Geological Investigations in the Great Island Area, Manitoba (Parts of NTS 54L13, 54M4, 64I15, 16, 64P1, 2) by S.D
GS-13 Far North Geomapping Initiative: geological investigations in the Great Island area, Manitoba (parts of NTS 54L13, 54M4, 64I15, 16, 64P1, 2) by S.D. Anderson, C.O. Böhm, E.C. Syme, A.R. Carlson and L.A. Murphy Anderson, S.D., Böhm, C.O., Syme, E.C., Carlson, A.R. and Murphy, L.A. 2009: Far North Geomapping Initiative: geological investigations in the Great Island area, Manitoba (parts of NTS 54L13, 54M4, 64I15, 16, 64P1, 2); in Report of Activities 2009, Manitoba Innovation, Energy and Mines, Manitoba Geological Survey, p. 132–147. Summary to the late Neoarchean to earliest A major new phase in the remapping of selected por- Paleoproterozoic. On the basis of composition and tex- tions of Manitoba’s far north was initiated in 2008 with ture, these rocks are divided into seven map units, the a scoping study and continued with a focused effort in relative and absolute ages of which remain unknown. 2009. The Great Island area, 120 km west of Churchill, was chosen because of its importance to the resolution of Introduction several fundamental questions pertaining to the Precam- This report summarizes the results of fieldwork com- brian geology and mineral potential of northern Manitoba. pleted in 2009 during the first full season of bedrock map- It provides key exposures of metasedimentary cover suc- ping under the auspices of the Far North Geomapping cessions, includes the only known exposures of metavol- Initiative – a three-year study of the Hearne craton mar- canic rocks in Manitoba’s far north and contains several gin in Manitoba being undertaken by the Manitoba Geo- important mineral occurrences.
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