Title: Geophysical characteristics of four possible impact structures in the Parnaíba Basin, Brazil: Comparison and implications
Abstract:The Phanerozoic Parnaíba sedimentary basin in the north-northeastern region of Brazil covers an area of ~400,000 km2 and contains a number of circular structures, four of which are of possible impact ...The Phanerozoic Parnaíba sedimentary basin in the north-northeastern region of Brazil covers an area of ~400,000 km2 and contains a number of circular structures, four of which are of possible impact origin: Serra da Cangalha, Santa Marta, Riachão, and São Miguel do Tapuio. All four exhibit a central morphological feature resembling a central uplift, characteristic of complex impact structures. A recently acquired regional aerogeophysical survey provided magnetic and gravity data for the entire basin. The magnetic and gravity characteristics of the four possible impact structures of the Parnaíba Basin were analyzed in comparison with impact structures elsewhere in the...Read More
Publication Year: 2010
Publication Date: 2010-01-01
Language: en
Type: book-chapter
Indexed In: ['crossref']
Access and Citation
Cited By Count: 14
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