Sirius Formation

Extensive exposures of the Sirius Formation occur through Allan Hills. Although the formation was not studied in detail during the 1990-91 a number of features were recorded which could form the basis of a more detailed study in the future.

a)	Glacial striae are preserved in several locations both adjacent to and beneath the Sirius Formation. These could be used to supplement geomorphic and fabric studies in order to constrain paleo-ice flow directions.page break
b)	At a number of localities Sirius Formation directly overlies well exposed deformed Beacon sediments. It is believed that these underlying rocks were deformed by ice contact drag folding. A study of the structural styles of both the sub-Sirius and sub-Mawson deformed zone could provide a better understanding of ice-rock interactions.
c)	Several different emplacement mechanisms are suggested by the geomorphic position of the diamictite exposures. These include valley floor, valley wall and ridge line deposits.