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This set includes 52 cores collected from the Mohawk River Valley, NY (Herkimer, Fulton, Montgomery, Schoharie, and Saratoga Counties). Each well was cored continuously from the top of bedrock to the total depth (TD), capturing a complete stratigraphic section of Late Ordovician to (in most cases) Precambrian basement. Core diameters are BX and NX, and lengths range from ~400 to ~1400 feet. The Mohawk Valley cores are of particular value because they were collected at the north end of the Appalachian Basin, in an area where there has been little other exploratory drilling. The results from previous analyses are available upon request.
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In order to determine the innate microbial community of shale gas reservoirs and how they are impacted by hydraulic fracturing, this study analyzed biomass collected from produced water and rock from hydraulically fractured wells in the Utica Shale. The samples include rock chips from a drill core from one Utica well, produced water from that same Utica well, and produced water from 12 different Utica wells that had been in production between 1-5 years, spanning the oil and gas windows of SE Ohio. The samples were filtered for biomass, extracted, amplified, and 16S rRNA gene sequencing was performed on the Illumina MiSeq platform.


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