Petrology and Isotopic Composition of a Grenvillian Basement Fragment in the Northern Appalachian Orogen: Blair River Inlier, Nova Scotia, Canada |
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| Authors: | MILLER, BRENT V. BARR, SANDRA M. |
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| Affiliation: | 1DEPARTMENT OF GEOLOGICAL SCIENCES, UNIVERSITY OF NORTH CAROLINA AT CHAPEL HILL, CB 3315, MITCHELL HALL, CHAPEL HILL, NC 27599-3315, USA
2DEPARTMENT OF GEOLOGY, ACADIA UNIVERSITY, WOLFVILLE, N.S., B0P 1X0, CANADA |
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| Abstract: | Mesoproterozoic metaplutonic rocks in northern Cape Breton Island,Nova Scotia, occur in a tectonic inlier within the Appalachianorogen. Although they have been multiply metamorphosed and variablydeformed, the petrology and geochemistry of these rocks provideinsight into the tectonomagmatic evolution of easternmost Laurentia.Anorthosite, syenite, and granitoid plutons (1100980Ma) intruded the Sailor Brook and Polletts Cove River gneisses.New Nd isotopic data are presented from a biotite-rich partof the Sailor Brook gneiss ( |
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