Petroleum geology of Kodiak Shelf, Alaska.
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Abstract
Organic geochemical data show that Cenozoic rocks on Kodiak Island, in Albatross basin, and under the continental slope generally contain less than 0.5 wt. % organic carbon. Moreover, kerogen from all rocks analyzed is predominantly (60 to 100%) herbaceous; woody and coaly kerogens are present in secondary (20 to 40%) amounts. Most strata in shelf basins are thermally immature; however, Eocene and Oligocene strata, which probably floor the shelf basins, are mature on the basis of comparison with coeval strata onshore. Eocene and Oligocene rocks have poor reservoir properties; the best reservoirs are probably in upper Miocene or Pliocene and younger rocks. Potential traps for hydrocarbons include Tugidak uplift, parts of Albatross Bank, structures in the central-shelf upli t, and Portlock anticline. Overall, unless hydrocarbon source rock properties improve offshore, gas and gas condensate are the most likely hydrocarbons to have been generated.
Study Area
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Petroleum geology of Kodiak Shelf, Alaska. |
| Series title | American Association of Petroleum Geologists Bulletin |
| DOI | 10.1306/2F919454-16CE-11D7-8645000102C1865D |
| Volume | 64 |
| Issue | 8 |
| Year Published | 1980 |
| Language | English |
| Publisher | American Association of Petroleum Geologists |
| Description | 18 p. |
| First page | 1140 |
| Last page | 1157 |
| Country | United States |
| State | Alaska |
| Other Geospatial | Kodiak Shelf |
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