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Geology Publications
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OF-148 Geologic Map of the Madison Quadrangle Madison, Rankin, and Hinds Counties, Mississippi
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OF-285 Surface Geology of Jackson County, Mississippi
The purpose of this study and present report is to update the geologic map of Jackson County to reflect the earlier findings of Marble, et al and Stewart, et al and to provide a better understanding of the relationship between the surface geology and shallow sub-surface geology. This work aided the study of ground water resources in Jackson County, and a companion report has been published on this subject Ground Water Resources of Jackson County, Open File Report 286.
OF-286 Ground Water Resources of Jackson County, Mississippi
This report presents the current interpretation of the geology and ground water resources of Jackson county, and it provides detailed information, both recent and historic, on the water levels and water quality for the aquifers presently in use.
OF-294 Geologic Map of the Church Hill Quadrangle Jefferson and Adams Counties, Mississippi
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OF-296 Geologic Map of the Lorman Quadrangle Jefferson and Claiborne Counties, Mississippi
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OF-295 Geologic Map of the Rodney Quadrangle Jefferson and Claiborne Counties, Mississippi
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OF-305 Effects of Geologic Structure on Tertiary Formations of Northwestern Mississippi
The information presented in this report is part of a study of subsurface geology that encompassed all or portions of nineteen counties in northwestern Mississippi. In this study, more than 800 borehole geophysical logs were analyzed for the purposes of subsurface correlation and mapping within the Claiborne, Jackson, and Vicksburg Groups.
Recharge Zones in the Mississippi – Yazoo Alluvial Plain
Alluvial Fans are the primary source of recharge to the aquifer underlying the Mississippi-Yazoo Alluvial Plain ("Mississippi Delta"). The fans, which form a discontinuous chain at the foot of a low bluffline, from DeSoto County near Memphis to Wilkinson County near the Louisiana state line, are of great significance in allowing recharge into the Mississippi River Valley alluvial aquifer (MRVA) in Mississippi's "Delta" region. While some fans are fairly recent surficial features, drilling has revealed others have deep roots in the floodplain alluvial sequence and reflect multiple episodes of deposition and burial. While archaeologic data indicates that some have seen virtually no deposition for thousands of years, others have significant deposits which have accumulated since European settlement. There should be awareness of the fans as recharge source areas which may need protection from pollution. The 2 sheets in this report show these fans and also differentiate between the impermeable, hydric clays of the delta and the non-hydric alluvial soils which allow recharge to the MRVA. The Shapefile of the alluvial fans mapped in this report are also available for download.
