Mississippi has a variety of different soils .The three general soils are 1) the river flood plain, known as the Delta, 2) a loess region, or bands of soils formed in windblown material that adjoins the Delta, and 3) Coastal Plain. The Mississippi Delta is better for growing row crop, while the loess and Coastal Plain region are better for animal production and forestry. The loess and Coastal Plain regions are divided based on similar soils, geology, climate, water resources, and land use called Major Land Resource Areas. The Mississippi Delta’s soil comes from sediments left by flooding various rivers in the region, rather than being a typical Delta formed by the mouth of a river. In the Delta most of the land is farmed, with three-fourths of the cropland to the north. Controlling surface water and drainage are major soil management issues. In the Delta soils are naturally diverse because of their alluvial origin. Particle sizes within the sediment decrease as distance from the originating stream increase. Another factor in Delta soil formation us surface water movement over time, because soils that formed under standing water have different properties than soils formed under moving water. Soils with large amounts of clay particles have unique features. When the soil is dry, small round aggregates form at the surface that look like shotgun buckshot, which is where the popular name for Delta clay soils “buckshot” came from. Soils with large clay content have very slow water filtration rates; this has led to significant aquaculture and rice production in the region. When floodwaters receded in the Delta, strong winds blew some of the dry sediment left by flooded river to the adjacent uplands to form the loess areas. Because of east and west winds the depth of loess decreases from west to east across the state. Coastal plain soils in Mississippi are part of an acr along the US coast from New Jersey to Texas. They are based on unconsolidated fluvial or marine sediments that where deposited on the edges of ancient seas. These soils are best suited for pastures and forests.
1. "Soils in Mississippi." Soils in Mississippi. N.p., n.d. Web. 30 Mar. 2014.
In 1915 Yazoo clay was discovered in the Yazoo River at Yazoo City. A suitable drilling location was selected near the discovery to give a complete section of the Yazoo clay that could be found along the Yazoo River bluffs. Continuous cores were taken form depths of up to 46 feet. The coring was done with a device called the, Shelby tube, but it was difficult to extract continuous cores without ruining it, causing continuous coring to stop. Although a 46 foot hole was drilled, the spot cores were taken from different intervals.
2. Bicker, Alvin R. "YAZOO CLAY AT YAZOO CITY, YAZOO COUNTY." Mississippi Geologic Research Papers, 1964. Jackson, MS: Mississippi Geological, Economic and Topographical Survey, 1964. 13. Print.
Byram Marl was discovered in 1918. The term “Byram” originally applied to the...