Geology, geochronology, thermobarometry, and tectonic evolution of the Queen Maud block, Churchill craton, Nunavut, Canada

• Author / Creator

  Tersmette, Daniel B.

• The Queen Maud block is divided into two crustal belts. The western Perry River belt is dominated by Mesoarchean to Neoarchean granitic gneisses and supracrustal rocks; it was incorporated into the Rae domain by at least 2.46 Ga. The eastern Paalliq belt is dominated by the 2.52-2.45 Ga Queen Maud granitoids and the 2.45-2.39 Ga Sherman supracrustal sequence, both of which were formed on Neoarchean crust of the Rae domain. Slave-Churchill collision and convergence occurred ca. 2.43-2.35 Ga resulting in granulite-facies metamorphism, regional scale N-S trending strike-slip shearing, and minor crustal melting in the Queen Maud block. Post-collisional magmatism occurred ca. 2.32 Ga. Between 2.3 and 2.1 Ga mafic magmatism and monazite growth occurred in the western Queen Maud block, possibly as a result of continental rifting. The 2.01-1.91 Ga Thelon Orogeny affects only the western-most Queen Maud block, where 1.93 Ga metamorphism and very weak deformation are preserved.

• Subjects / Keywords

  • Churchill craton
  • Thermobarometry
  • Queen Maud block
  • Geochronology

• Graduation date

  Spring 2012

• Type of Item

  Thesis

• Degree

  Master of Science

• DOI

  https://doi.org/10.7939/R3WH6C

• License

  This thesis is made available by the University of Alberta Libraries with permission of the copyright owner solely for non-commercial purposes. This thesis, or any portion thereof, may not otherwise be copied or reproduced without the written consent of the copyright owner, except to the extent permitted by Canadian copyright law.