Weathering and morphostratigraphic evidence for four glaciations in the Henty River Basin, western Tasmania

Abstract

Application of relative dating techniques, such as percentage absorption and specific gravity of Cambrian volcanic clasts, forces a reinterpretation of palaeomagnetic evidence previously offered for the age of the Henty Drift, so that at least three pre-Last Glacial Maximum (LGM) drift sheets can be recognised. The deeply weathered and most extensive Berry Creek Drift can be clearly distinguished from the slightly less extensive but more widely exposed Henty Drift. A minimally weathered and spatially restricted drift, termed the Julia Drift, is exposed beyond and pre-dates the LGM end moraines. -from Authors