Abstract:
200+ erratic and bedrock samples were collected for cosmogenic isotope analysis, as well as several depth profiles of tills. Samples were collected from 11 sites along a 350km transect stretching from Pirrit Hills in the south to the ridge between Mt Bentley and Mt Hubley in the north. Most sites were on the western (West Antarctic Ice Sheet) side of the range but includes Flowers Hills on the east side of the range, adjacent to the Rutford Ice Stream. Throughout, the emphasis was on taking samples to allow dating of any changes in ice altitude/extent.
Keywords:
Ellsworth Mountains, WAIS, Weddell Sea Embayment, erratics, glacial transport, rock samples
| Access Constraints: | This sample collection is currently being managed by the University of Edinburgh. |
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| Use Constraints: | All data are subject to NERC data policy. |
| Creation Date: | 2012-02-27 |
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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 | Prof Michael Bentley |
| Role(s) | Investigator |
| Organisation | Durham University |
| Name | Dr Christopher Fogwill |
| Role(s) | Investigator |
| Organisation | University of Edinburgh |
| Name | Dr Alun Hubbard |
| Role(s) | Investigator |
| Organisation | University of Edinburgh |
| Name | Prof David Sugden |
| Role(s) | Investigator |
| Organisation | University of Edinburgh |
| Name | Dr Fin Stuart |
| Role(s) | Investigator |
| Organisation | SUERC |
| Name | Dr Anne M Le Brocq |
| Role(s) | Investigator |
| Organisation | Exeter University |
| Parent Dataset: | N/A |
| Reference: | Le Brocq, A., Bentley, M., Hubbard, A., Bamber, J., 2008. Subglacial topography inferred from ice surface terrain analysis. Geophysical Research Letters 35, L16503, doi:10.1029/2008GL034728. Michael .J. Bentley, Christopher J. Fogwill, Anne M. Le Brocq, Alun L. Hubbard, David E. Sugden, Tibor J. Dunai, Stewart P.H.T. Freeman, 2009. Deglacial history of the West Antarctic Ice Sheet in the Weddell Sea embayment: constraints on past ice volume change. Geology 38(5), 411-414. Fogwill, C.J., Hein, A., Bentley, M.J., Sugden, D.E., 2010. Do blue-ice moraines in the Heritage Range show the West Antarctic Ice Sheet survived the last interglacial? Palaeogeography, Palaeoclimatology, Palaeoecology 10.1016/j.palaeo2011.01.027. Bentley. M.J., 2010. The Antarctic palaeo record and its role in improving predictions of future Antarctic Ice Sheet Change. Journal of Quaternary Science, 25(1), 5-18. Michael J. Bentley, Christopher J. Fogwill, Anne M. Le Brocq, Alun L. Hubbard, David E. Sugden, Tibor J. Dunai, Stewart P.H.T. Freeman, 2010. Deglacial history of the West Antarctic Ice Sheet in the Weddell Sea embayment: Constraints on past ice volume change. Geology 38(5) 411-414. Bentley, M.J., Sugden, D.E., Fogwill, C.J., Le Brocq, A.M., Hubbard, A.L., Dunai, T. and Freeman, S.P.H.T. 2011. Deglacial history of the West Antarctic Ice Sheet in the Weddell Sea embayment: constraints on past ice volume change:REPLY, Geology, 39, e240. doi: 10.1130/G32140Y.1. Le Brocq, A.M., Bentley, M.J., Fogwill, C.J., Hubbard, A.L., Sugden, D.E., Whitehouse, P.L. 2011. Reconstructing the contribution of the Weddell Sea sector, Antarctica, to sea level rise since the last glacial maximum, using numerical modelling constrained by field evidence, Quaternary Science Reviews. 30 (19-20), 2422-2432. doi:10.1016/j.quascirev.2011.05.009 Ross, N. Siegert, M.J. Woodward, J., Smith, A.M., Corr, H., Bentley, M.J. Hindmarsh, R.C., King, E., Rivera, A., 2011. Holocene stability of the Amundsen-Weddell ice divide, West Antarctica. Geology, 39, 935-938. doi: 10.1130/G31920.1. Project ref: AFI 05/03 - Timing and rates of ice sheet thinning in the Ellsworth Mountains, Weddell Sea embayment. |
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| Quality: | The quality of the samples is excellent as the majority of the lithologies we sampled were quartz-rich sandstones and quartzites. Initial laboratory results confirmed that these samples contain abundant material for analysis. | |
| Lineage: | Sampling methods consisted of hammer and chisel, petrol-powered rock saw (in a few instances), and pits dug into glacial sediments. | |
| Temporal Coverage: | |
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| Start Date | 2005-11-15 |
| End Date | 2006-01-15 |
| Paleo Temporal Coverage: | |
| Paleo Start Date | ~2 Ma |
| Paleo End Date | ~0.001 Ma |
| Chronostratigraphic Unit | QUATERNARY |
| Spatial Coverage: | |
| Latitude | |
| Southernmost | -81.1 |
| Northernmost | -78.15 |
| Longitude | |
| Westernmost | -96.22 |
| Easternmost | -80 |
| Altitude | |
| Min Altitude | 0m |
| Max Altitude | ~3000m |
| Depth | |
| Min Depth | N/A |
| Max Depth | N/A |
| Location: | |
| Location | Antarctica |
| Detailed Location | Ellsworth Mountains |
| Source(s): |
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| Distribution: | |
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| Distribution Media | N/A |
| Distribution Size | 400 kg of rock samples (>200 samples) |
| Distribution Format | N/A |
| Fees | N/A |
| Data Storage: | This sample collection is currently being managed by the University of Edinburgh. |