|Title||Geology, Mount Joyal, Yukon|
|Author||Lane, L S|
|Source||Geological Survey of Canada, Canadian Geoscience Map 73, 2013, 1 sheet, https://doi.org/10.4095/290068|
|Publisher||Natural Resources Canada|
|Map Info.||geological, bedrock geology, structural features, 1:50,000|
|Projection||Universal Transverse Mercator Projection, zone 8 (NAD83)|
|Related||This publication is superceded by Lane, L S; (2013).
Geology, Mount Joyal, Yukon, Geological Survey of Canada, Canadian Geoscience Map no. 73, ed. 2, Prelim. |
|File format||rtf; pdf; shp; xls; xml; JPEG2000|
|Lat/Long WENS||-137.0000 -136.5000 66.7500 66.5000|
|Subjects||stratigraphy; structural geology; metamorphism; bedrock geology; structural features; folds; faults; deformation; sedimentary rocks; sandstones; shales; limestones; Cody Creek Formation; Burnthill Creek
Formation; Fishing Branch Formation; Parkin Formation; Whitestone River Formation; Ettrain Formation; Hart River Formation; Ford Lake Shale; Mesozoic; Cretaceous; Paleozoic; Carboniferous; Devonian|
|Program||Yukon Sedimentary Basins, GEM:
Geo-mapping for Energy and Minerals|
|Released||2013 04 25|
|Abstract||This map is dominated by a broad anticline-syncline fold pair. The Tuttle anticline and North and South Tuttle synclines are developed in shale and coarse clastic rocks of the uppermost Imperial and
overlying Tuttle formations. Biostratigraphic ages vary from Late Frasnian (Late Devonian) to Viséan (Early Carboniferous). Along the east margin of the map area, the Deception fault juxtaposes the middle, sandy part of the Imperial Formation, of
Frasnian to early Famennian age, against the Tuttle Formation. A distinct thermal maturity discontinuity occurs across the fault, with rocks to the east having vitrinite reflectances (Ro) of 1.16-1.3% whereas those to the west have Ro = 0.7-0.8%.
Seismic reflection data suggest that the fault has a moderate eastward dip. Taken together, these data indicate that the Deception Fault is a substantial thrust fault. Sandstone and conglomerate of the Tuttle Formation display rapid lateral
variations in thickness and facies. This is reflected in the delineation of four mappable lithofacies with no specific stratigraphic order. Although poor exposure precludes a definitive explanation, a channellized depositional system is
|Summary||(Plain Language Summary, not published)|
This new 1:50,000 scale map is a product of the Geo-mapping for Energy and Minerals (GEM) Program. The area has never been mapped except at an initial
reconnaissance scale. The new map provides important new insights on the sedimentary geology of Paleozoic rocks, in an area of current interest for petroleum exploration.