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Report on the Sixth and Seventh Victoria University of Wellington Antarctic Expedition 1962-63: VUWAE 6 & 7

The Brown Hills - Darwin Mountains

The Brown Hills - Darwin Mountains.

No previous geological expeditions have visited the area. Air reconnaissance of the geology of the area in early 1962 indicated that the rocks were comprised mainly of the basement complex intruded by dolerite sills with Beacon Sandstone exposed in the western part. It was hoped that a study of the basement would enable correlation to be carried out with the stratigraphic sequences established near the Koettlitz Glacier by the 1960-61 VUWAE expedition. However the geology was found to be different from the Koettlitz area and consequently little correlation was attained.

Using aerial photographs taken by the U.S. Navy the geology of the Brown Hills and the Darwin Mountains was mapped for about 400 square miles. The stratigraphic sequence established for the Beacon sediments enables correlates with other nearby areas, especially that of the Beardmore Glacier area (Grindley - in press) where the sequence is essentially the same.