Quick Search:    advanced search

GSW Home   GeoRef Home   My GSW Alerts   Contact GSW   About GSW   Journals List   Help

This Article Résumé Figures Only Full Text Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Citation Map Services Email this article to a friend Similar articles in this journal Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via Google Scholar Google Scholar Articles by Jungwirth, T. Articles by Froese, E. Search for Related Content GeoRef GeoRef Citation

METAMORPHISM OF THE BURNTWOOD GROUP IN THE DUVAL LAKE AREA, MANITOBA, CANADA^*

Tracey Jungwirth^1,, Terence M. Gordon^1, and Edgar Froese²

¹ Department of Geology and Geophysics, University of Calgary, Calgary, Alberta T2N 1N4, Canada
² Geological Survey of Canada, 601 Booth Street, Ottawa, Ontario K1A 0E8, Canada

E-mail address: tmg{at}geo.ucalgary.ca

The occurrence of porphyroblastic staurolite-bearing metagreywacke of the Burntwood Group between Duval Lake in northern Manitoba and the Saskatchewan–Manitoba border led previous investigators to suggest the presence of a metamorphic low in the Kisseynew gneiss belt. Thermobarometric measurements on quartz – plagioclase – sillimanite – garnet – biotite assemblages in the Duval Lake area and in the vicinity of Lobstick Narrows (Kisseynew Lake), near the boundary between the Kisseynew gneiss belt and the Flin Flon volcanic belt, gave values of 3000 ± 600 bars and 530° ± 27°C. These values are within measurement uncertainty and suggest a uniform metamorphic grade. We conclude that the occurrence of staurolite is controlled by bulk composition and that there is no metamorphic low at Duval Lake.

Keywords: staurolite, grade of metamorphism, Burntwood Group, Kisseynew gneiss belt, Duval Lake, Manitoba.