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Hydrology of the Martinsburg Formation in Lehigh and Northampton Counties, Pennsylvania
Water Resource Report
30
Prepared by the United States Geological Survey, Water Resources Division, in cooperation with the Pennsylvania Geological Survey
The Martinsburg Formation underlies the northern half of Lehigh and Northampton Counties, and is of Middle and LateOrdovician age. It is bounded on the south by older Ordovician limestone formations and on the north by a ridge-forming conglomerate of Silurian age. Recent mapping has supported a three-part division of the Martinsburg into a lower thin-bedded slate {Bushkill Member), a middle graywacke-bearing unit (Ramseyburg Member), and an upper thick-bedded slate (Pen Argyl Member).
Suggested Citation
Poth, C.W., 1972, Hydrology of the Martinsburg Formation in Lehigh and Northampton Counties, Pennsylvania: Water Resource Report 30, iv, 52 p.; Map: 1 Sheet.
Study Area
Publication type
Report
Publication Subtype
State or Local Government Series
Title
Hydrology of the Martinsburg Formation in Lehigh and Northampton Counties, Pennsylvania