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Unravelling the collapse mechanisms at a Jurassic caldera of the Chon Aike silicic LIP in Southern Patagonia (47° 15 'S, 71° 40'W), Argentina

2008; IOP Publishing; Volume: 3; Linguagem: Inglês

10.1088/1755-1307/3/1/012010

1755-1307

Patricia Sruoga, Silvia Japas, Flavia M. Salani, Laura E. Kleiman, M Graffigna,

Geochemistry and Geologic Mapping

La Peligrosa Caldera is located at Sierra Colorada (47° 15'S, 71° 40' W) in the Chon-Aike silicic LIP. It represents an unique window to understand the eruptive mechanisms that prevailed throughout the ignimbritic flare-up in Southern Patagonia during middle to late Jurassic times. Key pieces of lithologic and structural evidences are taken into account to reconstruct the volcanic structure.