PERI-GLACIAL FEATURES MAPPED IN THE CHUKCHI BORDERLAND; CONSTRAINTS ON GLACIAL EXTENT AND MOTION
Initial processing suggests at least some evidence of these features that would have likely been created during the Last Glacial Maximum. During this period, sea level was estimated to be roughly 125 meters lower than today, allowing for massive glaciers to exist in the relatively shallow waters of the Chukchi Plateau. During the initial processing, we identified several sets of parallel grooves in the ocean floor along with drumlins, typically streamlined perpendicular to bathymetric contours and parallel to mega scale glacial lineations. Evidence of moraines was also found in the vicinity of the mega scale glacial lineations, parallel to bathymetric contours and perpendicular to parallel grooves. These parallel grooves are indicative of deep-keel gouges and mega scale glacial lineations, however additional processing and potentially future data acquisition is needed. The interpretation of these data will allow for a more detailed map of glacial movement to be created within the region, which may provide insight into the Arctic climate during the Last Glacial Maximum.