1. Erosion of intrusive body, then uplift -- but how much? Intrusive body

2. Holocene and Pleistocene Sedimentation on the Antarctic Shelf Why study this topic? 1)Holocene: period of dramatic S. Ocean changes w/o large CO 2 change. 2)Pleistocene orbital cycles: 41K, 100K, CO 2 chicken and egg, Ice/Ocean feedback. 3)Estimate volumes/profiles of the ice sheet – grounding lines….. 4)Pleistocene instabilities of west Antarctic ice, 400Kyr, 1100 Kyr 5)Ultra-high resolution records of climate change and Antarctic Margin productivity

3. CO 2 variations 2

4. Holocene and Pleistocene Sedimentation on the Antarctic Shelf Why study this topic? 1)Holocene: period of dramatic S. Ocean changes w/o large CO 2 change. 2)Pleistocene orbital cycles: 41K, 100K, CO 2 chicken and egg, Ice/Ocean feedback. 3)Estimate volumes/profiles of the ice sheet – grounding lines….. 4)Pleistocene instabilities of west Antarctic ice, 400Kyr, 1100 Kyr 5)Ultra-high resolution records of climate change and Antarctic Margin productivity

5. CO 2 from EPICA ice core analysis Siegenhalter, et al., Science 310, 1313-1317, 2005

6. Brook (2005)

7. Light Purple: Altitude > 3000m Red: Slope < 1/1000 Blue: Snow accumulation < 5g/cm2/year Green: Auroral oval below the horizon Gray: Limit of visibility for geostationary satellites. Byrd Taylor Dome Siple

8. Holocene and Pleistocene Sedimentation on the Antarctic Shelf Why study this topic? 1)Holocene: period of dramatic S. Ocean changes w/o large CO 2 change. 2)Pleistocene orbital cycles: 41K, 100K, CO 2 chicken and egg, Ice/Ocean feedback. 3)Estimate volumes/profiles of the ice sheet – studies of grounding lines and how the ice actually retreats….. 4)Pleistocene instabilities of west Antarctic ice, 400Kyr, 1100 Kyr 5)Ultra-high resolution records of climate change and Antarctic Margin productivity

9. LGM in Lambert-Amery region

10. Loewe Massif Mount LanyonMawson Escarpment Mount Ruker Mount Lanyon

18. GSA Today – December, 2006

27. Holocene and Pleistocene Sedimentation on the Antarctic Shelf Why study this topic? 1)Holocene: period of dramatic S. Ocean changes w/o large CO 2 change. 2)Pleistocene orbital cycles: 41K, 100K, CO 2 chicken and egg, Ice/Ocean feedback. 3)Estimate volumes/profiles of the ice sheet – studies of grounding lines and how the ice actually retreats….. 4)Pleistocene instabilities of west Antarctic ice at 120 kyr, 400kyr, 1100 kyr 5)Ultra-high resolution records of climate change and Antarctic Margin productivity