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F83 - Silverado Formation, Orange County, California, USA
Lat/Long (Decimal) | 33.8569,-117.818 |
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Co-ordinates Derivation | based on nearby landmark |
Given Location | California, United States |
Mindat.org Region (for given coordinates) | Orange County, California, USA |
Collections
Collection | Reference | Stratigraphic Name | Comments | Lithology | Age |
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F83 - Silverado Formation, Santa Ana Mountains | Schoellhamer J. E., Vedder J. G., et al (1981) | Silverado | The type section suggests a thickness of around 350 m for the Silverado Formation, which lies unconformably upon the Late Cretaceous Williams Formation and Ladd Formation, and is overlain unconformably by the Santiago Formaton. The Silverado Formation is given a Paleocene age on the basis of macrofauna (sparse index taxa), but more finely assigned by McCulloh et al. (2000) to the Martinez stage = Thanetian. Calcareous nannoplankton zone CP7-CP; Planktonic foraminifera zone P4-P5; Ynezian foram z | claystone | 59.2 - 56 Ma Paleocene |
F84 - Silverado Formation, Santa Ana Mountains | Schoellhamer J. E., Vedder J. G., et al (1981) | Silverado | The type section suggests a thickness of around 350 m for the Silverado Formation, which lies unconformably upon the Late Cretaceous Williams Formation and Ladd Formation, and is overlain unconformably by the Santiago Formaton. The Silverado Formation is given a Paleocene age on the basis of macrofauna (sparse index taxa), but more finely assigned by McCulloh et al. (2000) to the Martinez stage = Thanetian. Calcareous nannoplankton zone CP7-CP; Planktonic foraminifera zone P4-P5; Ynezian foram z | sandstone | 59.2 - 56 Ma Paleocene |
F85 - Silverado Formation, Santa Ana Mountains | Schoellhamer J. E., Vedder J. G., et al (1981) | Silverado | The type section suggests a thickness of around 350 m for the Silverado Formation, which lies unconformably upon the Late Cretaceous Williams Formation and Ladd Formation, and is overlain unconformably by the Santiago Formaton. The Silverado Formation is given a Paleocene age on the basis of macrofauna (sparse index taxa), but more finely assigned by McCulloh et al. (2000) to the Martinez stage = Thanetian. Calcareous nannoplankton zone CP7-CP; Planktonic foraminifera zone P4-P5; Ynezian foram z | sandstone | 59.2 - 56 Ma Paleocene |
Recorded Fossils
Accepted Name | Hierarchy | Age |
---|---|---|
Cucullaea sp. genus | Animalia : Mollusca : Bivalvia : Arcida : Cucullaeidae : Cucullaea | 59.2 - 56 Ma Paleocene |
Glycymeris sp. genus | Animalia : Mollusca : Bivalvia : Arcida : Glycymerididae : Glycymeris | 59.2 - 56 Ma Paleocene |
Crassatella sp. genus | Animalia : Mollusca : Bivalvia : Carditida : Crassatellidae : Crassatella | 59.2 - 56 Ma Paleocene |
Brachysphingus sp. genus | Animalia : Mollusca : Gastropoda : Neogastropoda : Buccinidae : Brachysphingus | 59.2 - 56 Ma Paleocene |
Turricula sp. genus | Animalia : Mollusca : Gastropoda : Neogastropoda : Clavatulidae : Turricula | 59.2 - 56 Ma Paleocene |
Ficopsis sp. genus | Animalia : Mollusca : Gastropoda : Littorinimorpha : Ficidae : Ficopsis | 59.2 - 56 Ma Paleocene |
Turritella pachecoensis species | Animalia : Mollusca : Gastropoda : Turritellidae : Turritella : Turritella pachecoensis | 59.2 - 56 Ma Paleocene |
References
Schoellhamer J. E., Vedder J. G., et al (1981) Geology of the Northern Santa Ana Mountains, California, United States Geological Survey Professional Paper 420 D, 1-109 |
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!