Preliminary analyses of matrix properties of Silurian and Devonian carbonate rocks in the Indiana and Ohio parts of the Midwestern Basins and Arches Region
Conference
·
· Geological Society of America, Abstracts with Programs; (United States)
OSTI ID:6859845
- Geological Survey, Columbus, OH (United States). Water Resources Div.
The US Geological Survey's Regional Aquifer-Systems Analysis (RASA) in the Midwestern Basins and Arches Region is investigating the Silurian and Devonian carbonate-rock aquifer in parts of Indiana, Ohio, Michigan, and Illinois. Core samples from the carbonate-rock aquifer in Indiana and Ohio were analyzed for horizontal permeability and porosity. These matrix properties were used to describe the hydrogeologic aspects of the carbonate-rock aquifer throughout the regional study area. Core descriptions by the Indiana and Ohio State Geological surveys, were used for sub-dividing the core into the various lithostratigraphic groups. The lithostratigraphic groups are: the Brassfield/Sexton Creek Limestone, the Sublockport (including the Dayton Limestone and the Rochester Shale Equivalent), the Lockport Dolomite or the Salamonie Dolomite, the Salina Group, the lower section of the Muscatatuck Group and the upper section of the Muscatatuck Group. The porosities and horizontal permeabilities determined from the 38 samples were analyzed by nonparametric statistical methods. The data were grouped by lithologic unit, well location, and position within a depositional basin (the Appalachian, Michigan and Illinois Basins). In each case, all groups of data had identical distributions. These results show that the horizontal permeability and porosity of the matrix in the Silurian and Devonian carbonate rocks that were sampled are statistically similar and that variation between the groups is not statistically important.
- OSTI ID:
- 6859845
- Report Number(s):
- CONF-9404217--
- Conference Information:
- Journal Name: Geological Society of America, Abstracts with Programs; (United States) Journal Volume: 26:5
- Country of Publication:
- United States
- Language:
- English
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