Publication information

Geological Survey of Canada
Open File 8625

40Ar/39Ar hornblende and biotite cooling ages for metaplutonic rocks of the central Thelon tectonic zone, Nunavut

A. Camacho, R.G. Berman, and M. Sanborn-Barrie

© Her Majesty the Queen in Right of Canada, as represented by the Minister of Natural Resources, 2020

Permanent link: https://doi.org/10.4095/315135

Publications in this series have not been edited; they are released as submitted by the author.

Recommended citation

Camacho, A., Berman, R.G., and Sanborn-Barrie, M., 2019. 40Ar/39Ar hornblende and biotite cooling ages 
     for metaplutonic rocks of the central Thelon tectonic zone, Nunavut; Geological Survey of Canada, 
    Open File 8625, 1 .zip file. https://doi.org/10.4095/315135

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Contents

This multicomponent Open File report presents 43 new 40Ar/39Ar analyses of single hornblende and biotite crystals for metaplutonic rocks from the central Thelon tectonic zone (Ttz) and adjacent regions, Nunavut.  Samples were collected during three field seasons (2012, 2014, and 2016) in order to delineate domains with differing cooling histories to improve understanding of the differences in timing of regional metamorphism and exhumation across the Ttz.  This analytical work was conducted as part of the Geomapping for Energy and Minerals (GEM) program of the Geological Survey of Canada. 
Interpretations of the 40Ar/39Ar results for individual minerals are given in the Discussion of Results section of the report.  Full data tables are provided in Appendix A.  A summary of the results and age interpretations for all samples are presented in Table 1 (separate file). 

Directory structure

of_8625_readme.rtf (this file)
of_8625.pdf (report)
of_8625_Table 1 Summary of results and age interpretations.xlsx
of_8625_Appendix A 40Ar/39Ar full analytical results.xlsx

Author contact information

A. Camacho (alfredo.camacho@umanitoba.ca)
University of Manitoba
66 Chancellors Cir
Winnipeg, Manitoba
R3T 2N2

R.G. Berman (rob.berman@canada.ca)
Geological Survey of Canada
601 Booth Street
Ottawa, Ontario
K1A 0E8

M. Sanborn-Barrie (mary.sanborn-barrie@canada.ca)
Geological Survey of Canada
601 Booth Street
Ottawa, Ontario
K1A 0E8

Availability information

This publication is available for free download through GEOSCAN (https://geoscan.nrcan.gc.ca/).

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