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dc.contributor.author
Christiansen, Rodolfo Omar  
dc.contributor.author
Gianni, Guido Martin  
dc.contributor.author
Ballivian Justiniano, Carlos Alberto  
dc.contributor.author
Garcia, Hector Pedro Antonio  
dc.contributor.author
Wohnlich, Stefan  
dc.date.available
2022-06-22T18:34:44Z  
dc.date.issued
2022-04  
dc.identifier.citation
Christiansen, Rodolfo Omar; Gianni, Guido Martin; Ballivian Justiniano, Carlos Alberto; Garcia, Hector Pedro Antonio; Wohnlich, Stefan; The role of geotectonic setting on the heat flow distribution of southern South America; Oxford University Press; Geophysical Journal International; 230; 3; 4-2022; 1911-1927  
dc.identifier.issn
0956-540X  
dc.identifier.uri
http://hdl.handle.net/11336/160251  
dc.description.abstract
The surface heat flow of southern South America was examined based on an updated database containing 1113 locations. Accordingly, this study presents the most accurate heat flow map of the southern portion of the continent (south of 16°30′S latitude), covering areas that previously presented limited information. The main anomalies show a strong spatial correlation with geothermal zones and with the most up-to-date lithospheric thickness maps. The blanketing effect produced by the sedimentary basins reduce the surface heat flow up to 27 mW m–2 over the thickest basins. The study region was separated into four large areas and their connection to tectonic processes analysed. The Central Andes present high heat flow zones related to a thick radiogenic crust, volcanic activity, and a hot asthenospheric wedge. In the Pampean flat-slab region, the low heat flow coincides mostly with the horizontal projection of the Juan Fernández aseismic ridge and not with a wide region as previously thought. Furthermore, a close relationship between the subduction of the ridges at different angles and a cold upper-plate lithosphere is suggested. Besides active regions of arc magmatism and a thin lithosphere, we propose that a hot upper-plate upwelling beneath the Patagonian Platform is also contributing to the high heat flow in the area. The foreland region exhibits a low heat flow coinciding with a thick cratonic lithosphere, and local high heat flow values in suture zones possibly triggered by ancient delamination beneath these regions.  
dc.format
application/pdf  
dc.language.iso
eng  
dc.publisher
Oxford University Press  
dc.rights
info:eu-repo/semantics/restrictedAccess  
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/  
dc.subject
HEAT FLOW  
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STRUCTURE OF THE EARTH  
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SOUTH AMERICA  
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HEAT  
dc.subject.classification
Geoquímica y Geofísica  
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Ciencias de la Tierra y relacionadas con el Medio Ambiente  
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CIENCIAS NATURALES Y EXACTAS  
dc.title
The role of geotectonic setting on the heat flow distribution of southern South America  
dc.type
info:eu-repo/semantics/article  
dc.type
info:ar-repo/semantics/artículo  
dc.type
info:eu-repo/semantics/publishedVersion  
dc.date.updated
2022-06-21T18:31:59Z  
dc.journal.volume
230  
dc.journal.number
3  
dc.journal.pagination
1911-1927  
dc.journal.pais
Reino Unido  
dc.journal.ciudad
Oxford  
dc.description.fil
Fil: Christiansen, Rodolfo Omar. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Juan; Argentina. Universidad Nacional de San Juan. Facultad de Ciencias Exactas, Físicas y Naturales. Instituto Geofísico Sismológico Volponi; Argentina. Ruhr Universität Bochum; Alemania  
dc.description.fil
Fil: Gianni, Guido Martin. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Juan; Argentina. Universidad Nacional de San Juan. Facultad de Ciencias Exactas, Físicas y Naturales. Instituto Geofísico Sismológico Volponi; Argentina  
dc.description.fil
Fil: Ballivian Justiniano, Carlos Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Geociencias Básicas, Aplicadas y Ambientales de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Geociencias Básicas, Aplicadas y Ambientales de Buenos Aires; Argentina  
dc.description.fil
Fil: Garcia, Hector Pedro Antonio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Juan; Argentina. Universidad Nacional de San Juan. Facultad de Ciencias Exactas, Físicas y Naturales. Instituto Geofísico Sismológico Volponi; Argentina  
dc.description.fil
Fil: Wohnlich, Stefan. Ruhr Universität Bochum; Alemania  
dc.journal.title
Geophysical Journal International  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/gji/advance-article/doi/10.1093/gji/ggac161/6573870  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1093/gji/ggac161