Several lines of evidence have led to the conclusion that glaciers still occupied highlands to the east of Allan Hills during the deposition of the Weller Coal Measures (Barrett et al. submitted). These include:

a)	Rhythmically laminated muddy sandstone and sandy mudstone. Rhythmic lamination is unusual in fluvial systems other that those controlled by seasonal ice melting.page break
b)	Pockets of outsized clasts, these are typically pebbles 2-5cm in diameter contained within sandy or muddy horizons. These grouped pebbles are interpreted as having been ice rafted by lake or glacier ice floating down current during of after major thaws.
c)	A large striated boulder was found in WCl in "Camp Valley". Multidirectional striae show that the boulder was striated prior to its inclusion in the surrounding sediment and the fine preservation suggests limited fluvial transport.