Low temperature thermal history and denudation along the Liquiñe-Ofqui Fault Zone in the southern Chilean Andes, 41-42°S

  • Fission track (FT) thermochronology of zircon and apatite combined with structural analyses on deformed rocks was applied to investigate the cooling and denudation history of the Southern Chilean Andes at 41°-42°S in relation to the late Cenozoic activity of the Liquiñe-Ofqui Fault Zone (LOFZ). At the Main Range, three different types of intrusives of the North Patagonian Batholith were characterized by their cooling histories: (a) Cretaceous intrusions in the upper crust with rapid initial cooling after emplacement, followed by slow cooling and rapid exhumation along the LOFZ in the late Miocene-Pliocene, (b) Cretaceous to Early Miocene deep intrusions, with steady cooling rates during the Miocene, denuded along the LOFZ in the Late Miocene-Pliocene, (c) Miocene shallow intrusions, distributed over the batholith, and with younger ages towards the LOFZ. The denudation episode is coeval to the arrival and subduction of the Chile Rise beneath the Taitao Peninsula.

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Metadaten
Author:Alberto Adriasola MuñozGND
URN:urn:nbn:de:hbz:294-11509
Referee:Bernhard StöckhertGND, Michael AlberGND
Document Type:Doctoral Thesis
Language:English
Date of Publication (online):2004/10/21
Date of first Publication:2004/10/21
Publishing Institution:Ruhr-Universität Bochum, Universitätsbibliothek
Granting Institution:Ruhr-Universität Bochum, Fakultät für Geowissenschaften
Date of final exam:2003/12/18
Creating Corporation:Fakultät für Geowissenschaften
GND-Keyword:Kernspaltspurenmethode; Anden (Süd); Mikrostruktur; Plutonismus; Denudation
Dewey Decimal Classification:Naturwissenschaften und Mathematik / Geowissenschaften, Geologie
faculties:Fakultät für Geowissenschaften
Licence (German):License LogoKeine Creative Commons Lizenz - es gelten der Veröffentlichungsvertrag und das deutsche Urheberrecht

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