00000nem 2200000za 4500 9.576731 CaOODSP 20230131161133 m go c f cr ||||||||||| 150406s2013 onc bd a fo 0 eng d 978-1-100-22368-1 CaOODSP eng eng fre n-cn-bc M183-1/150-2013E-PDF McMechan, Margaret E. (Margaret Evaline), 1953- Geology, Toad River (northeast), British Columbia [electronic resource] / [by] M.E. McMechan. Preliminary version Scale 1:100,000 Ottawa : Natural Resources Canada, c2013. 1 map : col. Canadian geoscience map ; 150 Includes bibliographical references. "The Toad River northeast area (NTS 94-N/NE) in western Liard Basin is underlain by a thick Mississippian to Cretaceous clastic-dominated succession deformed into a few north- or northeast-trending folds. Local abrupt changes in the thickness of Permian sandstone-carbonate and chert units indicate episodes of older block faulting. A major unconformity at the base of the Cretaceous has removed much of the Triassic succession preserved to the southwest. A prominent escarpment capped by Upper Cretaceous Dunvegan conglomerate marks the west limb of the Liard syncline. To the east, poorly exposed Upper Cretaceous conglomerate, shale, and sandstone outline gentle folds. In the Liard Fold and Thrust Belt to the west, four prominent, south-plunging anticlines occur near 60°N. West-directed backthrusts, that follow the locus of older structures and die out southward, offset their steeper west limb at Paleozoic levels. Significant natural gas reserves occur in middle Devonian carbonate beneath the Beaver River Anticline"--Abstract. Includes abstract in French. 14-16 2014-04-17 gccst Geological maps gccst Rivers gccst Surficial geology Canada. Natural Resources Canada. Geological Survey of Canada. Canadian geoscience map ; 150. (CaOODSP)9.506260 PDF 9.34 MB https://publications.gc.ca/collections/collection_2014/rncan-nrcan/M183-1-150-2013-eng.pdf HTML N/A https://doi.org/10.4095/293264 293264