Quick Search:    advanced search

GSW Home   GeoRef Home   My GSW Alerts   Contact GSW   About GSW   Journals List   Help

This Article Résumé Figures Only Full Text Full Text (PDF) Submit a response Alert me when this article is cited Alert me when eLetters are posted Alert me if a correction is posted Citation Map Services Email this article to a friend Similar articles in this journal Similar articles in Web of Science Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via HighWire Citing Articles via Web of Science (4) Citing Articles via Google Scholar Google Scholar Articles by Schröder-Adams, C. J. Articles by Pedersen, P. K. Search for Related Content GeoRef GeoRef Citation

Litho- and biofacies analyses of the Buckinghorse Formation: the Albian Western Interior Sea in northeastern British Columbia (Canada)

Dept. of Earth Sciences, Carleton University, 1125 Colonel By Drive, Ottawa, ON K1S 5B6

Per Kent Pedersen

Petroleum Geology, Saskatchewan Industry and Resources, 201 Dewdney Avenue East, Regina, SK S4N 4G3

During Albian time the Western Interior Sea formed an embayment of the northern Boreal Sea and paleogeography, depositional processes and relative sea level were controlled by a global sea level rise and active thrusting within the Cordillera. Along the Sikanni Chief River in northeastern British Columbia, the Buckinghorse Formation is exposed as an over 1000 m thick marine mudstone package that was deposited in the western foredeep of the Western Canada Sedimentary Basin. The section appears lithologically relatively uniform, however, close examination allowed recognition of seven lithofacies responding to subtle changes in shelf to upper offshore depositional environments. On regional wireline log cross-sections seven major flooding surfaces that subdivide the Buckinghorse Formation into six depositional sequences are widely correlative. These are independent from lithofacies. A new informal foraminiferal subzonation is proposed and correlated to the existing standard zonation based mainly on the intensely studied Peace River region to the south. In the northern continuous offshore setting foraminiferal assemblages responded with gradual faunal changeover. Each marine transgression brought new, mainly Boreal taxa to the basin. The "Viking" marker, described and faunally distinguished in the Hudson Hope area within the Hasler shale, is identified in the Sikanni Chief River area as a distinct silt to fine sandstone interval with a change from the Haplophragmoides gigas Zone to the Miliammina manitobensis Zone. On well logs this horizon is a major flooding surface, correlated with the top of the Paddy Member.

This article has been cited by other articles:

				X. Roca, J. R. Rylaarsdam, H. Zhang, B. L. Varban, C. F. Sisulak, K. Bastedo, and A. G. Plint An allostratigraphic correlation of Lower Colorado Group (Albian) and equivalent strata in Alberta and British Columbia, and Cenomanian rocks of the Upper Colorado Group in southern Alberta Bulletin of Canadian Petroleum Geology, December 1, 2008; 56(4): 259 - 299. [Abstract] [Full Text] [PDF]

				G. R.L. Chalmers and R. M. Bustin Lower Cretaceous gas shales in northeastern British Columbia, Part II: evaluation of regional potential gas resources Bulletin of Canadian Petroleum Geology, March 1, 2008; 56(1): 22 - 61. [Abstract] [Full Text] [PDF]

				D.M.S. Jowett and C.J. Schroder-Adams Paleoenvironments and regional stratigraphic framework of the Middle-Upper Albian Lepine Formation in the Liard Basin, Northern Canada Bulletin of Canadian Petroleum Geology, March 1, 2005; 53(1): 25 - 50. [Abstract] [Full Text] [PDF]