| Abstract: | The late Cenozoic volcanic and tectonic activity of the enigmatic West Antarctic rift system, the least understood of the great active continental rifts, has been suggested to be plume driven. In 1991-1992, as part of the CASERTZ (Corridor Aerogeophysics of the Southeast Ross Transect Zone) program, an ~25 000 km aeromagnetic survey over the ice-covered Byrd subglacial basin shows magnetic "texture‘ critical to interpretations of the underlying extended volcanic terrane. The aeromagnetic data reveal numerous semicircular anomalies ~100-1100 nT in amplitude, interpreted as having volcanic sources at the base of the ice sheet; they are concentrated along north-trending magnetic lineations interpreted as rift fabric. The CASERTZ aeromagnetic results, combined with >100 000 km of widely spaced aeromagnetic profiles, indicate at least 106 km3 of probable late Cenozoic volcanic rock (flood basalt?) in the West Antarctic rift beneath the ice sheet and Ross Ice Shelf. -from Authors |
| Genre: | Article |
| ProdID: | 70018036 |
| Citation Author: | Behrendt, J. C. |
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| Citation End Page: | 530 |
| Citation Issue: | 6 |
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| Citation Language: | English |
| Citation Larger Work Title: | Geology |
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| Citation Number Of Pages: | 4 |
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| Citation Search Results Text: | CASERTZ aeromagnetic data reveal late Cenozoic flood basalts (?) in the West Antarctic rift system; 1994; Article; Journal; Geology; Behrendt, J. C. |
| Citation Start Page: | 527 |
| Citation Volume: | 22 |
| Citation Year: | 1994 |
| Type: | citation/reference |
| Text: | CASERTZ aeromagnetic data reveal late Cenozoic flood basalts (?) in the West Antarctic rift system; 1994; Article; Journal; Geology; Behrendt, J. C. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| Date Other: | Sat, 1 Jan 1994 00:00 -0600 |
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