Emplacement and temporal constraints of the Gondwanan intrusive complexes of northern Patagonia: La Esperanza plutono-volcanic case
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Martinez Dopico, Carmen I; Lopez de Luchi, Mónica G; Rapalini, A.E.; Wemmer, Klaus; Fanning, Christopher Mark; Basei, Miguel Angelo Stipp
Description
Two main lines of evidence disagree whether or not the Patagonian blocks collided with Gondwana. All models invoke the voluminous magmatism of the La Esperanza Complex as evidence for active subduction magmatic arc or to a postcollisional setting. The evolution of this bimodal igneous suite is reassessed with field, geochronological (SHRIMP U-Pb zircon and K-Ar mica) and petrophysical data. Emplacement of high-K calk-alkaline granitic magmas occurred at shallow crustal levels (2-8 +/- 2 km...[Show more]
Collections | ANU Research Publications |
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Date published: | 2017-08-21 |
Type: | Journal article |
URI: | http://hdl.handle.net/1885/202769 |
Source: | Tectonophysics |
DOI: | 10.1016/j.tecto.2017.05.015 |
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01_Martinez+Dopico_Emplacement_and_temporal_2017.pdf | 5.9 MB | Adobe PDF | Request a copy |
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