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ALTERNATING CONTRACTION AND EXTENSION IN THE SOUTHERN CENTRAL ANDES (35 degrees-37 degrees S)
(2019)
The Andes are thought to be formed through discrete contractional stages separated by periods of little to no orogenic construction. This paper analyzes the intervals between the main contractional phases that built the ...
Late Eocene volcanism in North Patagonia (42°30′–43°S): Arc resumption after a stage of within-plate magmatism
(Pergamon-Elsevier Science Ltd, 2018-01)
Mid-Cenozoic widespread arc magmatism in North Patagonia extends from the forearc to the retroarc zones, representing an anomalous large volume when compared to the present-day arc zone and even other past arc configurations. ...
Alternating contraction and extension in the southern central andes (35°-37°s)
(Amer Journal Science, 2019-05)
The Andes are thought to be formed through discrete contractional stages separated by periods of little to no orogenic construction. This paper analyzes the intervals between the main contractional phases that built the ...
Basic magmatism in northeastern Puna, Argentina: Chemical composition and tectonic setting in the Ordovician back-arc
(Pergamon-Elsevier Science Ltd, 2009-12)
Two main groups of basic rocks, representative of the bimodal Ordovician magmatism of the northeastern Puna (22-24°S, 66°30'-65°40'W) were revisited on the basis of new geological, petrographic and geochemical data. One ...
Jurassic extensional tectono-magmatism and associated mineralization of the El Faldeo polymetallic district, Chilean Patagonia: geochemical and isotopic evidence of crustal contribution
(1997)
The El Faldeo is the southernmost Andean
mineral district and consists of Paleozoic polymeta-
morphic basement unconformably overlain by a 200 m
thick homoclinal sequence of sedimentary and felsic
volcanic beds of the ...
The Iglesia basin in the southern Central Andes: A record of backarc extension before wedge-top deposition in a foreland basin
(Elsevier Science, 2020-10)
The Iglesia basin hosts a key sedimentary archive of the evolution of the southern Central Andes. This basin is classically interpreted as recording the transition from an outer- to an inner-wedge-top (piggyback basin) ...
Tectonic and climate driven fluctuations in the stratigraphic base level of a Cenozoic continental coal basin, northwestern Andes
(PERGAMON-ELSEVIER SCIENCE LTD, 2008-12-01)
Changes in the sedimentologic and stratigraphic characteristics of the coal-bearing middle Oligocene-late Miocene siliciclastic Amagá Formation, northwestern Colombia, reflect major fluctuations in the stratigraphic base ...
Tectonic evolution of the North Patagonian Andes from field and gravity data (39-40°S)
(Elsevier, 2014-01)
This paper analyzes the style, distribution, mechanics and timing of deformation of the Andean retroarc zone between 39° and 40°S, in the North Patagonian Andes. Field recognition and interpretation of the main structures, ...