The 185 and 328m cores recovered from DVDP 10 and 11 respectively in eastern Taylor Valley reflect the Miocene to Pleistocene tectonic and glacial history of the uplifted former fjord. At both drilling sites a Pleistocene regressive glacio-marine sequence disconformably overlies early Pliocene marine tillites, which in turn at DVDP 11 overlie late Miocene marine tillites. The 139m of Miocene and Pliocene strata in DVDP 11 indicate both decreasing bathymetry and increasing ice cover in progressively younger horizons. The overlying regressive Pleistocene strata in DVDP 11 exceed 188m, and in DVDP 10 137m. The basal disconformity indicates major uplift, with grounding of ice in DVDP 10 and sublittoral reworking in DVDP 11. The Pleistocene marine tillites pass irregularly via younger strandline strata up to glaciofluvial sandstones. Intraformational detritus is abundant throughout much of the Pleistocene sequence and indicates periods of erosion contemporaneous with sedimentation. Similarly some of the Pliocene and Miocene tillites contain fragments of older tillites. Evidence of resedimentation occurs in DVDP 10. The petrography of the cores shows their derivation to have been largely from the early Palaeozoic basement complex of southern Victoria Land, and to a much less extent from the Jurassic Ferrar Dolerites. There is evidence to suggest the Pleistocene strata were deposited from ice extending eastwards up the valley, in contrast to the Pliocene and Miocene tillites which were derived from a western ice source flowing down the valley. Basaltic volcanic detritus is present throughout, but is abundant only in the youngest horizons
