Hydraulic conductivity measurements were made of 49 sandstone core plugs using a flow pump and a conventional triaxial confining apparatus. The sandstones tested are samples from the Marshall Sandstone and Grand River and Saginaw Formations, which are the principal bedrock aquifers in the Michigan basin. Sandstones ranging from poorly cemented to well cemented were selected to investigate matrix-controlled hydraulic properties as a function of degrees of cementation. Hydraulic conductivities were measured for each sample over a range of effective stress (69 to 827 kp); hydraulic conductivities for the sample suite ranged from 0.019 to 0.0000000027 cm/sec. This range of approximately seven orders in magnitude is indicative of local and regional differences in matrix-controlled hydraulic conductivities for Mississippian and Pennsylvanian bedrock aquifers in the Michigan basin.(Author's abstract)
RECORD ID: 9104639
F&G CODE: 02f
Publication
Westjohn, D.B., Olsen, H.W. and Willden, A.T., Matrix-Controlled Hydraulic
Properties of Mississippian and Pennsylvanian Sandstones from the Michigan
Basin: Available from the US Geological Survey, Books and Open-File Reports
Section; Box 25425, Federal Center, Denver, CO 80225-0425. USGS Open-File Report
90-104, 1990. 18p, 2 fig, 3 tab, 6 ref, append.
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