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Victoria University Antarctic Research Expedition Science and Logistics Reports 1972-73: VUWAE 17


page 20


A detailed study and sampling of the Mawson volcano breccia was carried out at Shapeless Mountain and on neighbouring Mistake Peak. The lithology of the breccia varied quite considerably, both in clast and matrix composition, and sometimes this could be directly related to underlying or included rock types, Dolerite intrusions, sometimes partly or wholly brecciated themselves, showed no gradation into the main breccia.

Petrographic examination, chemical analysis, and possibly dating, will be carried out on the material sampled.