This report outlines preliminary field results of bedrock mapping of a central Baffin Island study area that straddles the eastern segment of the Trans-Hudson Orogen. Orthogneiss in the Archean basement and rocks of the Paleoproterozoic Piling Group are described from the lowest to highest structural levels (Dewar Lakes, Flint Lake, Astarte River, Bravo Lake, Longstaff Bluff and related formations, the Cumberland Batholith, and the diabase dikes of the Franklin swarm). The final sections discuss deformation & metamorphism in the study area and briefly assess the potential for mineral deposits.
DISCUSSION Achieving some controls on the stratigraphic and structural settings of the metasedimentary and metavolcanic rocks of theEagleBayAssemblageintheJohnsonLake–Adams Lake regionwillhaveimportantimplicationsforunderstandingthe ...
Describes how metamorphic rocks are formed, where they are found, and their uses.
The Aylmer Lake volcanic belt, located north of the north-east end of Great Slave Lake, defines an upward-facing structural dome intruded in its core by a number of granitoid plutons and overlain by multiply folded metaturbidite units.