Wheeler Road, Oxon Hill, Prince Georges Co., Maryland, USA
|Latitude & Longitude (WGS84):||38° 49' 49'' North , 76° 58' 55'' West|
|Latitude & Longitude (decimal):||38.8302777778, -76.9819444444|
Road cut along Wheeler Road, near the District of Columbia line. The locality is well known by local mineral and fossil collectors, for vivianite nodules and shark teeth.
3 valid minerals.
This 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 data will improve over time as more accurate maps and data sets are added.
|Miocene5.333 - 23.03 Ma||Miocene sedimentary|
|Paleogene23.03 - 66 Ma||Paleogene sedimentary rocks|
|Eocene33.9 - 56 Ma||Pamunkey Group; Nanjemoy Formation|
Pamunkey Group; Nanjemoy Formation - Dark green to gray, argillaceous, glauconitic, fine- to medium-grained sand; minor gray to pale brown clay; total thickness 0 to 125 feet; Marlboro Clay member at base: Pink to gray, homogeneous plastic clay with local lenses of very fine-grained white sand; thickness 0 to 30 feet; present west of Chesapeake Bay only; total thickness 0 to 125 feet.
References for regional geology:
Data provided by Macrostrat.org
Garrity, C.P., and Soller, D.R.,. Database of the Geologic Map of North America: adapted from the map by J.C. Reed, Jr. and others (2005). U.S. Geological Survey Data Series 424 .
USGS compilers. State geologic map data. State Maps.
Geological Survey of Canada. Generalized geological map of the world and linked databases. doi:10.4095/195142. Open File 2915d.
Beard, Robert (2004) A capitol collecting opportunity: blue vivianite graces this urban locality: Rock and Gem: 34(6): 28-33.