Early miocene subglacial basalts, the East antarctic ice sheet, and uplift of the transantarctic mountains.
Subglacially erupted volcanic rocks from Mount Early and Sheridan Bluff, Antarctica, yield whole-rock potassium-argon dates and argon-40/argon-39 release spectra of Early Miocene age. Field associations suggest the existence of the East Antarctic ice sheet and significant uplift of the Transantarctic Mountains by that time.
Stump
E
E
Sheridan
M F
MF
Borg
S G
SG
Sutter
J F
JF