Volcano-sedimentary correlation and fault relationships in the Baker Lake Sub-basin, Thrity Mile Lake area, Nunavut

The volcanic succession of the Baker Lake Group in the Thirty Mile Lake area in ascending order is 1) felsic minette flows, 2) mafic minette flows, and 3) felsite flows. The succession is time-equivalent to the third-order sequences BL-2, BL-3, and BL-4 of the ca. 1.83 Ga Baker Lake second-order sequence (Baker Lake Group). Two sets of faults are recognized throughout the Baker Lake Sub-basin: an east-trending set of normal faults that have accommodated north-south extension and a conjugate set of strike-slip faults trending about 340° and 040° that have accommodated east-west extension and north-south shortening. The strike-slip faults offset and therefore postdate the normal faults. Faulting was contemporaneous with deposition of the Wharton Group (1765–1750 Ma) but ceased before deposition of the Barrensland Group (1720 Ma). 2001-C10 T. Hadlari and R.H. Rainbird 1 CURRENT RESEARCH RECHERCHE EN COURS 2001 Article Article Titles Titres Purchase Information Information pour acheter 1 Contribution to the Western Churchill NATMAP Project 2 Ottawa-Carleton Geoscience Centre, Department of Earth Sciences, Carleton University, Ottawa, Ontario K1S 5B6