Hercules, Contra Costa Co., California, USA
| Latitude & Longitude (WGS84): | 38° 1' 1'' North , 122° 17' 15'' West |
|---|---|
| Latitude & Longitude (decimal): | 38.01722,-122.28750 |
| Köppen climate type: | Csb : Warm-summer Mediterranean climate |
A town located on San Pablo Bay.
Mineral List
Mineral list contains entries from the region specified including sub-localitiesRegional Geology
This geological map and associated information on rock units at or nearby to the coordinates given for this locality is based on relatively small scale geological maps provided by various national Geological Surveys. This does not necessarily represent the complete geology at this locality but it gives a background for the region in which it is found.
Click on geological units on the map for more information. Click here to view full-screen map on Macrostrat.org
| Holocene - Pleistocene 0 - 2.588 Ma ID: 2542245 | Surficial deposits, undivided Age: Pleistocene (0 - 2.588 Ma) Description: For more detailed reports of surficial deposits, see Helley and others (1979), Atwater (1982), Herd (1978 a, b), and Borchardt and Seelig (1991). Reference: Graymer, R.W., D.L. Jones, E.E. Brabb. Preliminary geologic map emphasizing bedrock formations in Contra Costa County, California. U.S. Geological Survey Open-File Report 94-622. [86] |
| Pliocene - Oligocene 2.588 - 33.9 Ma ID: 2938686 | Miocene marine rocks Age: Cenozoic (2.588 - 33.9 Ma) Stratigraphic Name: Agua Sandstone Member; Alferitz Formation; Altamira Shale Member; Antelope Shale Member; Big Blue Serpentinous Member; Branch Canyon Formation; Briones Formation; Button Bed Sandstone Member; Capistrano Formation; Carneros Sandstone Member; Castaic Formation; Cierbo Sandstone; Claremont Shale; Devilwater Silt-Gould Shale Member; Escudo Sandstone; Fish Creek Gypsum Member; Freeman Silt; Gallaway Beds; Hambre Sandstone; Hannah Formation; Hercules Shale Member; Jewett Sand; La Vida Member; Malaga Mudstone Member; McDonald Shale; McLure Shale Member; Media Shale Member; Modelo Formation; Monterey Formation; Neroly Formation; Olcese Sand; Oso Member; Oursan Sandstone; Painted Rock Sandstone Member; Pismo Formation; Pleito Formation; Point Arena Beds; Point Sal Formation; Puente Formation; Pullen Formation; Quail Lake Formation; Reef Ridge Shale; Rincon Shale; Rodeo Shale; Round Mountain Silt; Salinas Shale; Salt Creek Shale Member; Saltos Shale Member; Sandholdt Shale; San Onofre Breccia; San Pablo Group; Santa Margarita Formation; Santos Shale Member; Sisquoc Formation; Sobrante Sandstone; Soda Lake Sandstone Member; Soda Lake Shale Member; Soquel Member Split Mountain Formation; Sycamore Canyon Member; Temblor Formation; Tequepis Sandstone; Tice Shale; Topanga Formation; Twisselman Sandstone Member; Valmonte Diatomite Member; Vaqueros Formation; Vedder Sand; Whiterock Bluff Shale Member; Wimer Formation; Yorba Member Description: Sandstone, shale, siltstone, conglomerate and breccia; in part Pliocene and Oligocene. Lithology: Major:{sandstone,mudstone}, Minor:{siltstone,conglomerate}, Incidental:{gypsum} Reference: Horton, J.D., C.A. San Juan, and D.B. Stoeser. The State Geologic Map Compilation (SGMC) geodatabase of the conterminous United States. doi: 10.3133/ds1052. U.S. Geological Survey Data Series 1052. [133] |
| Middle Miocene 11.62 - 15.97 Ma ID: 2590736 | Hambre Sandstone Age: Miocene (11.62 - 15.97 Ma) Description: Light-brown to gray, massive, medium- to fine-grained sandstone and siltstone Comments: Rodeo Assemblage Reference: Graymer, R.W., D.L. Jones, E.E. Brabb. Geologic Map and Map Database of Northeastern San Francisco Bay Region, California. U.S. Geological Survey Miscellaneous Field Studies Map MF-2403. [92] |
| Middle Miocene 11.62 - 15.97 Ma ID: 3039757 | Hambre Sandstone |
Data and map coding provided by Macrostrat.org, used under Creative Commons Attribution 4.0 License
Localities in this Region
- California
- Contra Costa Co.
