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Título: | Physical and Geotechnical Properties and Assessment of Sediment Stability on the Continental Slope and Basin of the Bransfield Basin (Antarctica Peninsula) |
Autor: | Casas, David CSIC ORCID ; Ercilla, Gemma CSIC ORCID ; Estrada, Ferran CSIC ORCID CVN ; Baraza, Jesús CSIC; Alonso, Belén CSIC ORCID ; Lee, Homa J.; Kayen, Robert E.; Chiocci, Francesco L. | Fecha de publicación: | sep-2004 | Editor: | Taylor & Francis | Citación: | Marine Georesources and Geotechnology 22(4): 253-278 (2004) | Resumen: | Our investigation is centred on the continental slope of the Antarctic Peninsula and adjacent basin. Type of sediments, sedimentary stratigraphy, and physical and geotechnical characterization of the sediments have been integrated. Four different types of sediments have been defined: diamictons, silty and muddy turbidites, muddy, silty and muddy matrix embedded clast contourites. There is a close correspondence between the physical properties (density, magnetic susceptibility and p-wave velocity) and the texture and/or fabric as laminations and stratification. From a quantitative point of view, only a few statistical correlations between textural and physical properties have been found. Within the geotechnical properties, only water content is most influenced by texture. This slope, with a maximum gradient observed (20°), is stable, according to the stability under gravitational loading concepts, and the maximum stable slope that would range from 22° to 29°. Nevertheless, different instability features have been observed. Volcanic activity, bottom currents, glacial loading-unloading or earthquakes can be considered as potential mechanisms to induce instability in this area. Copyright © Taylor & Francis Inc. | Descripción: | 26 pages, 14 figures, 3 tables | Versión del editor: | https://doi.org/10.1080/10641190490900853 | URI: | http://hdl.handle.net/10261/134970 | DOI: | 10.1080/10641190490900853 | Identificadores: | issn: 1064-119X e-issn: 1521-0618 |
Aparece en las colecciones: | (ICM) Artículos |
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