Chapter 1 Precambrian Geology (original) (raw)

Canadian Inland Seas

Abstract

Publisher Summary Hudson Bay, James Bay, and Foxe Basin occupy depressions in the central part of the Canadian Shield that constitutes the Precambrian crustal nucleus of North America. On the basis of structural style and radiometrically determined ages, the Canadian Shield is subdivided into seven distinctive tectonic provinces. The largest of these, the Superior and Churchill Provinces, surround and underlie Paleozoic and Mesozoic strata that occupy substantial areas beneath and adjacent to James Bay and Hudson Bay. The rocks of the Superior Province form much of the eastern shoreline of James Bay and Hudson Bay and those of the younger Churchill Province form the shorelines on sides of northern Hudson Bay, the northeastern shoreline of Southampton Island, and all of the Precambrian shoreline around Foxe Basin. The Belcher islands, Ottawa islands, and most other islands in the eastern part of Hudson Bay, as well as a few small near-0shore islands in Foxe Basin, belong to the Churchill Province.

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