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Impact Craters in South America. 2015 ed.

Impact Craters in South America. 2015 ed.

・ISBN 978-3-319-13092-7 paper EUR 49.99

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お気に入り
著者・編者Acevedo, Rogelio Daniel / Rocca, Maximiliano C. L. / Ponce, Juan Federico / Stinco, Sergio G.,
シリーズ (SpringerBriefs in Earth System Sciences)
出版社 (Springer International Publishing AG, SZ)
出版年月2015
ページ数104 pp.
言語ENG
ニュース番号<A05-23756>

解説

A complete and updated catalogue of impact craters and structures in South America from 2014 is presented here. Approximately eighty proven, suspected and disproven structures have been identified by several sources in this continent. All the impact sites of this large continent have been exhaustively reviewed: the proved ones, the possible ones and some very doubtful. Many sites remain without a clear geological "in situ" confirmation and some of them could be even rejected. Argentina and Brazil are leading the list containing almost everything detected. In Bolivia, Chile, Colombia, Guyana, Paraguay, Peru, Uruguay and Venezuela only a few were observed. Only Ecuador is waiting for new discoveries. So far, the largest well stated impact site is still the Araguainha structure in Brazil with its 40 kilometers in diameter. However, two possible impact structures are larger than Araguainha: Malvinas, (with 250 kilometers in diameter) and Vichada in Colombia, (50 kilometers). This study also reports the existence of some Tertiary-Quaternary glassy impactite layers: the "escorias" and "tierras cocidas" of the pampas in Argentina.