Johnston Glacier [SEP] continent
Johnston Glacier
Johnston Glacier () is a glacier flowing in a southeasterly direction along the north side of Mount Owen to the head of Nantucket Inlet, on the east coast of Palmer Land, Antarctica. It was discovered by the Ronne Antarctic Research Expedition, 1947–48, under Finn Ronne, who named it for Freeborn Johnston of the Department of Terrestrial Magnetism at the Carnegie Institute, Washington, D.C., in recognition of his contributions to the planning of the geophysical program and the working up of the results for the expedition.
Eocene–Oligocene extinction event). The term Late Cenozoic Ice Age is used to include this early phase.
During this last glacial period there were alternating episodes of glacier advance and retreat. Within the last glacial period the Last Glacial Maximum was approximately 22,000 years ago. While the general pattern of global cooling and glacier advance was similar, local differences in the development of glacier advance and retreat make it difficult to compare the details from continent to continent (see picture of ice core data below for differences). Approximately 13,000