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Obliquity-paced Pliocene West Antarctic ice sheet oscillations
A marine glacial record from the upper 600 m of the AND-1B sediment core recovered from beneath the northwest part of the Ross ice shelf is presented and well-dated, ∼40-kyr cyclic variations in ice-sheet extent linked to cycles in insolation influenced by changes in the Earth’s axial tilt (obliquity) during the Pliocene are demonstrated. Expand
Antarctic and Southern Ocean influences on Late Pliocene global cooling
Evidence for a major expansion of an ice sheet in the Ross Sea that began at ∼3.3 Ma, followed by a coastal sea surface temperature cooling of ∼2.5 °C, indicates an additional role played by southern high-latitude cooling during development of the bipolar world. Expand
Eocene cooling linked to early flow across the Tasmanian Gateway
Although atmospheric CO2 forcing alone would provide a more uniform middle Eocene cooling, the opening of the Tasmanian Gateway better explains Southern Ocean surface water and global deep ocean cooling in the apparent absence of (sub-) equatorial cooling. Expand
Ross Sea paleo-ice sheet drainage and deglacial history during and since the LGM
Onshore and offshore studies show that an expanded, grounded ice sheet occupied the Ross Sea Embayment during the Last Glacial Maximum (LGM). Results from studies of till provenance and the orientaExpand
The stratigraphic signature of the late Cenozoic Antarctic Ice Sheets in the Ross Embayment
A 1284.87-m-long sediment core (AND-1B) from beneath the McMurdo sector of the Ross Ice Shelf provides the most complete single section record to date of fluctuations of the Antarctic Ice Sheets overExpand
Antarctic ice sheet sensitivity to atmospheric CO2 variations in the early to mid-Miocene
Miocene sediments in the ANDRILL-2A drill core from the Western Ross Sea, Antarctica, indicate that the Antarctic ice sheet (AIS) was highly variable through this key time interval, which includes the Miocene Climatic Optimum. Expand
Retreat history of the East Antarctic Ice Sheet since the Last Glacial Maximum
The East Antarctic Ice Sheet (EAIS) is the largest continental ice mass on Earth, and documenting its evolution since the Last Glacial Maximum (LGM) is important for understanding its present-day andExpand
Dynamic behaviour of the East Antarctic ice sheet during Pliocene warmth
Warm intervals within the Pliocene epoch (5.33–2.58 million years ago) were characterized by global temperatures comparable to those predicted for the end of this century1 and atmospheric CO2Expand
Retreat history of the Ross Ice Sheet (Shelf) since the Last Glacial Maximum from deep-basin sediment cores around Ross Island
Abstract Radiocarbon-dated sediment cores from deep basins beneath the McMurdo Ice Shelf, and seasonally open water north of Ross Island, McMurdo Sound, display a characteristic succession ofExpand
Sedimentology and Stratigraphy of the AND-1B Core, ANDRILL McMurdo Ice Shelf Project, Antarctica
During the 2006–2007 austral season, the ANDRILL McMurdo Ice Shelf Project recovered a core 1285 m-long (AND-1B) from Windless Bight in the McMurdo Sound region. This core contains a range ofExpand