Skip To Content

TitleThe Athabasca oil sands - a regional geological perspective Fort McMurray area, Alberta, Canada
Publication TypeJournal Article
Year of Publication2006
AuthorsHein, F. J., & Cotterill D. K.
Volume15
Issue2
Pagination17 pages
Date Published02/2006
PublisherNatural Resources Research
Publication Languageeng
KeywordsERCB, oil sand characteristics
Abstract

Most of the bitumen in the Athabasca deposit is hosted within fluvial, estuarine, and marginal marine deposits of the Lower Cretaceous Wabiskaw-McMurray succession. The present study is an integration of recent outcrop and subsurface studies, mainly focused in the Fort McMurray area of northeastern Alberta. The basis of the regional geologic framework includes outcrop sections (78), detailed core descriptions (165), and a net of subsurface wire-line log sections (14), all framed within modern concepts of regional correlation and sequence-stratigraphy.
The paleogeographic evolution of the Athabasca Wabiskaw-McMurray succession includes five main phases: (1) Lower McMurray fluvial as lowstand deposits; (2) the lower part of the Upper McMurray fluvio-estuarine channel complexes which formed during early transgressive conditions; (3) the upper part of the Upper McMurray A sequences as relict bay-fill and marginal marine deposits formed during early and middle transgressive phases; (4) Wabiskaw D valley-fill developed during a relative sea-level drop at the end of McMurray time (valley-incision phase), which was backfilled during the ensuing transgression; (5) Wabiskaw D regional marine shale, deposited during widespread flooding of the main McMurray-Wabiskaw transgression; and (6) Wabiskaw C deposits formed during continued transgression or early regressive pulses. The regional geological framework has both economic and academic significance, providing better documentation and understanding of the compartmentalization of the oil sands mainly the result of the inherent geological heterogeneity of the Wabiskaw-McMurray succession. Such regional correlation and framework will aid in predicting subsurface and surface reservoir quality and in increased understanding of marginal marine and non-marine sequence stratigraphy.

URLhttps://www.researchgate.net/profile/Frances_Hein/publication/227296747/links/55088a4e0cf26ff55f830f4a.pdf
Locational Keywords

Athabasca deposit, Fort McMurray, northeastern Alberta, Athabasca Oil Sands Region (AOSR)

Active Link

http://www.worldcat.org/oclc/437758587

Group

OSEMB

Citation Key53898

Enter keywords or search terms and press Search

Search this site


Subscribe to the site

Syndicate content

Bookmark and Share