Book Description

The Ontario Geological Survey began mapping in the Uchi-Confederation greenstone belt shortly after the discovery of theSelco Incorporated Cu-Zn-Ag orebody at Confederation Lake in1969. Detailed mapping of 14 townships and 100 square miles ofunsubdivided territory and 1:50,000 scale mapping of the BirchLake area to the north followed through to 1978. This reportdescribes a synoptic project covering 375 square miles in thesouthern part of the area. The report describes the stratigraphyof three cycles of mafic to felsic volcanism, includinggeochronological data, and a paleovolcanological reconstruction. Geochemical work done as part of this synoptic project isdescribed in a separate Ontario Geological Survey publication.