Speculations on nature and extent of Archean basement in Labrador as indicated by SR, ND and PB isotopic systematics of proterozoic intrusives

• Main Authors: Wooden, J. L., Emslie, R. F., Ashwal, L. D.
• Format: Other/Unknown Material
• Language: unknown
• Published: 1986
• Subjects: GEOPHYSICS; Nain
• Online Access: http://hdl.handle.net/2060/19860019064

The Sm-Nd and Rb-Sr isotopic compositions of mid to late Proterozoic (approximately 1.6 to 1.1 Ga) massif-type anorthosites and mafic intrusives in the eastern Canadian shield are correlated with geographic location. Complexes in the Grenville province have positive epsilon sub Nd values and initial...