Paleoproterozoic deformation of the Racklan Orogeny, Slats Creek (106D/16) and Fairchild Lake (106C/13) map areas, Wernecke Mountains, Yukon

Three events of Paleoproterozoic deformation are recognized in schist of the Fairchild Lake Group (Wernecke Supergroup) in the Wernecke Mountains. The first event produced a chloritoid ± garnet and opaque porphyroblastic, chloritoid-chlorite-muscovite-quartz schist. Pressure-temperature conditions have been estimated to lie between 3-6 kbar and 450-550°C. The second event produced a crenulation, and the third generated kink bands. All of these features are crosscut by 1.60 Ga Wernecke Breccia. These events are regarded as products of the Racklan Orogeny, a Paleoproterozoic interval of orogenesis, which favourably correlates with the Fifteenmile Orogeny in the Ogilvie Mountains of western Yukon and the Forward Orogeny in the Northwest Territories.

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Contact Person {"en": "Yukon Geological Survey", "fr": "Yukon Geological Survey"}
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Open Canada Date Published 2011-04-04 00:00:00
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Open Canada Subject ["science_and_technology"]
Open Canada Keywords {"en": ["wernecke-supergroup", "ygs-import", "ygs-import-20250711", "ygs-publications", "yukon-geological-survey"], "fr-t-en": ["Supergroupe Wernecke", "importation d'ygs", "ygs-import-20250711", "publications de l'YGS", "enquête géologique du yukon"]}
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