Stratigraphy of the unsaturated zone and the Snake River Plain aquifer at and near the Idaho National Engineering Laboratory, Idaho

The unsaturated zone and the Snake River Plain aquifer at and near the Idaho National Engineering Laboratory (INEL) are made up of at least 178 basalt-flow groups, 103 sedimentary interbeds, 6 andesite-flow groups, and 4 rhyolite domes. Stratigraphic units identified in 333 wells in this 890-mile{sup 2} area include 121 basalt-flow groups, 102 sedimentary interbeds, 6 andesite-flow groups, and 1 rhyolite dome. Stratigraphic units were identified and correlated using the data from numerous outcrops and 26 continuous cores and 328 natural-gamma logs available in December 1993. Basalt flows make up about 85% of the volume of deposits underlying the area.

[1]  S. R. Anderson,et al.  Thickness of surficial sediment at and near the Idaho National Engineering Laboratory, Idaho , 1996 .

[2]  W. Berggren,et al.  Late Neogene chronology: New perspectives in high-resolution stratigraphy , 1995 .

[3]  W. Hackett,et al.  Assessing the accuracy of thermoluminescence for dating baked sediments beneath late Quaternary lava flows, Snake River Plain, Idaho , 1994 .

[4]  W. Hackett,et al.  Timing of Late Quaternary Glaciations in the Western United States Based on the Age of Loess on the Eastern Snake River Plain, Idaho , 1993, Quaternary Research.

[5]  M. Lanphere,et al.  Evidence for a new geomagnetic reversal from Lava flows in Idaho: Discussion of short polarity reversals in the Brunhes and late Matuyama polarity chrons , 1988 .

[6]  R. W. Le Maitre,et al.  A Chemical Classification of Volcanic Rocks Based on the Total Alkali-Silica Diagram , 1986 .

[7]  B. D. Lewis,et al.  Evaluation of a predictive ground-water solute-transport model at the Idaho National Engineering Laboratory, Idaho. Water-resources investigations (final). [Aqueous chemical and radioactive wastes] , 1982 .

[8]  William P. Leeman,et al.  K-Ar dating, Quaternary and Neogene volcanic rocks of the Snake River Plain, Idaho , 1975 .

[9]  D. J. Ackerman.  Transmissivity of the Snake River Plain Aquifer at the Idaho National Engineering Laboratory, Idaho , 1991 .

[10]  R. C. Bartholomay.  Digitized geophysical logs for selected wells on or near the Idaho National Engineering Laboratory, Idaho , 1990 .

[11]  Larry J. Mann,et al.  HYDRAULIC PROPERTIES OF ROCK UNITS AND CHEMICAL QUALITY OF WATER FOR INEL-1 A 10,365-FOOT DEEP TEST HOLE DRILLED AT THE IDAHO NATIONAL ENGINEERING LABORATORY, IDAHO , 1986 .