T. 6 S. 2019 Ket Ket Qal Km Ket Km Qt1 e Qal Km Qal Qt1 Km Km Km Qt1 Qt2 Ket Qt2 Qal Qt3 Qt1 Qt1 Qt2

T. 6 S. 2019 Ket Ket Qal Km Ket Km Qt1 e Qal Km Qal Qt1 Km Km Km Qt1 Qt2 Ket Qt2 Qal Qt3 Qt1 Qt1 Qt2
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Transcript of T. 6 S. 2019 Ket Ket Qal Km Ket Km Qt1 e Qal Km Qal Qt1 Km Km Km Qt1 Qt2 Ket Qt2 Qal Qt3 Qt1 Qt1 Qt2

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    Structural Cross-Section of the Marietta 7.5-Minute Geologic Quadrangle

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    ¶GEOLOGIC MAPMARIETTA QUADRANGLEPrentiss County, Mississippi

    T. 5 S. T. 6 S.

    T. 5 S. T. 6 S.

    2009-2018 Mississippi Statewide LIDAR-Generated DEM and Hill Shade

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    Geology field checked in 1992, 2014, 2015, and 2017 using the 1971, U.S. Geological Survey 7.5-minute topographic quadrangle, Universal Transverse Mercatorprojection, 1927 North American datum, contour interval 20 feet. Universal Transverse Mercator projection, 1983 North American datum. GRS80 spheroid. 1000-meterUniversal Transverse Mercator 1983 datum grid ticks, zone 16, shown in red. September 2019 magnetic declination 2.48° W ± 0.34° changing by 0.07° W per year. Sources: Contours obtained from Mississippi Automated Resource Information System (MARIS). Public Land Survey System, 1:24,000 scale, railroad features,highway features, and hydrologic information from MARIS. We thank the National Park Service and Mississippi State University for their cooperation and for facilitatingthe data collection and fieldwork necessary for this mapping project. Public Land Survey System from MARIS, 1:24,000 scale. Lidar from Brad Segrest & BarbaraYassin of The Mississippi Department of Environmental Quality (MDEQ), Natural Resources Conservation Service, National Oceanic and Atmospheric Administration,United States Army Corps of Engineers, and MARIS. Building Footprint data is licensed by Microsoft under the Open Data Commons Open Database License (ODbL). Geographic Information System by Kate Grala, and Darrel W. Schmitz, Mississippi State University, and Jonathan R. Leard, GIT, MDEQ Office of Geology-SurfaceMapping Division. MDEQ does not warrant the accuracy or completeness of the source data. Geologic maps are only a guide to current understanding and do noteliminate the need for detailed investigations of specific sites for specific purposes. Publishing Organization: This map was produced by the Mississippi Office of Geology in cooperation with Mississippi State University. This map was funded through agrant from the National Park Service.

    1 0 10.5 Miles

    1 0 10.5 Miles

    L-0001Mississippi Geological SurveyA.J. SampleSec.30 - T.6S - R.8EElev.460ft. T.D.451Ft.

    L-0003Mississippi Bureau of GeologyNew Site Water AssociationSec.13 - T.6S R- 8E.Elev.370ft. T.D. 272ft.

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    TombigbeeSand Qt2Qt4

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    ¬«371 LittleCreek

    Alluvium Alluvium

    Alluvium Alluvium

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    HurricaneCreek Big BrownCreek SaplingCreek Alluvium

    COFFEE SAND

    MCSHAN FORMATION

    EUTAW FORMATION

    TUSCALOOSA FORMATION

    Alluvium

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    DESCRIPTION OF MAP UNITS

    M I S S I S S I P P I D E P A R T M E N T O FE N V I R O N M E N T A L Q U A L I T Y O F F I C E O F G E O L O G Y

    O P E N - F I L E R E P O R T 3 0 8

    G E O L O G I C M A P of the

    MARIETTA QUADRANGLE P r e n t i s s C o u n t y, M i s s i s s i p p i

    2019

    Geology by Ernest E. Russell, PhD and Darrel Schmitz, RPG Cross-Section by Darrel Schmitz, RPGand Jonathan R. Leard, GIT

    20x Vertical Exaggeration

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    Sand, buff, yellow, red-brown, light to dark gray, fine to meduim-grained, glauconitic, with zones of silty sandand clay and occasional thin beds of concretionary sandtone layers. Fossiliferous in certain parts. The base of the Coffee Formationis questionably disconformable, almost impossible to differenitiateon the basis of lithology from the underlying Tombigbee Member sands. The only evidence are phosphatic molds and general fossilsin the basal Coffee not common to the Tombigbee. Thicknessranges up to about 140 feet.

    EUTAW FORMATION Ket Tombigbee Member, Sand, Olive drab to light- to reddish-brown,light to dark gray, greenish-gray, fine-grained, massive, glauconitic, in part argillaceous, micaceous, somewhat calcareous, and fossiliferous.The base is conformable with the underlying portion of the EutawFormation. Thickness ranges up to 55 feet. Sand, tan, yellow, brown, reddish-brown light to dark gray, greenish gray, glauconitic, fine to course grained, cross-bedded, with laminae of dark gray flaky clay, and stringers of small chert gravel, locallycarbonaceous and locally fossiliferous. The Eutaw Formationdisconformably ovelays the McShan Formation. Thickness ranges up toabout 200 feet.

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    TERRACE ALLUVIUM Abandoned floodplain deposits of clay, silt, and sand generallyyellowsih-orange, orange, and tan. Approximately 25 feet thick adjacent to larger stream Alluvium or younger terrace deposits, thinning or non-existent up tributiaries. Qt1 - youngest and lowestin elevation of Terrace alluvium deposits. Qt2 - second youngest in age and elevation of Terrace alluvium deposits. Qt3 - third youngestin age and elevation of Terrace alluvium deposits. Qt4 -fourthyoungest in age and elevation of Terrace alluvium deposits that is more eroded and discontinuous. PLE

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    ALLUVIUM Floodplain deposits of clay, silt, a