Age of the Mesozoic oceanic crust in the California Coast Ranges
Bulletin of the Geological Society of America
By: Marvin A. Lanphere
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Abstract
K-Ar ages of approximately 155 m.y. were measured on minerals from ophiolites at two localities in the California Coast Ranges. Upper Jurassic rocks of the Great Valley sequence are in depositional contact with underlying ophiolites, which are interpreted as Mesozoic oceanic crust that formed during differentiation of mantle material at a spreading ridge some 15 m.y. before deposition of the Great Valley sequence began.
Study Area
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Age of the Mesozoic oceanic crust in the California Coast Ranges |
| Series title | Bulletin of the Geological Society of America |
| DOI | 10.1130/0016-7606(1971)82[3209:AOTMOC]2.0.CO;2 |
| Volume | 82 |
| Issue | 11 |
| Year Published | 1971 |
| Language | English |
| Publisher | Geological Society of America |
| Description | 3 p. |
| First page | 3209 |
| Last page | 3211 |
| Country | United States |
| State | California |
| Other Geospatial | Coast Ranges |
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