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Nortonville Mine, Nortonville, Contra Costa Co., California, USA

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Latitude & Longitude (WGS84): 37° 57' 28'' North , 121° 52' 45'' West
Latitude & Longitude (decimal): 37.95778,-121.87944
Köppen climate type:Csb : Warm-summer Mediterranean climate


A former coal deposit/mine located at the old site of Nortonville near Clayton, on the Black Diamond Mines Regional Preserve.


Commodity List

This is a list of exploitable or exploited mineral commodities recorded at this locality.


Mineral List


1 valid mineral.

Regional 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

Oligocene - Paleocene
23.03 - 66 Ma



ID: 2911568
Eocene marine rocks

Age: Paleogene (23.03 - 66 Ma)

Stratigraphic Name: Anita Shale; Avenal Sandstone; Butano Sandstone; Canoas Siltstone; Capay Formation; Coldwater Sandstone; Cozy Dell Shale; Delmar Formation; Domengine Formation; Gredel Formation; Indart Sandstone; Jameson Shale Member of Markley Formation; Juncal Formation; Junipero Sandstone; Kreyenhagen Shale; Llajas Formation; Los Muertos Creek Formation; Lucia Shale; Mabury Formation; Maniobra Formation; Markley Formation; Matilija Sandstone; Meganos Formation; Nortonville Shale; Point of Rocks Sandstone; Rose Canyon Shale; Sacate Formation; Santa Susana Formation; Santiago Formation; Sierra Blanca Limestone; Tejon Formation; Tesla Formation; The Rocks Sandstone; Tolman Formation; Torrey Sandstone; Tres Pinos Sandstone; Welcome Formation; Yokut Sandstone; Reliz Canyon Formation; Mount Soledad Formation; Ardath Shale; Scripps Formation; Friars Formation; La Jolla Group; German Rancho Formation

Description: Shale, sandstone, conglomerate, and minor limestone; in part Oligocene and Paleocene.

Lithology: Major:{mudstone,sandstone}, Minor:{conglomerate}, Incidental:{limestone, siltstone, sedimentary breccia}

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]

Eocene
33.9 - 56 Ma



ID: 2541373
Markley Formation, Lower member

Age: Eocene (33.9 - 56 Ma)

Description: Thin-bedded to massive sandstone with minor siltstone and mudstone.

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]

Data and map coding provided by Macrostrat.org, used under Creative Commons Attribution 4.0 License



This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.

References

Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Palache, Charles, Harry Berman & Clifford Frondel (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana Yale University 1837-1892, Volume II: Halides, Nitrates, Borates, Carbonates, Sulfates, Phosphates, Arsenates, Tungstates, Molybdates, Etc. John Wiley and Sons, Inc., New York, 7th edition, revised and enlarged, 1124pp.: 473.
Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 82.

 
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