Artículo

Prezzi, C.B.; Orgeira, M.J.; Martinez, O.; Acevedo, R.D.; Ponce, F.; Goldmann, G.; Magneres, I.; Rabassa, J. "Circular structures of Bajada del Diablo (Argentina): Geophysical signatures" (2016) Geophysical Journal International. 205(2):876-899
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Abstract:

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 Quiñelaf 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 Quiñelaf 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. © The Authors 2016.

Registro:

Documento: Artículo
Título:Circular structures of Bajada del Diablo (Argentina): Geophysical signatures
Autor:Prezzi, C.B.; Orgeira, M.J.; Martinez, O.; Acevedo, R.D.; Ponce, F.; Goldmann, G.; Magneres, I.; Rabassa, J.
Filiación:CONICET -Universidad de Buenos Aires. IGeBA, Dpto. de Cs. Geológicas, FCEyN, UBA. Ciudad Universitaria, Pabellón 2, C.A.B.A, 1428, Argentina
Universidad Nacional de la Patagonia San Juan Bosco. Esquel, Pcía. de Chubut, Argentina
CONICET. CADIC. Ushuaia, Pcía. de Tierra del Fuego, Argentina
ANPCyT. IGeBA, Dpto. de Cs. Geológicas, FCEyN, UBA. Ciudad Universitaria, Pabellón 2, C.A.B.A, 1428, Argentina
Palabras clave:Gravity anomalies and Earth structure; Magnetic anomalies: modelling and interpretation; Palaeomagnetism applied to geological processes; South america; Basalt; Geomagnetism; Geophysics; Silicate minerals; Circular structures; Electromagnetic surveys; Geological process; Gravity anomalies and Earth structures; Late Pliocene; Magnetic anomalies: modelling and interpretations; Olivine basalts; South America; Structural geology; basalt; conglomerate; data interpretation; Earth structure; geophysical survey; gravity anomaly; magnetic anomaly; meteorite; olivine; paleomagnetism; shock metamorphism; Argentina; Atlantic Ocean; Chubut; Patagonian Shelf
Año:2016
Volumen:205
Número:2
Página de inicio:876
Página de fin:899
DOI: http://dx.doi.org/10.1093/gji/ggw053
Título revista:Geophysical Journal International
Título revista abreviado:Geophys. J. Int.
ISSN:0956540X
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0956540X_v205_n2_p876_Prezzi

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Citas:

---------- APA ----------
Prezzi, C.B., Orgeira, M.J., Martinez, O., Acevedo, R.D., Ponce, F., Goldmann, G., Magneres, I.,..., Rabassa, J. (2016) . Circular structures of Bajada del Diablo (Argentina): Geophysical signatures. Geophysical Journal International, 205(2), 876-899.
http://dx.doi.org/10.1093/gji/ggw053
---------- CHICAGO ----------
Prezzi, C.B., Orgeira, M.J., Martinez, O., Acevedo, R.D., Ponce, F., Goldmann, G., et al. "Circular structures of Bajada del Diablo (Argentina): Geophysical signatures" . Geophysical Journal International 205, no. 2 (2016) : 876-899.
http://dx.doi.org/10.1093/gji/ggw053
---------- MLA ----------
Prezzi, C.B., Orgeira, M.J., Martinez, O., Acevedo, R.D., Ponce, F., Goldmann, G., et al. "Circular structures of Bajada del Diablo (Argentina): Geophysical signatures" . Geophysical Journal International, vol. 205, no. 2, 2016, pp. 876-899.
http://dx.doi.org/10.1093/gji/ggw053
---------- VANCOUVER ----------
Prezzi, C.B., Orgeira, M.J., Martinez, O., Acevedo, R.D., Ponce, F., Goldmann, G., et al. Circular structures of Bajada del Diablo (Argentina): Geophysical signatures. Geophys. J. Int. 2016;205(2):876-899.
http://dx.doi.org/10.1093/gji/ggw053