There has been considerable disagreement amongst researchers concerning the extent of South Georgia’s ice sheet during the Last Glacial Maximum (LGM). The sub-Antarctic islands (those below the polar front) may have been completely glaciated during previous glacials, and the last largest extent of the South Georgia ice sheet was during the LGM, about 21,000 years ago. But glaciologists don’t agree ...[Read More]
Cryo History – Extent of South Georgia Glaciation during the Last Glacial Maximum
Figure 1: The different hypotheses for the Last Glacial Maximum (LGM) ice extent in South Georgia. Black line = big ice hypothesis (Graham et al., 2017); purple line = little-big ice hypothesis (Barnes et al., 2016); red line = little ice hypothesis (Hodgson et al., 2014).