|Sediment Maps Introduction|
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Data Sources and Methodology
The maps produced for this project were built from information found in data sources describing both surface and subsurface geologic conditions. Data sources used for the study include driller’s logs, field notes and borehole geologic logs compiled by geologists, borehole geophysical logs that have been collected for a number of municipal water supply wells and large private irrigation wells, and geologic maps compiled for the region and for specific areas. Specific entities and agencies from which these materials were collected include the following:
Washington Department of Ecology (WADOE): The WADOE Eastern Region office in Spokane, Washington, is the primary source for drillers’ logs for the GWMA area. Electronic copies of the drillers’ logs were provided by WADOE as .jpg files on CD’s and compiled from Ecology’s online well log files. Franklin Conservation District (FCD) staff also provided paper copies for most drillers’ logs for wells in Franklin County and for all wells used as GWMA water quality sampling locations.
U.S. Bureau of Reclamation (USBR): USBR records provided geologists’ logs for several hundred geotechnical borings and water wells drilled in the region. These records include copies of original interpreted logs maintained in USBR archives and records.
Hanford project files: Kennedy/Jenks Consultants staff has access to personal files and records kept during previous work at the Hanford Site. These files and records include geologists’ well logs and outcrop logs for a number of locations in and near the GWMA.
Published geologic maps and cross sections: Available geologic maps of the GWMA provided constraints on identification of geologic units, interpretation of geologic unit thicknesses and pinchouts, and determination of the presence and magnitude of faults and folds. The majority of the geologic maps used in this study are published by the U.S. Geological Survey or the Washington Department of Natural Resources, Division of Geology and Earth Resources.Dr. Lindsey’s post-doctoral research files: In addition to the data sources listed above, personal files, field notes, and knowledge were additional important sources of information. Dr. Lindsey, the project manager and technical lead for this project, compiled data on the Ringold Formation and equivalent units during post-doctoral research and provided this information.
|Last Updated ( Thursday, 19 March 2009 )|