Digitized Historical Borehole Geophysical Logs in and near the Mississippi Alluvial Plain Aquifer System (ver. 2.0, January 2021)
Dates
Publication Date
2019-11-05
Start Date
1940-04-05
End Date
2020-09-30
Last Revision
2021-01-22
Citation
Payne, J.D., 2019, Digitized Historical Borehole Geophysical Logs in and near the Mississippi Alluvial Plain Aquifer System (ver. 2.0, January 2021): U.S. Geological Survey data release, https://doi.org/10.5066/P9L27417.
Summary
This data release consists of historical borehole geophysical data collected by various entities and digitized by the U.S. Geological Survey to characterize the physical properties of the subsurface in and near the Mississippi Alluvial Plain from Louisiana to Missouri. The geophysical log data were collected by different Federal, state, and local agencies throughout the area and were obtained from three sources: Hart and Clark (2008), the Mississippi Department of Environmental Quality (MDEQ) (Mississippi Department of Environmental Quality, 2019), and the Louisiana Department of Natural Resources (LADNR). The log data generally consisted of either scanned .jpg or .tif images of the original log. The data were digitized using Neurolog [...]
Summary
This data release consists of historical borehole geophysical data collected by various entities and digitized by the U.S. Geological Survey to characterize the physical properties of the subsurface in and near the Mississippi Alluvial Plain from Louisiana to Missouri. The geophysical log data were collected by different Federal, state, and local agencies throughout the area and were obtained from three sources: Hart and Clark (2008), the Mississippi Department of Environmental Quality (MDEQ) (Mississippi Department of Environmental Quality, 2019), and the Louisiana Department of Natural Resources (LADNR). The log data generally consisted of either scanned .jpg or .tif images of the original log. The data were digitized using Neurolog v.2015.12 (NeuraLog, 2018). The digitization process involves tracing each log over a user-defined grid area; the traces can be exported in various formats such as .las (log ascii standard) file that can be read into other software packages.
Click on title to download individual files attached to this item.
WellSet1_Metadata.xml Original FGDC Metadata
View
36.08 KB
application/fgdc+xml
MAPWellLogRevision History_jdg.txt “Version History Text File”
1.17 KB
text/plain
WELLSet1_Data.txt “Log Data”
188.39 MB
text/plain
WELLSet1_Collar.txt “Location Data”
190.02 KB
text/plain
Related External Resources
Type: Web Link
Hart, R.M., and Clark, B.R., 2008, Geophysical log database for the Mississippi Embayment Regional Aquifer Study (MERAS): U.S. Geological Survey Scientific Investigations Report 2008-5192, 8 p.
The borehole geophysical log data documented in this data release are intended to provide calibration points that will aid with airborne electromagnetic surveys of the Mississippi Embayment Regional Aquifer System (MERAS). The data can also be used to help define the framework of the Mississippi River Valley alluvial (MRVA) aquifer as well as local and regional scale geologic units.
