INVESTIGADORES
PONCE Juan Federico
artículos
Título:
Circular structures of Bajada del Diablo (Argentina): Geophysical signatures
Autor/es:
PREZZI, C.; ORGEIRA, M. J.; MARTINEZ, O.; ACEVEDO, R.D.; PONCE, J.F.; GOLDMAN, G.; MAGNERES, I.; RABASSA, J. O.
Revista:
GEOPHYSICAL JOURNAL INTERNATIONAL
Editorial:
WILEY-BLACKWELL PUBLISHING, INC
Referencias:
Lugar: Londres; Año: 2016
ISSN:
0956-540X
Resumen:
Bajada del Diablo is located in the Northern Patagonian Massif, Chubut, Argentina. The study area includes several circular structures found in Miocene olivine basalts of the Qui?nelaf Eruptive Complex and in the Late Pliocene/Early Pleistocene Pampa Sastre conglomerates. An impact origin has been proposed for these circular structures.With the aim of further investigate the proposed impact origin, topographic, gravimetric, magnetic, resistivity, palaeomagnetic and electromagnetic surveys in two circular structures (?8? and ?G?) located in Pampa Sastre conglomerates and in basalts of the Qui?nelaf Eruptive Complex were carried out. The new geophysical results support the hypothesis of an impact origin. However, the confirmation of such an origin through the findings of shock metamorphism evidences and/or the recovery of meteorites remains elusive.
