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Data for four geologic test holes in the Sacramento Valley, California

January 1, 1994

The report provides geological and geophysical data for four of seven test holes drilled as a part of the Central Valley Aquifer Project, which is part of the Regional Aquifer Systems Analysis. The holes were drilled with a rotary well drilling machine to depths of 900 feet in the southwestern part of the Sacramento Valley in Solano and Yolo Counties. Geologic data for each well include lithology, texture, color, character of the contact, sorting, rounding, and cementation, determined from cuttings, cores, and sidewall covers. Fifty cores, 3 feet long, were obtained from each hole, and from eight to fourteen sidewall cores were collected. Geophysical data include a dual-induction log, spherically focused log (SFL), compensated neutron-formation density log, gamma-ray log, and a caliper log. These data are presented in four tables and on four plates. (USGS)

Citation Information

Publication Year 1985
Title Data for four geologic test holes in the Sacramento Valley, California
DOI 10.3133/ofr85488
Authors C.F. Berkstresser, J.J. French, M.E. Schaal
Publication Type Report
Publication Subtype USGS Numbered Series
Series Title Open-File Report
Series Number 85-488
Index ID ofr85488
Record Source USGS Publications Warehouse
USGS Organization