Trenton Gravel (PAQt;0)

State	Pennsylvania
Name	Trenton Gravel
Geologic age	Quaternary
Original map label	Qt
Primary rock type	sand
Secondary rock type	clay or mud
Other rock types	silt; gravel; alluvium
Lithologic constituents	Major Unconsolidated > Fine-detrital > Clay (Alluvial)clay-silt beds Unconsolidated > Coarse-detrital > Sand (Alluvial)Gray or pale-reddish-brown, very gravelly sand interstratified with crossbedded sand Minor Unconsolidated > Fine-detrital > Silt (Alluvial)clay-silt beds Unconsolidated > Coarse-detrital > Gravel (Alluvial)Gray or pale-reddish-brown, very gravelly sand interstratified with crossbedded sand
Map references	Pennsylvania Bureau of Topographic and Geologic Survey, Department of Conservation and Natural Resources, 2001, Bedrock Geology of Pennsylvania, edition: 1.0, digital map. Retrieved from internet 9-30-2004; <http://www.dcnr.state.pa.us/topogeo/map1/bedmap.aspx> DL Data: pageoexp.zip [http://www.dcnr.state.pa.us/topogeo/map1/bedmap.aspx]
Unit references	Berg, T. M., Edmunds, W. E., Geyer, A. R., and others, compilers, 1980, Geologic map of Pennsylvania: Pennsylvania Geological Survey, 4th ser., Map 1, 2nd ed., 3 sheets, scale 1:250,000. Pennsylvania Bureau of Topographic and Geologic Survey, Department of Conservation and Natural Resources, 2001, Bedrock Geology of Pennsylvania, edition: 1.0, digital map. Retrieved from internet 9-30-2004; <http://www.dcnr.state.pa.us/topogeo/map1/bedmap.aspx> DL Data: pageoexp.zip [http://www.dcnr.state.pa.us/topogeo/map1/bedmap.aspx]
Geographic coverage	Bucks - Delaware - Philadelphia