Unnamed Clay occurrence , Union City, Alameda Co., California, USA
|Latitude & Longitude (WGS84):||37° 36' 33'' North , 122° 1' 35'' West|
|Latitude & Longitude (decimal):||37.60917,-122.02639|
|Köppen climate type:||Csb : Warm-summer Mediterranean climate|
A clay occurrence located in the SE¼ sec. 1, T4S, R2W, MDM, 5.0 km (3.1 miles) ENE of Union City center. MRDS database stated accuracy for this location is 1,000 meters. This locality may be located in the city of Hayward. The coordinates presented place it on the mutual boundary line of both cities.
Local rocks include Quaternary alluvium and marine deposits.
Commodity ListThis is a list of exploitable or exploited mineral commodities recorded at this locality.
Rock Types Recorded
Select Rock List TypeAlphabetical List Tree Diagram
Entries shown in red are rocks recorded for this region.
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
Age: Pleistocene (0 - 2.588 Ma)
Description: Surficial deposits, undivided
Reference: Graymer, R.W., D.L. Jones, E.E. Brabb. Preliminary Geologic Map Emphasizing Bedrock Formations in Alameda County, California. U.S. Geological Survey Open-File Report 96–252. 
|Holocene - Pliocene|
0 - 5.333 Ma
|Quaternary alluvium and marine deposits|
Age: Cenozoic (0 - 5.333 Ma)
Stratigraphic Name: Temescal Formation; Modesto Formation; Victor Formation; Alameda Formation; Aromas Red Sands; Bautista Beds; Brawley Formation; Borrego Formation; Burnt Canyon Breccia; Cabezon Fanglomerate; Campus Formation; Casitas Formation; Chemehuevi Formation; Corcoran Clay; Cushenbury Springs Formation; Dos Picachos Gravels; Dripping Springs Formation; Frazier Mountain Formation; Friant Formation; Harold Formation; Heights Fanglomerate; Hookton Formation (part); Huichica Formation; La Habra Formation; Manix Lake Beds; Mohawk Lake Beds; Montezuma Formation; Nadeau Gravel; Ocotillo Conglomerate; Orcutt Formation; Pacoima Formation; Pauba Formation; Peckham Formation; Pinto Formation; Resting Springs Formation; Riverbank Formation; Rohnerville Formation; San Dimas Formation; Shoemaker Gravel; Temecula Arkose; Battery Formation; Bay Point Formation; Colma Formation; Lindavista Formation; Lomita Marl; Merritt Sand; Millerton Formation; Palos Verdes Sand; San Pedro Formation; Sweitzer Formation; Timms Point Silt
Description: Alluvium, lake, playa, and terrace deposits; unconsolidated and semi-consolidated. Mostly nonmarine, but includes marine deposits near the coast.
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.