 1814-9332 Text 2018 ftcopernicus https://doi.org/10.5194/cp-11-1-2015 2020-07-20T16:24:50Z Salt deposits are commonly used as indicators of different paleoclimates and sedimentary environments, as well as being geological resources of great economic interest. Ordinarily, the presence of salt deposits is related to warm and arid environmental conditions, but there are salts, like mirabilite, that form by cooling and a concentration mechanism based on cooling and/or freezing. The diagenetic transformation of mirabilite into thenardite in the upper part of the lower Miocene unit of the Tajo basin (Spain) resulted in the largest reserves of this important industrial mineral in Europe. This unit was formed in a time period (~18.4 Ma) that, in other basins of the Iberian Peninsula, is characterized by the existence of particular mammal assemblages appropriate to a relatively cool and arid climate. Determining the origin of the thenardite deposits as related to the diagenetic alteration of a pre-existing mirabilite permits the establishment and characterization of the sedimentary environment where it was formed and also suggests use as a possible analog with comparable deposits from extreme conditions such as Antarctica or Mars. Text Antarc* Antarctica Copernicus Publications: E-Journals Climate of the Past 11 1 1 13 |
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Copernicus Publications: E-Journals |
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English |
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Salt deposits are commonly used as indicators of different paleoclimates and sedimentary environments, as well as being geological resources of great economic interest. Ordinarily, the presence of salt deposits is related to warm and arid environmental conditions, but there are salts, like mirabilite, that form by cooling and a concentration mechanism based on cooling and/or freezing. The diagenetic transformation of mirabilite into thenardite in the upper part of the lower Miocene unit of the Tajo basin (Spain) resulted in the largest reserves of this important industrial mineral in Europe. This unit was formed in a time period (~18.4 Ma) that, in other basins of the Iberian Peninsula, is characterized by the existence of particular mammal assemblages appropriate to a relatively cool and arid climate. Determining the origin of the thenardite deposits as related to the diagenetic alteration of a pre-existing mirabilite permits the establishment and characterization of the sedimentary environment where it was formed and also suggests use as a possible analog with comparable deposits from extreme conditions such as Antarctica or Mars. |
format |
Text |
author |
Herrero, M. J. Escavy, J. I. Schreiber, B. C. |
spellingShingle |
Herrero, M. J. Escavy, J. I. Schreiber, B. C. Thenardite after mirabilite deposits as a cool climate indicator in the geological record: lower Miocene of central Spain |
author_facet |
Herrero, M. J. Escavy, J. I. Schreiber, B. C. |
author_sort |
Herrero, M. J. |
title |
Thenardite after mirabilite deposits as a cool climate indicator in the geological record: lower Miocene of central Spain |
title_short |
Thenardite after mirabilite deposits as a cool climate indicator in the geological record: lower Miocene of central Spain |
title_full |
Thenardite after mirabilite deposits as a cool climate indicator in the geological record: lower Miocene of central Spain |
title_fullStr |
Thenardite after mirabilite deposits as a cool climate indicator in the geological record: lower Miocene of central Spain |
title_full_unstemmed |
Thenardite after mirabilite deposits as a cool climate indicator in the geological record: lower Miocene of central Spain |
title_sort |
thenardite after mirabilite deposits as a cool climate indicator in the geological record: lower miocene of central spain |
publishDate |
2018 |
url |
https://doi.org/10.5194/cp-11-1-2015 https://cp.copernicus.org/articles/11/1/2015/ |
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Antarc* Antarctica |
genre_facet |
Antarc* Antarctica |
op_source |
eISSN: 1814-9332 |
op_relation |
doi:10.5194/cp-11-1-2015 https://cp.copernicus.org/articles/11/1/2015/ |
op_doi |
https://doi.org/10.5194/cp-11-1-2015 |
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Climate of the Past |
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11 |
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1 |
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1 |
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13 |
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1766260357395906560 |