Geology of the Coasts of the Arctic Lands visited by the late British Expedition under Captain Sir George Nares, R.N., K.C.B., F.R.S.

Abstract

The Laurentian rocks described by Sir William Logan occupy an area of 200,000 square miles in Canada, and attain a thickness of 40,000 feet in two series, the one unconformable to the other, and, stretching northwards, form the fundamental rocks of the Polar area.