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dc.contributor.author
Sruoga, Patricia
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dc.contributor.author
Rubinstein, Nora Alicia
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dc.contributor.author
Hinterwimmer, Gerardo
dc.date.available
2019-09-12T23:35:16Z
dc.date.issued
2004-04
dc.identifier.citation
Sruoga, Patricia; Rubinstein, Nora Alicia; Hinterwimmer, Gerardo; Porosity and permeability in volcanic rocks: A case study on the Serie Tobífera, South Patagonia, Argentina; Elsevier Science; Journal of Volcanology and Geothermal Research; 132; 1; 4-2004; 31-43
dc.identifier.issn
0377-0273
dc.identifier.uri
http://hdl.handle.net/11336/83500
dc.description.abstract
The Middle to Late Jurassic Serie Tobífera belongs to the Chon-Aike Province and extends all over Patagonia and the Antarctic Peninsula. It consists largely of ignimbrites, epiclastics and rhyolitic lavas and was considered only a minor reservoir rock for oil with fracture permeability. Petrographic and petrophysical data in selected core samples from the Austral Basin were collected to determine the processes controlling the porosity and permeability of these volcanic rocks. The sequence of processes occurring during cooling and in the post-cooling stages can modify, sometimes substantially, their original petrophysic characteristics. The results show that the highest porosity and permeability occur in rocks with quench fractured glasses and in non-welded ignimbrites with gas-pipe structures, followed by autobrecciated rhyolites. Welded ignimbrites, massive glasses and fresh rhyolites have the lowest permeabilities. The new data indicate that tectonic fracturing is not as significant as was considered before and application of these concepts are relevant in the assesment of volcanic reservoir quality.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Elsevier Science
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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
Permeability
dc.subject
Porosity
dc.subject
South Patagonia
dc.subject
Tobífera
dc.subject
Volcanics
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
Porosity and permeability in volcanic rocks: A case study on the Serie Tobífera, South Patagonia, Argentina
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2019-07-15T14:21:34Z
dc.journal.volume
132
dc.journal.number
1
dc.journal.pagination
31-43
dc.journal.pais
Países Bajos
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dc.journal.ciudad
Amsterdam
dc.description.fil
Fil: Sruoga, Patricia. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Secretaría de Industria y Minería. Servicio Geológico Minero Argentino; Argentina
dc.description.fil
Fil: Rubinstein, Nora Alicia. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Geología; Argentina
dc.description.fil
Fil: Hinterwimmer, Gerardo. CHEVRON; Argentina
dc.journal.title
Journal of Volcanology and Geothermal Research
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0377027303004190
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/S0377-0273(03)00419-0
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