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Cenozoic arc-related magmatism in the southern Central and North Patagonian Andes
(Elsevier, 2019)
Variable geodynamic contexts have been registered throughout the Cenozoic in the southern Central and North Patagonian Andes. Significantly, these geodynamic changes have controlled the development of arc-related volcanism, ...
Puna (Argentina) and northern Chile Ordovician basic magmatism: A contribution to the tectonic setting
(Pergamon-Elsevier Science Ltd, 2009-02)
Geochemical characteristics of Ordovician basic volcanic rocks help to define the evolving tectonic setting of the Argentine Puna and northern Chile. Four spatially distinct magmatic groups are defined on geological, ...
Magnitude, timing, and rate of slip along the Atacama fault system, northern Chile: implications for Early Cretaceous slip partitioning and plate convergence
(GEOLOGICAL SOC PUBL HOUSE, 2021)
Displacement estimates along the Atacama fault system (AFS), a crustal-scale sinistral structure that accommodated oblique convergence in the Mesozoic Coastal Cordillera arc, vary widely due to a lack of piercing points. ...
Subduction zone fluids and arc magmas conducted by lithospheric deformed regions beneath the central Andes
(Nature, 2021)
Dehydration of the oceanic subducting slab promotes the formation of magmatic arcs, intra-slab intermediate-depth seismicity, and hydration of the overlying mantle wedge. However, the complex permeability structure of the ...
Mesoproterozoic rapakivi granites of the Rondonia Tin Province, southwestern border of the Amazonian craton, Brazil - I. Reconnaissance U-Pb geochronology and regional implications
(Elsevier B.V., 1999-04-30)
Rapakivi granites and associated mafic and ultramafic rocks in the Rondonia Tin Province, southwestern Amazonian craton, Brazil were emplaced during six discrete episodes of magmatism between ca 1600 and 970 Ma. The seven ...
Crustal intrusion beneath the Louisville hotspot track
(ELSEVIER, 2010)
We report here the first detailed 2D tomographic image of the crust and upper mantle structure of a
Cretaceous seamount that formed during the interaction of the Pacific plate and the Louisville hotspot.
Results show ...
Evolution of Eocene to Oligocene arc-related volcanism in the North Patagonian Andes (39-41°S), prior to the break-up of the Farallon plate
(Elsevier Science, 2017-01)
Voluminous Paleogene magmatic rocks (44 to 29 Ma) are found in a retroarc position in the Northern Patagonian to Southern Central Andes (~ 39–42°S), whose origin remains controversial. Geochemical data in these Eocene to ...
Sinistral shear during Middle Jurassic emplacement of the Matancilla Plutonic Complex in northern Chile (25.4° S) as evidence of oblique plate convergence during the early Andean orogeny
(Elsevier Ltd, 2022)
© 2022Arc magmatism in a continental subduction zone facilitates rheological weakening of the rigid upper plate, and can accommodate the partitioned trench-parallel component of oblique subduction into an intra-arc shear ...