Precambrian Glaciated Surface Beneath the Gowganda Formation, Lake Timagami, Ontario

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Science  09 Jul 1965:
Vol. 149, Issue 3680, pp. 176-177
DOI: 10.1126/science.149.3680.176


Glacial deposition of the Gowganda formation is established by the discovery of an extensive, well-marked, glaciated, basal contact surface. This surface is exposed near the southeastern end of Lake Timagami, northern Ontario. The Precambrian ice sheet advanced three times from the northeast over the area.