Determining the age and depositional model of the Doig Phosphate Zone in northeastern British Columbia using conodont biostratigraphy

Abstract

Research Article| June 01, 2015 Determining the age and depositional model of the Doig Phosphate Zone in northeastern British Columbia using conodont biostratigraphy M.L. Golding; M.L. Golding Department of Earth, Ocean and Atmospheric Sciences, University of British Columbia, 2020-2207 Main Mall, Vancouver, BC V6T 1Z4, Canada Search for other works by this author on: GSW Google Scholar M.J. Orchard; M.J. Orchard Natural Resources Canada - Geological Survey of Canada, 625 Robson Street Vancouver, BC V6B 5J3, Canada Search for other works by this author on: GSW Google Scholar J.-P. Zonneveld; J.-P. Zonneveld Ichnology Research Group, Department of Earth and Atmospheric Sciences, University of Alberta, Edmonton, AB T6G 2E3, Canada Search for other works by this author on: GSW Google Scholar N.S.F. Wilson N.S.F. Wilson Murphy Sarawak Oil Company Ltd., Tower 2, Petronas Twin Towers, KLCC, Kuala Lumpur, Malaysia 50088 Search for other works by this author on: GSW Google Scholar Author and Article Information M.L. Golding Department of Earth, Ocean and Atmospheric Sciences, University of British Columbia, 2020-2207 Main Mall, Vancouver, BC V6T 1Z4, Canada M.J. Orchard Natural Resources Canada - Geological Survey of Canada, 625 Robson Street Vancouver, BC V6B 5J3, Canada J.-P. Zonneveld Ichnology Research Group, Department of Earth and Atmospheric Sciences, University of Alberta, Edmonton, AB T6G 2E3, Canada N.S.F. Wilson Murphy Sarawak Oil Company Ltd., Tower 2, Petronas Twin Towers, KLCC, Kuala Lumpur, Malaysia 50088 Publisher: Canadian Society of Petroleum Geologists Received: 18 Jul 2014 Accepted: 01 May 2015 First Online: 12 Jul 2017 Online Issn: 2368-0261 Print Issn: 0007-4802 © the Society of Canadian Petroleum Geologists Bulletin of Canadian Petroleum Geology (2015) 63 (2): 143–170. https://doi.org/10.2113/gscpgbull.63.2.143 Article history Received: 18 Jul 2014 Accepted: 01 May 2015 First Online: 12 Jul 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation M.L. Golding, M.J. Orchard, J.-P. Zonneveld, N.S.F. Wilson; Determining the age and depositional model of the Doig Phosphate Zone in northeastern British Columbia using conodont biostratigraphy. Bulletin of Canadian Petroleum Geology 2015;; 63 (2): 143–170. doi: https://doi.org/10.2113/gscpgbull.63.2.143 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyBulletin of Canadian Petroleum Geology Search Advanced Search Abstract Conodont biostratigraphy of the upper Montney and Doig formations in the subsurface of northeastern British Columbia provides the first age constraints on the boundary between these two formations. Previously presumed to be broadly but uniformly equivalent to the Spathian-Anisian boundary, it is shown herein to be highly diachronous, ranging from Spathian to Middle Anisian in age. It is oldest in the Altares area (at 56.201389 N; 121.906667 W) and youngest in the Dawson area (at 55.846389 N; 120.203333 W). The fact that the Montney-Doig boundary is oldest in the centre of the study area and younger in all directions suggests that the basal Doig Formation does not represent simple west-east transgression as previously thought. Rather, the Doig Formation was apparently deposited in the Altares region first and transgression must have proceeded away from this point. The lowest part of the Doig Formation, the Doig Phosphate Zone, has long been recognised as a condensed horizon. However, it is not condensed equally throughout northeastern British Columbia. It is most condensed in the Swan and eastern Groundbirch areas, and most expanded in the Altares and western Groundbirch areas. Together, these observations support the presence of palaeo-highs within and to the west of the Western Canada Sedimentary Basin during the Middle Triassic, a hypothesis that has been proposed previously on the basis of sedimentary thickness variation and provenance studies. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.