Traces of Past Glacial Action in the Orange River Colony, South Africa

Abstract

THE subject of glaciation in South Africa is so interesting and important that I venture to take an early opportunity of directing the attention of geologists to the farm of Brit Koppje, situated about three miles west of Vredefort Road Station, fifty miles north of Kroonstad, in the Orange River Colony. Here, on a koppje, the surface of the rock is so very conspicuously smoothed and rounded that its appearance can hardly, I think, be attributed to the action of any agent other than ice. The general resemblance to photographs of the glaciated rocks at Prieska in Cape Colony recently shown me by Mr. A. W. Rogers, of the Cape Colony Geological Commission, is very great (see a paper read before the South African Philosophical Society by Messrs. Rogers and Schwartz on November 29. 1899)