Download Impact Craters in South America by Rogelio Daniel Acevedo PDF

By Rogelio Daniel Acevedo

A entire and up to date catalogue of influence craters and constructions in South the USA from 2014 is gifted the following. nearly 80 confirmed, suspected and disproven constructions were pointed out through numerous assets during this continent. all of the influence websites of this massive continent were exhaustively reviewed: the proved ones, the potential ones and a few very uncertain. Many websites stay and not using a transparent geological "in situ" affirmation and a few of them should be even rejected. Argentina and Brazil are major the checklist containing nearly every thing detected. In Bolivia, Chile, Colombia, Guyana, Paraguay, Perú, Uruguay and Venezuela just a couple of have been saw. purely Ecuador is watching for new discoveries. to this point, the biggest good acknowledged influence web site remains to be the Araguainha constitution in Brazil with its forty kilometers in diameter. even if, attainable effect buildings are better than Araguainha: Malvinas, (with 250 kilometers in diameter) and Vichada in Colombia, (50 kilometers). This learn additionally studies the lifestyles of a few Tertiary-Quaternary glassy impactite layers: the "escorias" and "tierras cocidas" of the pampas in Argentina.

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IV. 24 Ma. Reported Impact craters/structures in the area. 1 La Dulce (38° 14′ S, 59° 12′ W) Examination of remote sensing data led to the identification of a conspicuous circular structure near the village of La Dulce, Province of Buenos Aires, as a possible source impact crater for one of the above-mentioned layers (Fig. 30). 8 km in diameter and it could be classified as a simple-type impact Fig. 30 La Dulce. Credit © 2013 Inav/Geosistemas SRL, Image © 2014 DigitalGlobe 34 2 Argentina crater. A steep cliff-lined rim bounds the La Dulce crater on its eastern and southern sides.

J Afr Earth Sc 93 (2014):57–175 Reimold WU, Koeberl C (2014b) Reply to “Comment on impact structures in Africa: a review (Short Note)” by Acevedo, RD et al. J Afr Earth Sci 100:757–758 Rocca MCL (2003a) Potential new impact sites in Patagonia, Argentina, South America. Meteorit Planet Sci (MAPS) 38(7):A9 Rocca MCL (2003b) Los Mellizos: A potential impact structure in Santa Cruz, Patagonia, South America. In: Poster/abstract n°4003: third international conference on large meteorite impacts. August 5–7, Noerdlingen, Germany Rocca MCL (2003c) Bajo Hondo, a very puzzling crater in Chubut, Patagonia, Argentina.

A possible large Carboniferous–Permian impact crater site could be present in the region. A 200 km in diameter, circular Bouguer gravity anomaly has been reported in the South Atlantic Ocean, to the northwest of the Malvinas/Falklands archipelago (Fig. 19). It has been interpreted as a large Late Paleozoic impact site (Rampino 1992a, b). A circular structure, of a very large diameter, is located in the ocean floor, a few kilometers offshore to the northwest of the Gran Malvina Island and it is covered by younger sediments.

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