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Magothy Formation

Magothy Formation - Loose, white, cross-bedded, "sugary", lignitic sands and dark gray, laminated silty clays; white to orange-brown, iron-stained, subrounded quartzose gravels in western Anne Arundel County; absent in outcrop southwest of Patuxent River; thickness 0 to 60 feet.
StateMaryland
NameMagothy Formation
Geologic ageCretaceous
Original map labelKm
Primary rock typesand
Secondary rock typeclay or mud
Other rock typesgravel
Lithologic constituents
Major
Unconsolidated > Coarse-detrital > SandLoose, white, cross-bedded, "sugary", lignitic sands
Minor
Unconsolidated > Fine-detrital > Claydark gray, laminated silty clays
Incidental
Unconsolidated > Coarse-detrital > Gravelwhite to orange-brown, iron-stained, subrounded quartzose gravels in western Anne Arundel County
Map references
Cleaves, E.T., Edwards, J., Jr., Glaser, J.D., 1968, Geologic Map of Maryland: Maryland Geological Survey, Baltimore, Maryland, scale 1:250,000.
Unit references
Cleaves, E.T., Edwards, J., Jr., Glaser, J.D., 1968, Geologic Map of Maryland: Maryland Geological Survey, Baltimore, Maryland, scale 1:250,000.
Unpublished digital version of the Maryland state geologic map that was digitized by the USGS Water Resources Office in Towson, MD
Geographic coverageAnne Arundel - Cecil - Kent

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