@article {2693,
	title = {A centuries-long delay between a paleo-ice-shelf collapse and grounding-line retreat in the Whales Deep Basin, eastern Ross Sea, Antarctica},
	journal = {Scientific Reports},
	volume = {8},
	year = {2018},
	month = {Jan-12-2018},
	abstract = {Recent thinning and loss of Antarctic ice shelves has been followed by near synchronous acceleration of ice flow that may eventually lead to sustained deflation and significant contraction in the extent of grounded and floating ice. Here, we present radiocarbon dates from foraminifera that constrain the time elapsed between a previously described paleo-ice-shelf collapse and the subsequent major grounding-line retreat in the Whales Deep Basin (WDB) of eastern Ross Sea. The dates indicate that West Antarctic Ice Sheet (WAIS) grounding-line retreat from the continental shelf edge was underway prior to 14.7 {\textpm} 0.4 cal kyr BP. A paleo-ice-shelf collapse occurred at 12.3 {\textpm} 0.2 cal kyr BP. The grounding position was maintained on the outer-continental shelf until at least 11.5 {\textpm} 0.3 cal kyr BP before experiencing a 200-km retreat. Given the age uncertainties, the major grounding-line retreat lagged ice-shelf collapse by at least two centuries and by as much as fourteen centuries. In the WDB, the centuries-long delay in the retreat of grounded ice was partly due to rapid aggradational stacking of an unusually large volume of grounding-zone-wedge sediment as ice-stream discharge accelerated following ice-shelf collapse. This new deglacial reconstruction shows that ongoing changes to ice shelves may trigger complex dynamics whose consequences are realized only after a significant lag.},
	doi = {10.1038/s41598-018-29911-8},
	url = {https://www.nature.com/articles/s41598-018-29911-8},
	author = {Bart, Philip J. and DeCesare, Matthew and Rosenheim, Brad E. and Majewski, Wojceich and McGlannan, Austin}
}
@article {163,
	title = {Early stall of West Antarctic Ice Sheet advance on the eastern Ross Sea middle shelf followed by retreat at 27,500 14C yr BP},
	journal = {Palaeogeography, Palaeoclimatology, Palaeoecology},
	volume = {335-336},
	year = {2012},
	note = {id: 2170},
	pages = {52-60},
	abstract = {Marine geological and geophysical data suggest that the West Antarctic Ice Sheet (WAIS) deposited three thick seismically-resolvable units in the eastern Ross Sea since the Last Glacial Maximum (LGM) but the chronology of these grounding events is debated. Existing ice-retreat chronologies for the eastern Ross Sea are considered suspect because nearly all have been developed using radiocarbon dating of acid-insoluble organics (AIO) from bulk sediment. We used a new strategy to isolate in situ forams from diamict sediment deposited at the middle-shelf grounding-zone wedge (GZW) {\textemdash} a subaqueous ice-marginal landform previously interpreted to represent deposition during the third grounding event since the LGM advance to the shelf edge. Here we present a synthesis of our new radiocarbon dates of foram tests and AIO with previously published radiocarbon dates. We propose that the WAIS{\textquoteright}s LGM advance in the eastern-Ross Sea sector reached the middle shelf circa 27,500 14C yr BP and that open-marine sedimentation began shortly thereafter. There is as of yet no clear explanation for why WAIS retreat in this sector of Antarctica apparently began prior to the peak of the last glacial cold period. A precipitation deficit, localized warm water intrusion, an ice dynamic response in the absence of climate forcing or another as of yet unknown forcing mechanism could be responsible.},
	issn = {0031-0182},
	doi = {10.1016/j.palaeo.2011.08.007},
	url = {http://www.sciencedirect.com/science/article/pii/S0031018211004330},
	author = {Bart, Philip J. and Cone, Amy N.}
}
