Lithologic Composition of Rock Clasts

The Elephant Moraine is composed primarily of rock clasts and large boulders. Fine grained sediment is preserved only in areas where it is protected by lag gravel. The clasts and residual fines occur in bands on the surface of bare (blue) ice. Snow and fim occur only locally depending on the time that has elapsed since the most recent snowstorm. 

The clasts and fine-grained sediment lie on sedimentladen ice in Fig. 17.5 from which they are derived by 

Clasts of diamictite of the Mawson Formation which is exposed in the Allan and Coombs hills (Section 12.3.1) occur at 60% of the surveyed sites at abundances greater than zero but less than about 8% by number in Fig. 17.7c. The abundances of 

A Survey Points (John Schutt) Ablation Stake + Surveyed Station 

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