Cross-strike structures controlling magmatism emplacement in a flat-slab setting (Precordillera, Central Andes of Argentina)
Detailed structural, kinematic and geophysical data on the foreland of the Pampean flatslab segment (Hualilán area, Andean Precordillera of Argentina) have shown that cross-strike structures have had an important role in the evolution of this Andean segment since Miocene times. These structures repr...
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| Autores principales: | , , |
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2014
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03058719_v394_n1_p113_Oriolo http://hdl.handle.net/20.500.12110/paper_03058719_v394_n1_p113_Oriolo |
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| Sumario: | Detailed structural, kinematic and geophysical data on the foreland of the Pampean flatslab segment (Hualilán area, Andean Precordillera of Argentina) have shown that cross-strike structures have had an important role in the evolution of this Andean segment since Miocene times. These structures represent pre-existing crustal fabrics reactivated during the Andean orogeny and could have controlled the emplacement of the Miocene arc-magmatism migrating into foreland due to the flattening of the slab. Likewise, kinematic results obtained for these structures support a similar stress frame to that obtained elsewhere in the Precordillera but showing different motions as a consequence of their high obliquity to the orogen trend. Moreover, they record a reorientation of kinematic axes during Late Miocene-Pliocene times. © The Geological Society of London 2014. |
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