Abstract
Oils from reservoirs in Silurian strata from central and western Illinois can be correlated geochemically and isotopically to bitumen from the New Albany near the southern tip of Illinois. We believe that these oils migrated long distances, perhaps 100 km (62 mi) or more from the south or south-east. Migration probably occurred late in the basin's history, after basin sediments were fully compacted, in response to a regional northward flow system set up by tectonic uplift in the south. We suggest that the oil migrated through Devonian and Silurian carbonates along the weathered and karstified surface of a regional unconformity that formed during Kaskaskia deposition. -from Authors
| Original language | English (US) |
|---|---|
| Pages (from-to) | 925-945 |
| Number of pages | 21 |
| Journal | American Association of Petroleum Geologists Bulletin |
| Volume | 75 |
| Issue number | 5 |
| State | Published - 1991 |
ASJC Scopus subject areas
- Fuel Technology
- Energy Engineering and Power Technology
- Geology
- Geochemistry and Petrology
- Earth and Planetary Sciences (miscellaneous)