|Latitude & Longitude (WGS84):||39° 24' 52'' North , 77° 14' 32'' West|
|Latitude & Longitude (decimal):||39.41444,-77.24222|
|Köppen climate type:||Cfa : Humid subtropical climate|
2 pits in the Wakefield Marble, producing crushed stone and agricultural lime. The pits operated until 1973.
Commodity ListThis is a list of exploitable or exploited mineral commodities recorded at this locality.
14 valid minerals.
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
485.4 - 541 Ma
|Paleozoic sedimentary rocks|
Age: Cambrian (485.4 - 541 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. 
|Early Cambrian - Neoproterozoic|
511 - 1000 Ma
Reference: Davis, A.M., C.S. Southworth, J.E. Reddy, J.S. Schindler. Geologic Map Database of the Washington DC Area Featuring Data from Three 30 x 60 Minute Quadrangles: Frederick, Washington West, and Fredericksburg. U.S. Geological Survey Open-File Report 01-227. 
541 - 2500 Ma
|Sams Creek Metabasalt|
Age: Proterozoic (541 - 2500 Ma)
Stratigraphic Name: Sams Creek Metabasalt
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.