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UW 1073 - Martinez, Contra Costa County, California, USA
| Lat/Long (Decimal) | 38.002,-122.129 |
|---|---|
| Co-ordinates Derivation | based on nearby landmark |
| Given Location | California, United States |
| Mindat.org Region (for given coordinates) | Contra Costa County, California, USA |
Collections
| Collection | Reference | Stratigraphic Name | Comments | Lithology | Age |
|---|---|---|---|---|---|
| UW 1073 - Martinez | Weaver C. E. (1949) | Martinez - Capay Shale | From upper near top of shale unit. Foraminifera suggest a "Capay" stage age. Capay local stage = Ypresian. The Martinez Formation rests with a slight unconformity on the Chico Formation and grades in Eocene shales. The formation is approximately 3100 ft thick with a 1500 ft lower sandstone unit and 1600 ft upper sandy shale, which is dated as Early Eocene. | "shale" | 56 - 47.8 Ma Eocene |
Recorded Fossils
References
| Weaver C. E. (1949) Geology of the coast ranges immediately north of the San Francisco Bay region, California, Geological Society of America Memoir 35 |
Data courtesy of: PBDB: The Paleobiology Database, Creative Commons CC-BY licenced. , GBIF: the Global Biodiversity Information Facility, various licences, iDigBio, various licences, and EOL: The Encyclopedia of Life (Open Data Public Domain). Because fossils are made of minerals too!
