Field relations, age, and tectonic setting of metamorphic and plutonic rocks in the Creignish Hills – North Mountain area, southwestern Cape Breton Island, Nova Scotia, Canada
作者: Chris E. WhiteSandra M. BarrDonald W. DavisDavid S. SwantonJohn W.F. KetchumPeter H. Reynolds
作者单位: 1Nova Scotia Department of Natural Resources.
刊名: Atlantic Geology, 2016, Vol.52 , pp.037-059
来源数据库: Atlantic Geoscience Society
DOI: 10.4138/atlgeol.2016.003
原始语种摘要: The Creignish Hills and North Mountain areas of southwestern Cape Breton Island consist mostly of Neoproterozoic rocks typical of the Ganderian Bras d’Or terrane. U-Pb ages presented here for detrital zircon in the Blues Brook Formation of the Creignish Hills confirm a depositional age no greater than about 600 Ma. Although it is possible that some components of the formation are much older, similarities in rock types and field relations suggest that this is not the case. It is likely that the equivalent Malagawatch Formation of the North Mountain area, as well as high-grade metasedimentary rocks of the Melford Formation and Chuggin Road complex in the Creignish Hills and Lime Hill gneiss complex in the North Mountain area, represent the same or stratigraphically equivalent units as the...
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  • tectonic 构造的
  • age 龄期
  • metamorphic 变质的
  • plutonic 深成的
  • southwestern 在西南的
  • terrane 地带
  • Canada 加拿大
  • relations 性行为
  • setting 浓缩
  • detrital 碎屑的