Understanding the stability of the Antarctic ice sheet during the Pliocene has important implications to future Antarctic ice sheet changes and sea level. However, changes in the eastern Antarctic ice sheet are still largely unknown. This work may provide key geological evidence to fill in this knowledge gap.
Understanding the stability of the Antarctic ice sheet during the Pliocene has important...
We constructed a geologic record of East Antarctic Ice Sheet thickness from deposits at Otway Massif to directly assess how Earth's largest ice sheet responds to warmer-than-present climate. Our record confirms the long-term dominance of a cold polar climate but lacks a clear ice sheet response to the mid-Pliocene Warm Period, a common analogue for the future. Instead, an absence of moraines from the late Miocene–early Pliocene suggests the ice sheet was less extensive than present at that time.
We constructed a geologic record of East Antarctic Ice Sheet thickness from deposits at Otway...