Rifting history and structural development of the continental margin north of Alaska
By: Arthur Grantz and S. D. May
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Abstract
Seismic-reflection profiles in the Alaskan Beaufort Sea and onshore geology indicate that the continental margin north of Alaska is of Atlantic type. Rifting appears to have begun in earliest Jurassic time, about 190 to 185 m.y. ago, when crustal extension created a rift-valley system beneath the Beaufort shelf and part of the adjacent coastal plain. Subsequent crustal warming caused rift-margin uplift and erosion, created a breakup unconformity, and initiated breakup and seafloor spreading in the Canada Basin about 125 m.y. ago. Subsequent cooling caused rapid subsidence of the margin, which was followed by vigorous progradation of the present continental terrace of the Beaufort Sea beginning in Albian time.
| Publication type | Book chapter |
|---|---|
| Publication Subtype | Book Chapter |
| Title | Rifting history and structural development of the continental margin north of Alaska |
| Year Published | 1982 |
| Language | English |
| Publisher | American Association of Petroleum Geologists |
| Description | 24 p. |
| Larger Work Type | Book |
| Larger Work Subtype | Monograph |
| Larger Work Title | M 34: Studies in continental margin geology |
| First page | 77 |
| Last page | 100 |
| Google Analytic Metrics | Metrics page |