Marburg Schist (PAPZm;0)

State	Pennsylvania
Name	Marburg Schist
Geologic age	Probably lower Paleozoic
Original map label	Xm
Comments	Digital map differences from 1980 printed map: no longer included in Wissahickon Formation; map symbol changed from (Xwm).
Primary rock type	phyllite
Secondary rock type	mica schist
Other rock types	conglomerate
Lithologic constituents	Major Metamorphic > Schist > Mica-schistmica-chlorite schist Metamorphic > Metasedimentary > Metaclastic > Phyllite Minor Sedimentary > Clastic > Conglomerate
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	Adams - Lancaster - York