College Station, Brazos Co., Texas, USA
|Latitude & Longitude (WGS84):||30° 37' 40'' North , 96° 20' 3'' West|
|Latitude & Longitude (decimal):||30.62798,-96.33441|
|Köppen climate type:||Cfa : Humid subtropical climate|
2 miles W on an unnamed creek.
1 valid mineral.
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
0 - 66 Ma
|Cenozoic sedimentary rocks|
Age: Cenozoic (0 - 66 Ma)
Lithology: Sedimentary rocks
Reference: Chorlton, L.B. Generalized geology of the world: bedrock domains and major faults in GIS format: a small-scale world geology map with an extended geological attribute database. doi: 10.4095/223767. Geological Survey of Canada, Open File 5529. 
33.9 - 56 Ma
Age: Eocene (33.9 - 56 Ma)
Stratigraphic Name: Yegua Formation
Comments: clay with minor beds of sandstone, some concretionary limestone beds and lenses of oyster shells. sandst fine grained, calcar., glauconitic, massive, laminated, crossbedded; fossil wood; Volcanic ash included. silicified tuff containing an oyster and gastropod fauna (Eargle, 1968); 1,000 ft thick in San Antonio Sheet (1974). In East Texas and Gulf Coast to Rio Grande: Overlies Cook Mt. Formation; overlain by Caddell Fm. Unit is sandstone, clay, and lignite. Sandst. is mostly quartz and some chert, fine-grained, laminated, corssbedded; clay, lignitic, sandy, bentonitic, well laminated, lentils of lignite. In Seguin Sheet unit is about 1000 ft thick.
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.