Geological Survey Of Canada Current Research Online No 2004 B4

Download or read book Geological Survey of Canada, Current Research (Online) no. 2004-B4 written by Elizabeth C. Turner and published by Natural Resources Canada. This book was released on 2004 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dolostone mounds over 200 metres thick and over four kilometres across developed in deep water during uppermost Arctic Bay Formation shale deposition in the north-west Milne Inlet Graben on northern Baffin Island. This paper describes the geometry of hitherto unrecognized mounds that have been identified from field work in five areas: the Saint Georges Society Cliffs near Arctic Bay; beneath the Nanisivik lead-zinc deposit; Red Rock valley; Magda Lake; and Bellevue Mountain. Their lithology, lateral facies relations, and internal composition are described and an interpretation of the origin & growth of the mounds is offered. Finally, implications of mound growth & distribution for the fault-related flow of mineralizing fluids and consequent base-metal deposition are discussed.