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dc.contributor.author
Ortí, Federico
dc.contributor.author
Alonso, Ricardo Narciso
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dc.date.available
2021-03-24T02:19:40Z
dc.date.issued
2000-05-01
dc.identifier.citation
Ortí, Federico; Alonso, Ricardo Narciso; Gypsum-hydroboracite association in the sues formation (Miocene, NW Argentina): implications for the genesis of Mg-bearing borates; Society for Sedimentary Geology; Journal of Sedimentary Research - (Print); 70; 3; 1-5-2000; 664-681
dc.identifier.issn
1527-1404
dc.identifier.uri
http://hdl.handle.net/11336/128858
dc.description.abstract
This paper deals with sedimentologic and diagenetic aspects of the evaporitic fades of the Sijes Formation (Miocene, central Andes, NW Argentina), which contains the largest known hydroboracite reserves in the world. In outcrop, the sulfate minerals are secondary gypsum and minor anhydrite, and the borate minerals are hydroboracite with subordinate inyoite and colemanite, and some ulexite. In the Monte Amarillo Member of the Sijes Formation it is possible to distinguish two coeval, shallow lacustrine subbasins, in which the gypsum accumulated in the margins and the hydroboracite in the centers, the intermediate zones being characterized by mixed gypsum-hydroboracite layers. In the depositional sequence, primary gypsum (gypsarenite) and syndepositional anhydrite, in association with limited amounts of calcium borates (colemanite, inyoite) precipitated first, followed by hydroboracite (calcium/magnesium borate). Alternations of gypsum and hydroboracite layers also formed. Hydroboracite is mainly a primary mineral, although it replaced some gypsum under synsedimentary conditions. The formation of colemanite, which occurred during early diagenesis, is linked to the precipitation of calcium sulfates (gypsum and anhydrite), whereas inyoite coexists with both calcium sulfates and magnesium-bearing borates. Transformations among the various borate minerals during burial diagenesis were not detected. Primary gypsum was transformed into anhydrite from early diagenesis to moderate burial diagenesis. The boron source of these deposits seems to be related to the volcanic/hydrothermal activity in the central Andes during the Miocene.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Society for Sedimentary Geology
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dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
BORATE
dc.subject
HYDROBORACITE
dc.subject
GYPSUM
dc.subject
PUNA
dc.subject.classification
Geología
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dc.subject.classification
Ciencias de la Tierra y relacionadas con el Medio Ambiente
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dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
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dc.title
Gypsum-hydroboracite association in the sues formation (Miocene, NW Argentina): implications for the genesis of Mg-bearing borates
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2021-03-15T14:41:26Z
dc.identifier.eissn
1938-3681
dc.journal.volume
70
dc.journal.number
3
dc.journal.pagination
664-681
dc.journal.pais
Estados Unidos
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dc.journal.ciudad
Lawrence
dc.description.fil
Fil: Ortí, Federico. Universidad de Barcelona; España
dc.description.fil
Fil: Alonso, Ricardo Narciso. Universidad Nacional de Salta; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Salta; Argentina
dc.journal.title
Journal of Sedimentary Research - (Print)
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/https://doi.org/10.1306/2DC4092F-0E47-11D7-8643000102C1865D
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://pubs.geoscienceworld.org/jsedres/article-lookup/70/3/664
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://archives.datapages.com/data/sepm/journals/v70/data/070/070003/0664.htm
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