Geology of Lehigh and Northampton Counties, Pennsylvania: Historical Works
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Maps >> Geologic Map of Northampton County
This is a 1973 reprint of the 1966 redrafted and recolored edition of the original 1939 map.
Mr.SID map (9.5 MB)
Requires the free Mr.SID® plug-in.
Flash-based map (7.5 MB)
Includes zoom and click-and-drag features.
Requires latest version of the free Flash™ player.
SID Map at PSU (1939 version)
PSU SID Map (11.5 MB)
Mr.SID version of the original 1939 map available from Penn State University Maps Library.
Requires the free Mr.SID plugin.
DCNR Quadrangle Maps
Click on a portion of the map below for information from DCNR about corresponding geologic quadrangle maps, including digitized map coverage when provided.
Division of map based on Map 61 D from DCNR (Pennsylvania Department of Conservation and Natural Resources).