Abstract:
Sediments cores collected aboard the RRS James Clark Ross (JR104) in the Bellingshausen Sea, 2004.
This work was carried out as part of the first systematic investigation of the former ice drainage basin in the southern Bellingshausen Sea. Reconnaissance data collected on previous cruises JR04 (1993) and cruises of R/V Polarstern in 1994 and 1995 suggested that this area contained the outlet of a very large ice drainage basin during late Quaternary glacial periods. The data and samples collected allowed us to address questions about the timing and rate of grounding line retreat from the continental shelf, the dynamic character of the ice that covered the shelf, and its influence on glaciomarine processes on the adjacent continental slope.
Keywords:
West Antarctic Ice Sheet, drumlins, glacial lineations, glacial trough, glaciogenic debris flow deposits, glaciomarine, grounding line retreat, grounding-zone wedges, ice drainage basin, ice sheet bed, palaeo-ice stream, sediment cores, sedimentary sequences, trough mouth fan
| Access Constraints: | Requests for data can be made via the UK Polar Data Centre (UK PDC) at BAS. |
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| Creation Date: | 2007-08-10 |
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| Dataset Progress: | Complete |
| Dataset Language: | English |
| ISO Topic Categories: |
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| Parameters: |
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| Personnel: | |
| Name | UK PDC |
| Role(s) | Metadata Author |
| Organisation | British Antarctic Survey |
| Name | Dr Sara Benetti |
| Role(s) | Investigator |
| Organisation | British Antarctic Survey |
| Name | Prof Julian Dowdeswell |
| Role(s) | Investigator |
| Organisation | Scott Polar Research Institute |
| Name | Dr Alastair Graham |
| Role(s) | Investigator |
| Organisation | British Antarctic Survey |
| Name | Dr Claus-Dieter Hillenbrand |
| Role(s) | Investigator |
| Organisation | British Antarctic Survey |
| Name | Dr Rob Larter |
| Role(s) | Investigator |
| Organisation | British Antarctic Survey |
| Name | Dr Peter Morris |
| Role(s) | Investigator |
| Organisation | British Antarctic Survey |
| Name | Dr Carol Pudsey |
| Role(s) | Investigator |
| Organisation | British Antarctic Survey |
| Name | Dr Riko Noormets |
| Role(s) | Investigator |
| Organisation | Scott Polar Research Institute |
| Name | Prof Colm O Cofaigh |
| Role(s) | Investigator |
| Organisation | Durham University |
| Parent Dataset: | N/A |
| Reference: | GRAHAM, A.G.C., NITSCHE, F.O. & LARTER, R.D. 2011. An improved bathymetry compilation for the Bellingshausen Sea, Antarctica, to inform ice-sheet and ocean models. The Cryosphere, 5, 95-106. HILLENBRAND, C.-D., LARTER, R.D., DOWDESWELL, J.A., EHRMANN, W., O COFAIGH, C., BENETTI, S., GRAHAM, A. & GROBE, H. 2010. The sedimentary legacy of a palaeo-ice stream on the shelf of the southern Bellingshausen Sea: A clue to West Antarctic glacial history during the Late Quaternary. Quaternary Science Reviews, 29, 2741-2763. HILLENBRAND, C.-D., EHRMANN, W., LARTER, R.D., BENETTI, S., DOWDESWELL, J.A., O COFAIGH, C., GRAHAM, A.G.C. & GROBE, H. 2009. Provenance of subglacial and glaciomarine sediments in the southern Bellingshausen Sea reveals changes in the drainage pattern of the West Antarctic Ice Sheet. Marine Geology, 265, 1-18. Noormets, R., Dowdeswell, J.A., Larter, R.D., O Cofaigh, C., Evans, J. 2009. Morphology of the upper continental slope in the Bellingshausen and Amundsen Seas -implications for sedimentary processes at the shelf edge of West Antarctica., Marine Geology. 258, 100-114 Dowdeswell, J.A., Ó Cofaigh, C., Noormets, R., Larter, R.D., Hillenbrand, C-D., Benetti, S., Evans, J., Pudsey, C.J. 2008. A major trough mouth fan on the continental margin of the Bellingshausen Sea West Anarctica: the Belgica Fan., Marine Geology. 252,129-140. Hillenbrand, C-D.,Moreton, S.G., Caburlotto, A., Pudsey, C.J., Lucchi, R.G., Smellie, J.L., Benetti, S., Grobe, H., Hunt, J., Larter, R. 2008. Volcanic time-markers for marine isotopic stages 6 and 5 in Southern Ocean sediments and Antarctic ice cores:implication for tephra correlations between palaeoclimatic records., Quaternary Science Reviews. 27, 518-540. Ó Cofaigh, C., Dowdeswell, J.A., Evans, J., Larter, R.D. 2008. Geological constraints on Antarctic palaeoice-stream retreat., Earth Surface Processes and Landforms. 33, 513-525 Ó Cofaigh C., Evans J., Dowdeswell J. A., and Larter R. D. 2007. Till characteristics, genesis and transport beneath Antarctic paleo-ice streams., Journal of Geophysical Research. 