Open-File Miscellaneous Investigation 15–24.0
	Geohydrologic and water-quality characterization of a fractured-bedrock test hole in an area of Marcellus shale gas development, Tioga County, Pennsylvania by Williams, J. H., Risser, D. W., and Dodge, C. H. 2015
Suggested Citation:	Williams, J. H., Risser, D. W., and Dodge, C. H., 2015, Geohydrologic and water-quality characterization of a fractured-bedrock test hole in an area of Marcellus shale gas development, Tioga County, Pennsylvania: Pennsylvania Geological Survey, 4th ser., Open-File Report OFMI 15–24.0, 44 p. plus supplemental information. [Available online.]
Description:	The Bureau of Topographic and Geologic Survey in cooperation with the U.S. Geological Survey analyzed the rock core, geophysical logs, water quality, and gas-isotope data from a 1,512.6-ft-deep test hole in the Cherry Flats 7.5-minute quadrangle in north-central Pennsylvania. The results of the study are published in OFMI 15–24.0 and characterize the lithologies, fractures, water-bearing zones, groundwater quality, and isotopic signatures of hydrocarbons at the drilling location. Furthermore, the work helps to quantify the depth and character of the fresh and saline groundwater in an area of shale-gas exploration. The Cherry Flats test hole penetrated rocks from the lower part of the Middle Pennsylvanian Allegheny Formation through the upper part of the Upper Devonian Catskill Formation. The report consists of a text file and supplemental files pertaining to a complete core description, geophysical logs, and video logs.
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