INVESTIGADORES
SRUOGA Patricia
congresos y reuniones científicas
Título:
la Peligrosa Caldera: a piecemeal transtensional structure in the Jurassic Chon-Aike silicic LIP of Southern Patagonia (47° 15´S), Argentina
Autor/es:
PATRICIA SRUOGA; SILVIA JAPAS; FLAVIA SALANI; LAURA KLEIMAN
Lugar:
Rekjavik, Islandia
Reunión:
Congreso; IAVCEI General Assembly; 2008
Institución organizadora:
International Association of Volcanology and Chemistry of the Earth Interior
Resumen:
La Peligrosa Caldera is located at Sierra Colorada (47º 15´S, 69° 20´W) in the Chon-Aike silicic LIP which has an estimated volume of 235.000 km3 Middle to Late Jurassic in age (188-153 Ma) this long-lived and widespread volcanism took place in Patagonia along the western margin of Gondwanaland. Remarkably homogeneous in composition, it is dominated by voluminous ignimbritic plateaux, with granites, lava domes, minor intermediate lavas and epiclastic tuffs. However, collapse-calderas have been exceptionally recognized. La Peligrosa Caldera represents an unique window to understand the eruptive mechanisms which prevailed during the ignimbritic flare-up in Southern Patagonia during middle to late Jurassic times.
