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Geophysical log collection from test holes and water wells in Mississippi. The collection spans from 1940-present and is an extensive representation of drilling and logging in Mississippi. This collection is for use in research and planning for communities, government, environmental professional, industry and academia.
Tags: Environmental Geology,
Geological Collection,
MDEQ,
MGS,
MOOG, All tags...
MS,
Mississippi,
Mississippi Geological Survey,
Mississippi Office of Geology,
Mississippi, Hinds, Jackson,
boreholes,
driller's logs,
e-logs,
electric logs,
elogs,
geology,
geophysical logs,
hydrogeology,
ndc_collection,
water wells, Fewer tags
The origin of the combustible gases in groundwater from glacial-outwash and fractured-bedrock aquifers was investigated in northern Tioga County, Pennsylvania. Thermogenic methane (CH4) and ethane (C2H6) and microbial CH4 were found. Microbial CH4 is from natural in situ processes in the shale bedrock and occurs chiefly in the bedrock aquifer. The δ13C values of CH4 and C2H6 for the majority of thermogenic gases from water wells either matched or were between values for the samples of non-native storage-field gas from injection wells and the samples of gas from storage-field observation wells. Traces of C2H6 with microbial CH4 and a range of C and H isotopic compositions of CH4 indicate gases of different origins...
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