|Latitude & Longitude (WGS84):||39° 10' 52'' North , 76° 52' 38'' West|
|Latitude & Longitude (decimal):||39.18111,-76.87722|
|USGS MRDS Record:||10266788|
|Köppen climate type:||Cfa : Humid subtropical climate|
Commodities (Major) - Mica
Development Status: Prospect
Regions containing this locality
|North America Plate||Tectonic Plate|
Commodity ListThis is a list of exploitable or exploited mineral commodities recorded at this locality.
No minerals currently recorded for this locality.
List of minerals for each chemical element
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
|Famennian - Dapingian|
358.9 - 470 Ma
|Guilford Quartz Monznoite|
Age: Paleozoic (358.9 - 470 Ma)
Stratigraphic Name: Guilford Quartz Monznoite
Comments: Radiogenic date from Wetherill et al., 1966. (ref. MD003). Also second age date reference from USGS Geologic Names lexicon (ref. MD004): Isotopic dating (Rb-Sr) of the Guilford Quartz Monzonite indicates the unit is of Silurian age (425 Ma). Original map source: In 1995 the Water Resources Division of the U.S. Geological Survey digitized the geologic map of Maryland from the 1968 paper map (Reference MD001). Information about products from the Maryland Geological Survey can be found at http://www.mgs.md.gov/.
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. 
|Cambrian - Neoproterozoic|
485.4 - 1000 Ma
|Precambrian-Phanerozoic sedimentary and volcanic 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.