Geology, Toad River (northeast), British Columbia / [by] M.E. McMechan.: M183-1/150-2013E-PDF
"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.
Permanent link to this Catalogue record:
publications.gc.ca/pub?id=9.576731&sl=0
| Department/Agency | Canada. Natural Resources Canada. Geological Survey of Canada. |
|---|---|
| Title | Geology, Toad River (northeast), British Columbia / [by] M.E. McMechan. |
| Series title | Canadian geoscience map ; 150 |
| Publication type | Series - View Master Record |
| Language | [English] |
| Format | Electronic |
| Electronic document | |
| Note(s) | Includes bibliographical references. Includes abstract in French. |
| Publishing information | Ottawa : Natural Resources Canada, c2013. |
| Author / Contributor | McMechan, Margaret E. (Margaret Evaline), 1953- |
| Description | 1 map : col. |
| ISBN | 978-1-100-22368-1 |
| Catalogue number |
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| Departmental catalogue number | 293264 |
| Edition | Preliminary version |
| Cartographic data | Scale 1:100,000 |
| Subject terms | Geological maps Rivers Surficial geology |