00000nam 2200000za 4500 9.855985 CaOODSP 20251031142447 cr ||||||||||| 180430s2018 oncabd ob f000 0 eng d CaOODSP eng n-cn-bc M183-2/8370E-PDF McMechan, Margaret E. (Margaret Evaline), 1953- Triassic formations in Liard Basin, northeastern British Columbia [electronic resource] : sample descriptions, and detrital zircon U-Pb geochronology, methodology, results, and data tables / M.E. McMechan, F. Ferri, and W. Matthews. [Ottawa] : Natural Resources Canada, 2018. 14 p. : col. chart, col. ill., col. map. Open file ; 8370 This record only includes the Open File in PDF; the complete data set with all the files in various formats is available for free download at http://geoscan.nrcan.gc.ca/. Includes bibliographical references. “In the Liard Basin of western Canada, Lower and Middle Triassic aged strata comprise a northeasterly sourced, coarsening upward clastic wedge that is overlain by mixed clastic and carbonate units of Late Ladinian to Norian age. This report provides sample information, detrital zircon U-Pb geochronology methodology, results and data tables for a suite of seven samples collected from Lower Triassic to Carnian formations in western Liard Basin. These data show there was no western sourced material and suggest that the clastic material was recycled primarily from the Caledonian and Ellsemerian clastic wedges and the high Arctic. When combined with previously published results for 5 additional samples, they provide a robust reference frame for the Lower Triassic to Carnian succession of the Liard basin”--Abstract, p. 1. Shields (Geology) Geochronology Liard River Watershed Ferri, Filippo, 1959- Matthews, W. Canada. Natural Resources Canada. Geological Survey of Canada. Open file (Geological Survey of Canada) 8370. (CaOODSP)9.506878 PDF 1.61 MB https://publications.gc.ca/collections/collection_2018/rncan-nrcan/m183-2/M183-2-8370-eng.pdf 306629