112, No. F3, F03006. doi:10.1029/2006JF000606. Benetti, S., Hillenbrand, C., Larter, R.D. & Dowdeswell, J.A. 2006. Variability in glaciomarine sedimentary processes on a West Antarctic trough mouth fan. Eos, Transactions, AGU, 87(52), Fall Meeting Supplement. Hernandez-Molina, F.J., Larter, R.D., Rebesco, M. & Maldonado, A. 2006. Miocene reversal of bottom water flow along the Pacific Margin of the Antarctic Peninsula: Stratigraphic evidence from a contourite sedimentary tail. Marine Geology. 228, 93-116 Hillenbrand, C.-D., Baesler, A. & Grobe, H. 2005. The sedimentary record of the last glaciation in the western Bellingshausen Sea (West Antarctica): Implications for the interpretation of diamictons in a polar-marine setting. Marine Geology, 216, 191-204. Ó Cofaigh, C., Larter, R.D., Dowdeswell, J.A., Hillenbrand, C.-D., Pudsey, C.J., Evans, J. & Morris, P. 2005. Flow of the West Antarctic Ice Sheet on the continental margin of the Bellingshausen Sea at the Last Glacial Maximum. Journal of Geophysical Research, 110, B11, doi: 10.1029/2005JB003619. Thatje, S., Hillenbrand, C.-D. & Larter, R.D. 2005. On the origin of Antarctic marine benthic community structure, Trends in Ecology and Evolution, Vol. 20, No. 10, 534-540. Ó Cofaigh, C., Evans, J., Dowdeswell, J.A., Larter, R.D. & Pudsey, C.J. 2005. Till generation and transport beneath Antarctic palaeo-ice streams: a marine geophysical perspective. International Conference on Glacial Sedimentary Processes and Products. Larter, R.D., Ó Cofaigh, C., Hillenbrand, C.-D., Dowdeswell, J.A., Pudsey, C.J., Evans, J. & Morris, P. 2005. New data from the southern Bellingshausen Sea reveal a major lost drainage basin of the West Antarctic ice sheet. Geophysical Research Abstracts, Volume 7. Hillenbrand, C.-D., Ó Cofaigh, C., Larter, R., Dowdeswell, J., Pudsey, C., Ehrmann, W. & Grobe, H. 2005. Glacial and glaciomarine environments in the southern Bellingshausen Sea since the last glacial maximum a reconstruction based on the sedimentary record. International Conference on Glacial Sedimentary Processes and Products. Larter, R.D., Dowdeswell, J.A., Pudsey, C.J., Evans, J., Hillenbrand, C.-D., Morris, P. & O' Cofaigh, C. 2004. Investigations of a major palaeo-outlet of the West Antarctic Ice Sheet in the southern Bellingshausen Sea: preliminary results from RRS James Clark Ross Cruise JR104. Terra Nostra, Schriften der Alfred-Wegener-Stiftung, 2004/4. Larter, R.D., Dowdeswell, J.A., Pudsey, C.J., Evans, J., Hillenbrand, C.-D., Morris, P. & O' Cofaigh, C. 2004. Investigations of a major palaeo-outlet of the West Antarctic Ice Sheet in the southern Bellingshausen Sea: preliminary results from RRS James Clark Ross Cruise JR104. Antarctic Funding Initiative [AFI] Third Workshop. O' Cofaigh, C., Dowdeswell, J.A., Larter, R.D., Pudsey, C.J., Hillenbrand, C.-D., Evans, J. & Morris, P., 2004. Late Quaternary ice-sheet dynamics in the southern Bellingshuasen Sea as reconstructed from marine geophysical evidence. Antarctic Peninsula Climate Variability: History, Causes and Impacts - Abstracts. Hillenbrand, C.-D., Larter, R.D., Pudsey, C.J., Dowdeswell, J.A., O' Cofaigh, C., Evans, J. & Morris, P. 2004. Glacial and glaciomarine sedimentary successions from the southern Bellingshausen Sea: archives for environmental changes in the Antarctic peninsula region since the last glacial period. Antarctic Peninsula Climate Variability: History, Causes and Impacts - Abstracts. AFI project 04/17 - Glacial-interglacial changes in the lost drainage basin on the West Antarctic Ice Sheet. |
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| Quality: | ||
| Lineage: | ||
| Temporal Coverage: | |
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| Start Date | 2004-01-23 |
| End Date | 2004-02-13 |
| Paleo Temporal Coverage: | |
| Paleo Start Date | N/A |
| Paleo End Date | N/A |
| Chronostratigraphic Unit | QUATERNARY |
| Spatial Coverage: | |
| Latitude | |
| Southernmost | -73 |
| Northernmost | -69 |
| Longitude | |
| Westernmost | -90 |
| Easternmost | -76 |
| Altitude | |
| Min Altitude | N/A |
| Max Altitude | N/A |
| Depth | |
| Min Depth | N/A |
| Max Depth | N/A |
| Location: | |
| Location | Bellingshausen Sea |
| Detailed Location | N/A |
| Location | Southern Ocean |
| Detailed Location | Eltanin Bay |
| Location | Southern Ocean |
| Detailed Location | Ronne Entrance |
| Data Collection: | The programme of data collection was very successful, despite the fact that parts of the area investigated were still covered by first year sea ice. |
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| Data Storage: | The sediment cores and associated analysis data are managed by the British Antarctic Survey (BAS) Geological Data Manager. The cores are stored at the British Ocean Core Repository, NOC BOSCORF, Southampton Oceanography Centre for the long term. |
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