데이터셋 상세
캐나다
New stratigraphic and provenance studies of Triassic sedimentary rocks in Yukon and northern British Columbia.
New fieldwork investigating the provenance and stratigraphic setting of Triassic sedimentary rocks in the northern Cordillera focused on previously documented, but largely unstudied, exposures overlying the Yukon-Tanana, Slide Mountain and Cassiar terranes. We report on the lithologies observed and samples collected from the Sheldon Lake, Quiet Lake and Glenlyon map areas of Yukon, and McDame map area of northern British Columbia. Our research goal is to characterize sediment source regions in the Triassic and constrain early Mesozoic basin development in the northern Cordillera. We interpret the Triassic sedimentary evolution in Yukon and northern British Columbia to be intimately tied to collision of the Yukon-Tanana terrane with the ancient Pacific margin by closing of the Slide Mountain ocean. Our new samples collected from Middle to Late Triassic strata will further constrain that collisional event and add to the database that consists mainly of Early to Middle Triassic miogeoclinal rocks.
데이터 정보
연관 데이터
Tectonics and metallogeny of the British Columbia, Yukon and Alaskan Cordillera, 1.8 Ga to the present
공공데이터포털
not_specified
Quaternary sedimentology and stratigraphy, Peel Plateau and Richardson Mountains, Yukon and N.W.T
공공데이터포털
not_specified
Continental fragments, mid-Paleozoic arcs and overlapping late Paleozoic arc and Triassic sedimentation in the Yukon-Tanana terrane of northern British Columbia and southern Yukon
공공데이터포털
for a copy of this paper please contact the Yukon Geological Survey; geology@gov.yk.ca.
Bedrock geology at the boundary between Yukon-Tanana and Cassiar terranes, Truitt Creek map area (NTS 105L/1), south-central Yukon
공공데이터포털
The Tummel fault zone, a northwest-trending belt of rocks of uncertain age and/or tectonic affinity, separates Paleozoic miogeoclinal strata of Cassiar Terrane from Yukon-Tanana Terrane metavolcanic and metasedimentary rocks. Northeast of the fault, Cassiar Terrane comprises pelitic and semipelitic rocks with rare amphibolite, which are correlated with the Kechika Group. These are overlain by carbonate correlated with the Askin Group. Southwest of the fault, in Yukon-Tanana Terrane, Devono-Mississippian siliciclastic rocks are overlain by Mississippian arc volcanic rocks. Granodiorite and diorite of the Telegraph Plutonic Suite (348-350 Ma) intrude the siliciclastic rocks. Foliated greenstone, leucogabbro intrusions, serpentinite and chert occur in the Tummel fault zone. The Early Cretaceous Glenlyon Batholith intrudes strata of Cassiar Terrane. Contact metamorphism recognized across the Tummel fault zone is interpreted to have been imposed by the Glenlyon Batholith. If correct, this interpretation requires that post-mid-Cretaceous displacement across the Tummel fault zone has been minimal (~5 km).
New U-Pb geochronology of Early Cretaceous porphyry and skarn mineralization in southwest Yukon
공공데이터포털
not_specified
Bedrock geology along the Duke River fault near Squaw Creek, Yukon and British Columbia (part of NTS 115A/03 and 114P/14)
공공데이터포털
not_specified
Geology and geochemistry of stratabound ore deposits in South-central Yukon Territory and southwestern District of Mackenzie, Northwest Territories
공공데이터포털
not_specified
Paleozoic stratigraphy, tectonics and metallogeny of the Pelly Mountains, Quiet Lake and Finlayson Lake map areas (NTS 105F and G), central Yukon: Project outline and preliminary field results
공공데이터포털
Paleozoic rocks of the Pelly Mountains, central Yukon, preserve greater than 150 m.y. of sedimentation, magmatism and base-metal mineralization. To identify secular trends in regional tectonics and metallogeny, a multi-year project on the stratigraphy of the Pelly Mountains in the Quiet Lake (105F) and Finlayson Lake (105G) map areas was initiated. Field studies during summer 2015 focused on two stratigraphic intervals: (1) mafic volcanic, volcaniclastic and clastic rock successions assigned to the Cambrian-Ordovician Cloutier and Groundhog formations (Kechika group); and (2) felsic volcanic, volcaniclastic and clastic rock successions assigned to the Devonian-Mississippian Black Slate and Felsic Volcanic formations (Seagull group). Cambrian-Ordovician strata were deposited in a marine environment characterized by episodic mafic volcanism and extensional tectonism. Devonian-Mississippian strata record the transition from an extensional turbidite basin to a metalliferous volcanic rift basin, and resemble key rock assemblages of the Selwyn basin (Earn Group) and Yukon-Tanana terrane (Grass Lakes and Wolverine Lake groups).
Bedrock geology of the Macmillan Pass area, Yukon and adjacent Northwest Territories
공공데이터포털
not_specified
Geochemical constraints on the provenance of pre-Mississippian sedimentary rocks in the North Slope subterrane of Yukon and Alaska
공공데이터포털
for a copy of this paper please contact the Yukon Geological Survey; geology@gov.yk.ca.
목록