000 02899nam  2200397zi 4500
0019.895425
003CaOODSP
00520230131161139
006m     o  d f      
007cr cn|||||||||
008210118t20202020oncab   ob   f000 0 eng d
040 |aCaOODSP|beng|erda|cCaOODSP
043 |an-cn-nu
0861 |aM183-2/8625E-PDF
1001 |aCamacho, Alfredo, |eauthor.
24510|a⁴⁰Ar/³⁹Ar hornblende and biotite cooling ages for metaplutonic rocks of the central Thelon tectonic zone, Nunavut / |cA. Camacho, R.G. Berman, and M. Sanborn-Barrie.
264 1|aOttawa, Ontario : |bGeological Survey of Canada, |c2020.
264 4|c©2020
300 |a1 online resource (77 pages) : |bcolour illustrations, colour maps.
336 |atext|btxt|2rdacontent
337 |acomputer|bc|2rdamedia
338 |aonline resource|bcr|2rdacarrier
4901 |aOpen file ; |v8625
500 |aThis record only includes the Open File report in PDF; the complete data set with all the files in various formats is available for free download at http://geoscan.nrcan.gc.ca/.
504 |aIncludes bibliographical references (pages 75-77).
520 |a"The Thelon tectonic zone (Ttz) is a ~500 km long, northeast-striking geophysical and geological feature separating the Slave and Rae cratons of the Canadian shield. The tectonic significance of the Ttz is uncertain, having been interpreted both as a Paleoproterozoic suture and as an intracontinental orogenic belt. Better understanding of the tectonic setting of the Ttz and the control of its crustal architecture on economic potential were primary goals of the Geomapping for Energy and Minerals (GEM) Thelon tectonic zone research activity. This report presents 43 new ⁴⁰Ar/³⁹Ar hornblende and biotite analyses for metaplutonic rock samples from the central Ttz and adjacent regions, Nunavut. Samples were collected during three field seasons (2012, 2014, and 2016) in order to: (i) delineate domains with differing cooling histories and (ii) improve understanding of the differences in timing of regional metamorphism and exhumation across the Ttz. These data will be used in the future to evaluate and refine tectonic models for the evolution of the Ttz"—Introduction, page 1.
650 0|aArgon-argon dating|zNunavut.
650 0|aGeological time|zNunavut.
650 0|aMetamorphic rocks|zNunavut.
650 6|aDatation|xMéthode argon 40-argon 39|zNunuvat.
650 6|aGéochronologie|zNunavut.
650 6|aRoches métamorphiques|zNunavut.
7102 |aGeological Survey of Canada, |eissuing body.
830#0|aOpen file (Geological Survey of Canada)|v8625.|w(CaOODSP)9.506878
85640|qPDF|s25.14 MB|uhttps://publications.gc.ca/collections/collection_2021/rncan-nrcan/m183-2/M183-2-8625-eng.pdf|z(Open File report)
8564 |qHTML|sN/A|uhttps://doi.org/10.4095/315135|z(complete data set)