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Legend (Geology/DGS_Geology)

Surficial (0)
fill fill
modified land modified land
dredge disposal deposits dredge disposal deposits
shoreline deposits shoreline deposits
barrier washover barrier washover
flood tidal delta deposits flood tidal delta deposits
swamp deposits swamp deposits
marsh deposits marsh deposits
spit deposits spit deposits
lagoon deposits lagoon deposits
upland deposits upland deposits
dune deposits dune deposits
Carolina Bay deposits Carolina Bay deposits
Cypress Swamp Formation Cypress Swamp Formation
Kent Island Formation Kent Island Formation
stream terrace deposits stream terrace deposits
Scotts Corners Formation (undifferentiated) Scotts Corners Formation (undifferentiated)
Scotts Corners Formation (younger) Scotts Corners Formation (younger)
Scotts Corners Formation (older) Scotts Corners Formation (older)
Sinepuxent Formation Sinepuxent Formation
Ironshire Formation Ironshire Formation
Lynch Heights Formation Lynch Heights Formation
Lynch Heights Formation (thin) Lynch Heights Formation (thin)
Lynch Heights Formation (younger) Lynch Heights Formation (younger)
Lynch Heights Formation (older) Lynch Heights Formation (older)
Turtle Branch Formation Turtle Branch Formation
Omar Formation Omar Formation
Columbia Formation Columbia Formation
Walston Formation Walston Formation
Beaverdam Formation Beaverdam Formation
Beaverdam Formation (?) Beaverdam Formation (?)
Calvert Formation Calvert Formation
Vincentown Formation Vincentown Formation
Hornerstown and Navesink Formations (undiff) Hornerstown and Navesink Formations (undiff)
Mount Laurel Formation Mount Laurel Formation
Merchantville Formation Merchantville Formation
Matawan Group (undifferentiated) Matawan Group (undifferentiated)
Potomac Formation Potomac Formation
Offshore (1)
nearshore deposits nearshore deposits
finger shoal deposits finger shoal deposits
shoal deposits shoal deposits
sheet sand deposits sheet sand deposits
inter-shoal deposits inter-shoal deposits
ebb-tidal delta sand deposits ebb-tidal delta sand deposits
lagoonal deposits lagoonal deposits
ravinement lag deposits ravinement lag deposits
Sinepuxent Formation Sinepuxent Formation
marine shelf deposits marine shelf deposits
Lynch Heights Formation Lynch Heights Formation
Omar Formation Omar Formation
Beaverdam Formation Beaverdam Formation
Piedmont (2)
diabase dike diabase dike
pegmatite pegmatite
Iron Hill Gabbro Iron Hill Gabbro
Bringhurst Gabbro Bringhurst Gabbro
Greenville Gabbro Greenville Gabbro
Ardentown Granitic Suite Ardentown Granitic Suite
Perkins Run Gabbronorite Suite Perkins Run Gabbronorite Suite
Mill Creek Metagabbro Mill Creek Metagabbro
Montchanin Metagabbro Montchanin Metagabbro
Barley Mill Gneiss Barley Mill Gneiss
Christianstead Gneiss Christianstead Gneiss
Faulkland Gneiss Faulkland Gneiss
Windy Hills Gneiss Windy Hills Gneiss
Thompsons Bridge Gneiss Thompsons Bridge Gneiss
metapyroxenite and metagabbro metapyroxenite and metagabbro
serpentinite serpentinite
Brandywine Blue Gneiss Brandywine Blue Gneiss
Rockford Park Gneiss Rockford Park Gneiss
Mt. Cuba Gneiss Mt. Cuba Gneiss
White Clay Creek Amphibolite White Clay Creek Amphibolite
Cockeysville Marble Cockeysville Marble
Setters Formation Setters Formation
Baltimore Gneiss Baltimore Gneiss