Glacial rocks reveal the geology hidden beneath the East Antarctica Ice Sheet
Map of subglacial topography of central East Antarctica showing context of study samples. Sample sites on the inland flank of the TAM shown by white stars. Topography is in meters above sea level, after Bedmap2. Shown are interior subglacial mountains and basins, drainage divides (dashed blue lines) and ice-flow directions within the overlying East Antarctic Ice Sheet. Blue line outlining heavy dots shows source area of glacial moraine cobbles inferred…