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Research title British Ice Sheet Dynamics: Constraining ice-sheet thickness and ice-stream collapse in NW Scotland using cosmogenic isotope analysis. Summary of research Objectives of the project:
1. To map and critically assess geomorphological and stratigraphical evidence for both vertical and horizontal palaeo-ice-sheet limits, in NW Scotland.
2. To date key locations determined from this assessment using surface exposure dating cosmogenic nuclide analysis (10Be).
3.To use these data to test the validity of palaeonunataks in NW Scotland.
4. To use these data to constrain ice-sheet reatreat in NW Scotland and, hence, provide a chronology for the collapse of the Minch palaeo-ice stream.
5. To reconstruct the flow dynamics of the NW sector of the last British ice sheet, based on the empirical evidence, with particular reference to the Minch palaeo-ice stream, ice piracy, and the upper surface of the ice sheet at its maximum extent.
6. To assess the validity of the palaeo-ice sheet reconstruction against stratigraphical, sedimentological, marine geophysical and paleoecological data. Supervisors Dr Derek Fabel
Tom Bradwell (British Geological Survey) Recent publications Bradwell, T., Stoker, M.S., Golledge, N.R., Wilson, C.K., Merritt, J.W., Long, D., Everest, J.D., Hestvik, O.B., Stevenson, A.G., Hubbard, A.L., Finlayson, A.G., Mathers, H.E. 2008. The northern sector of the last British Ice Sheet: Maximum extent and demise. Earth-Science Reviews, v.88, 207-226. doi:10.1016/j.earscirev.2008.01.008 >> Bradwell, T., Fabel, D., Stoker, M., Mathers, H., McHargue, L. and Howe, J. 2008. Ice caps existed throughout the Lateglacial Interstadial in northern Scotland.
J. Quaternary Sci., v.23, 401–407. View full text >> |
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