Elbrook Limestone

Light blue, laminated, argillaceous limestone and calcareous shale; some dolomite; thickness 1,400 to possibly 3,000 feet.
State Maryland
Name Elbrook Limestone
Geologic age Cambrian
Lithologic constituents
Major
Sedimentary > Clastic > Mudstone > Shale
Sedimentary > Carbonate > Limestone
Minor
Sedimentary > Carbonate > Dolostone
References

Cleaves, E.T., Edwards, J., Jr., and Glaser, J.D., 1968, Geologic Map of Maryland: Maryland Geological Survey, Baltimore, Maryland, scale 1:250,000.

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/.

NGMDB product
Counties Washington