Possible sources for monogenetic Pliocene–Quaternary basaltic volcanism in northern Patagonia

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Possible sources for monogenetic Pliocene–Quaternary basaltic volcanism in northern Patagonia

Massaferro, Gabriela Isabel et al · Elsevier · 2014

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Autore / responsabile

Massaferro, Gabriela Isabel et al

Editore

Elsevier

Anno

2014

ISSN

0895-9811

ISSN

0895-9811

Lingua

Inglés

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The Pliocene- Quaternary times in Extra-Andean Patagonia are characterized by the effusion of intraplate basalts. This work is focused on those basalts outcropping between 40° and 46°S. The age of this volcanism varies between 0.23 and 5 Ma. Based on the general geochemical characteristics, geographic distribution, and structural framework of the region, we propose that the basalts originated in response to the back arc extension that caused the thinning, doming and fracturing of the lithosphere, and extrusion of mafic magmas with a relatively primitive nature and OIB-like compositions. The geochemical characteristics allow to distinguish three types of basalts: basanites, alkaline basalts and tholeiitic basalts, each one representing different sources and percentages of partial melt and implying a heterogeneous source. A source with these characteristics could be the lithospheric mantle. Fil: Massaferro, Gabriela Isabel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico; Argentina. Universidad Nacional de la Patagonia; Argentina Fil: Haller, Miguel Jorge F.. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico; Argentina. Universidad Nacional de la Patagonia; Argentina

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APA 7

Massaferro, G. I. E. A. (2014). Possible sources for monogenetic Pliocene–Quaternary basaltic volcanism in northern Patagonia. http://hdl.handle.net/11336/24410

MLA

Massaferro, Gabriela Isabel et al. "Possible sources for monogenetic Pliocene–Quaternary basaltic volcanism in northern Patagonia." 2014. http://hdl.handle.net/11336/24410.

Chicago

Massaferro, Gabriela Isabel et al. 2014. "Possible sources for monogenetic Pliocene–Quaternary basaltic volcanism in northern Patagonia.". http://hdl.handle.net/11336/24410.

Harvard

Massaferro, G. I. E. A. 2014, Possible sources for monogenetic Pliocene–Quaternary basaltic volcanism in northern Patagonia, Elsevier, available at: http://hdl.handle.net/11336/24410 [Accessed 8 Aug. 2026].

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Titolo: Possible sources for monogenetic Pliocene–Quaternary basaltic volcanism in northern Patagonia

Autore / collaboratori: Massaferro, Gabriela Isabel et al

Editore: Elsevier

Anno di pubblicazione: 2014

ISSN: 0895-9811

ISSN: 0895-9811

Lingua: Inglés

Soggetti

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Basaltic Volcanism; Patagonia; Petrology; Quaternary; https://purl.org/becyt/ford/1.5; https://purl.org/becyt/ford/1