- GeoRef, Copyright 2004, American Geological Institute. Reference includes data from Arctic Bibliography, electronic version. Digitized from the Arctic Bibliography, print version, prepared by the Arctic Institute of North America.
Presents data on whole-rock ages of shales occuring between and below Pre-Cambrian tillites at Varangerfjord, n. Norway. These indicate deposition of tillite c. 668+ or -23 m.y., and thus dates the Varanger Ice Age. This date corresponds with dated Pre-Cambrian glaciation in the Congo and Australia. The Tanafjord Group, or Old Sandstone, beneath the tillites, dated 810+ or -90 m.y., correlates with the Upper Torridonian of Scotland.