A refreshing 3D view of an ancient sediment collapse and slope failure
Huvenne, V.A.I., Croker, P.F. and Henriet, J.P. (2002) A refreshing 3D view of an ancient sediment collapse and slope failure. Terra Nova, 14, (1), 33-40.
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Description/Abstract
The combined analysis of high-resolution 2D seismics and an industrial 3D seismic data volume from the western Porcupine Basin, offshore SW Ireland, revealed an unusual picture of a buried sediment collapse and slope failure. A proportionally thin (≤ 85 m) but vast (> 750 km2) slab of consolidated sediments started to slide downslope, in the meantime breaking into hundreds of vertically undisturbed blocks, up to 500 m in diameter. The most probably overpressured underlying horizon seems to have liquefied and acted as a slide plane until the excess pore pressure had dissipated. Then – still very early in the slide development – the process stopped, freezing the failure at its initial stage.
| Item Type: | Article |
|---|---|
| ISSN: | 0954-4879 (print) |
| Related URLs: | http://www.swetswise.com/eAcce...D=22549036 |
| Subjects: | G Geography. Anthropology. Recreation > GA Mathematical geography. Cartography Q Science > QE Geology |
| Divisions: | University Structure - Pre August 2011 > National Oceanography Centre (NERC) |
| ePrint ID: | 41824 |
| URI: | http://eprints.soton.ac.uk/id/eprint/41824 |
| Deposited On: | 05 Oct 2006 |
| Last Modified: | 01 Jun 2011 05:33 |
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