Trench-fill submarine-fan facies associations of the Upper Cretaceous Chugach terrane, southern Alaska
Geo-Marine Letters
By: T. H. Nilsen
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Abstract
Turbidites of the Upper Cretaceous Chugach terrane of southern Alaska were deposited in a trench during northward-directed subduction. The fault-bounded outcrop belt of the Chugach terrane is about 2000-km long and 100-km wide and was accreted to Alaska during the Cenozoic. Turbidites are at least 5000 m thick, are extensively deformed, have been regionally metamorphosed, and have been intruded by anatectic granites. Facies associations indicate an east-to-west progression from inner-fan to middle-fan, outer-fan, fan-fringe, and basin-plain deposits. To the north is a marginal trench-slope facies association and a basin. ?? 1984 Springer-Verlag New York Inc.
Suggested Citation
Nilsen, T.H., 1984, Trench-fill submarine-fan facies associations of the Upper Cretaceous Chugach terrane, southern Alaska: Geo-Marine Letters, v. 3, no. 2-4, p. 179-185, https://doi.org/10.1007/BF02462465.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Trench-fill submarine-fan facies associations of the Upper Cretaceous Chugach terrane, southern Alaska |
| Series title | Geo-Marine Letters |
| DOI | 10.1007/BF02462465 |
| Volume | 3 |
| Issue | 2-4 |
| Year Published | 1984 |
| Language | English |
| Publisher | Springer-Verlag |
| Larger Work Type | Article |
| Larger Work Subtype | Journal Article |
| Larger Work Title | Geo-Marine Letters |
| First page | 179 |
| Last page | 185 |