000 02385nem  2200385za 4500
0019.576731
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008150406s2013    onc    bd a  fo 0   eng d
020 |a978-1-100-22368-1
040 |aCaOODSP|beng
041 |aeng|bfre
043 |an-cn-bc
0861 |aM183-1/150-2013E-PDF
1001 |aMcMechan, Margaret E. |q(Margaret Evaline), |d1953-
24510|aGeology, Toad River (northeast), British Columbia |h[electronic resource] / |c[by] M.E. McMechan.
250 |aPreliminary version
255 |aScale 1:100,000
260 |aOttawa : |bNatural Resources Canada, |cc2013.
300 |a1 map : |bcol.
4901 |aCanadian geoscience map ; |v150
504 |aIncludes bibliographical references.
5203 |a"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.
546 |aIncludes abstract in French.
590 |a14-16|b2014-04-17
69207|2gccst|aGeological maps
69207|2gccst|aRivers
69207|2gccst|aSurficial geology
7101 |aCanada. |bNatural Resources Canada.
7102 |aGeological Survey of Canada.
830#0|aCanadian geoscience map ;|v150.|w(CaOODSP)9.506260
85640|qPDF|s9.34 MB|uhttps://publications.gc.ca/collections/collection_2014/rncan-nrcan/M183-1-150-2013-eng.pdf
85640|qHTML|sN/A|uhttps://doi.org/10.4095/293264