[Omaroo (Chris Malikoff)]

Originally Posted by Enchilada

Many of the geological features, I think, were created by variances in the terrain by erosion and not necessarily glaciation. I.e. Most of the valleys haven't got the familiar "V" shape of glaciers but are in fact more flatter "U" shaped.

V-shaped, glacier-hewn features normally end in huge moraine fields, making it easy to discern what type of erosion has occurred.

Moraines on Schnells Ridge, southwest Tasmania, have been dated using in situ 10Be. An age of 19,400 ± 600 yr is indicated for the well-preserved innermost moraine from consistent measurements on four large quartzite boulders. This corresponds closely with exposure ages reported by T.T. Barrows et al. (2002, Quaternary Science Reviews 21, 159–173) for Last Glacial Maximum glacial features farther north in Tasmania and southeast Australia. In contrast, ages between 39,000 and 141,000 yr were obtained from a series of boulders on a more extensive outer moraine, indicating that this has had a more complex history.

Author Keywords: Glaciation; Tasmania; Cosmogenic nuclide dating

http://www.sciencedirect.com/science...d155c5efea9b97