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| Content Provider | Springer Nature Link |
|---|---|
| Author | Tu, Qiang Schröder Adams, Claudia J. Craig, Jim |
| Copyright Year | 2007 |
| Abstract | The Albian to Santonian Colorado Group in the heavy oil area of Cold Lake, east-central Alberta represents a relatively condensed section of shale-dominated sedimentation within the Western Interior Sea. These shales form the cap rock to the underlying Clearwater and Grand Rapids formations that are exploited for bitumen extraction. Two cores covering the entire Colorado Group provide a unique opportunity for establishment of a stratigraphic reference in an area that has received attention only for its heavy oil-bearing Mannville Group. Based on sedimentology, geochemistry, micropaleontology, nannofossils, and wireline log data, the Colorado Group was subdivided into the Joli Fou, Viking, Westgate, Fish Scales, Belle Fourche, Second White Specks, and Niobrara formations. The Niobrara Formation was subdivided further into the Verger Member, informal Cold Lake member, and First White Specks Member. Because of this region’s small accommodation space and distance to sources of coarse clastic sediment, disconformities are indicated lithologically by bioclastic layers and missing biozones. Foraminiferal subzones revealed two erosional boundaries associated with the Viking Formation. Faunal and floral evidence coupled with wireline log correlations suggest that the Middle to Upper Turonian Carlile Formation, as described from southeastern Alberta, is missing. That extends the Middle Turonian to Coniacian unconformity, as recognized in central Saskatchewan, westwards into Alberta. |
| Starting Page | 17 |
| Ending Page | 30 |
| Page Count | 14 |
| File Format | |
| ISSN | 15207439 |
| Journal | Natural Resources Research |
| Volume Number | 16 |
| Issue Number | 1 |
| e-ISSN | 15738981 |
| Language | English |
| Publisher | Kluwer Academic Publishers-Plenum Publishers |
| Publisher Date | 2007-04-27 |
| Publisher Place | New York |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Stratigraphy Colorado Group Cretaceous western Canada shale Hydrogeology Sedimentology Economic Geology Math. Applications in Geosciences |
| Content Type | Text |
| Resource Type | Article |
| Subject | Environmental Science |
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