Bajada del Diablo impact crater-strewn field (Argentine): ground magnetic and electromagnetic surveys.

PREZZI, CLAUDIA BEATRIZ; MARÍA JULIA ORGEIRA; ACEVEDO, ROGELIO; PONCE, FEDERICO; MARTÍNEZ, OSCAR; VÁSQUEZ, CARLOS; CORBELLA, HUGO; GONZÁLEZ, MAURICIO; RABASSA, JORGE

BOLLETTINO DI GEOFISICA TEORICA ED APPLICATA

ISTITUTO NAZIONALE DI OCEANOGRAFIA E DI GEOFISICA

Lugar: Trieste; Año: 2010 vol. 51 p. 121 - 124

0006-6729

Bajada del Diablo impact crater field is located in the Northern Patagonian Massif, Chubut, Argentina. Impact craters have been identified on two rock types: the Quiñelaf Eruptive Complex and Pampa Sastre Formation. Most of the rocks forming the Quiñelaf Eruptive Complex have been classified as trachytes, but other rocks are present, such as rhyolites, trachyandesites, trachybasalts, and pyroclastic rocks. Pampa Sastre Formation corresponds to conglomerate layers with basalt clasts boulder and blocks in size (up to 50 cm in diameter) in a coarse sandy matrix. The study area includes at least 66 impact craters found in Miocene olivine basalts of the Quiñelaf Eruptive Complex and in the Late Pliocene/Early Pleistocene Pampa Sastre conglomerate.