Sediment drifts and deep-sea channel systems, Antarctic Peninsula Pacific Margin
Rebesco, M.; Pudsey, C.J.; Canals, M.; Camerlenghi, A.; Barker, R.R.; Estrada, R.; Giorgetti, A. (2002). Sediment drifts and deep-sea channel systems, Antarctic Peninsula Pacific Margin, in: Stow, D.A.V. et al. Deep-water contourite systems: Modern drifts and ancient series, seismic and sedimentary characteristics. Geological Society Memoir, 22: pp. 353-371. https://dx.doi.org/10.1144/GSL.MEM.2002.022.01.25 In: Stow, D.A.V. et al. (Ed.) (2002). Deep-water contourite systems: Modern drifts and ancient series, seismic and sedimentary characteristics. Geological Society Memoir, 22. The Geological Society: London. ISBN 1-86239-092-4. vi, 464 pp., more In: Geological Society Memoir. Geological Society: London. ISSN 0435-4052; e-ISSN 2041-4722, more |
| Authors | | Top | Datasets | - Rebesco, M.
- Pudsey, C.J.
- Canals, M.
- Camerlenghi, A.
| - Barker, R.R.
- Estrada, R.
- Giorgetti, A.
| |
| Abstract | Twelve sedimentary mounds are identified on the upper continental rise of the Pacific Margin of the Antarctic Peninsula. All these mounds are produced by a varying degree of interaction of along-slope bottom water flow with down-slope turbidity currents. These mounds provide a complete range of intermediates between two end members: the sediment drift and the channel levee. Surface sediments on drift 7 suggest that the mechanisms for the supply and transport of sediment include entrainment of material from turbidity currents within ambient bottom currents, and pelagic settling from the sea surface, including biogenic and glacially derived material. The long-lasting activity of these mechanisms is documented by the data provided by four DSDP and ODP drill sites. Bathymetric and seismic data, both at a large, comprehensive scale and at a small, detailed scale, show the geometry of the sedimentary mounds and their relationships with the adjacent turbidity current channel systems. These data allow the determination of some diagnostic criteria to identify the sediment drifts. |
| Datasets (2) | - Flanders Marine Institute; Renard Centre of Marine Geology - Ugent (2018). Global contourite distribution database, version 2. Available online at https://www.marineregions.org, more
- Flanders Marine Institute; Renard Centre of Marine Geology - Ugent (2019). Global contourite distribution database, version 3. Available online at https://www.marineregions.org, more
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