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TitleSyn-magmatic deformation and structural relationships within Jurassic granitoid rocks of the Aishihik batholith, Yukon: 2015 report of activities for GEM-2 Cordillera Project
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AuthorChapman, J B
SourceGeological Survey of Canada, Open File 7961, 2015, 12 pages, https://doi.org/10.4095/297300
Year2015
PublisherNatural Resources Canada
Documentopen file
Lang.English
Mediaon-line; digital
RelatedThis publication is related to Kellett, D A; Ryan, J J; Zagorevski, A; Colpron, M; Joyce, N; Zwingmann, H; Kislitsyn, R; (2017). Report of activities, 2017, for Yukon tectonic evolution - late Mesozoic to Tertiary: GEM2 Cordillera Project, Geological Survey of Canada, Open File 8306
File formatpdf
ProvinceYukon
NTS115H/09; 115H/10; 115H/11; 115H/12; 115H/13; 115H/14; 115H/15; 115H/16
AreaNorthern Cordillera; Nisling River; Razor Mountain; Kirkland Creek
Lat/Long WENS-138.0000 -136.0000 62.2500 61.5000
Subjectsigneous and metamorphic petrology; structural geology; magmatism; magmatic deposits; magmatic rocks; structural interpretations; structural analyses; structural domains; metamorphic rocks; deformation; plutonic rocks; granites; Yukon-Tanana Terrane; Paleozoic
Illustrationslocation maps; photographs
ProgramWestern Cordillera, Regional porphyry transitions, GEM2: Geo-mapping for Energy and Minerals
Released2015 11 17
Abstract(Summary)
Granitoid igneous rocks formed 205-180 million years ago (late Triassic to early Jurassic) host Yukon's only operating copper mine and other significant copper and gold deposits. However, exploration for additional deposits is hampered by many factors, including a lack of knowledge of the controls that determine the location of any individual deposit. Copper minerals at Minto mine and the Carmack Copper exploration property, two of the largest deposits in Yukon, are hosted within narrow corridors of highly-deformed rocks, within much larger bodies of similar but undeformed rock. Similar deformation has previously been seen within granitoid rocks in the western Aishihik batholith, interpreted to have been caused during their initial formation. This study aims to examine northern and eastern portions of the Aishihik batholith, to determine the regional extent of this deformation, and to assess the relative roles of initial formation and later tectonic processes.
Summary(Plain Language Summary, not published)
Granite-like igneous rocks formed 180-205 million years ago host Yukon's only operating copper mine and other significant copper and gold deposits. However, exploration for additional deposits is hampered by a lack of knowledge of the controls that determine the location of any individual deposit. Copper minerals at two of the largest deposits in Yukon are hosted within narrow corridors of highly-deformed rocks, within much larger bodies of similar but undeformed rock. It is not clear when these rocks became deformed, nor what the driving processes were. Similar deformation has previously been seen within granitoid rocks in the western Aishihik batholith, interpreted to have been caused during their initial formation. This study aims to examine northern and eastern portions of the Aishihik batholith, to determine the regional extent of this deformation, and to assess the relative roles of initial formation and later tectonic processes.
GEOSCAN ID297300