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dc.contributor.authorVanags, Christopher Paul
dc.description.abstractSkidaway, a Pleistocene-aged barrier island, was chosen to study the transition between a Talquin fine sand (Arenic Alaquod) and an Ocilla loamy sand (Umbric Paleaquult) in a 15- by 40-m area. The objective was to characterize a young, heterogeneous landscape, which contained a soil association commonly found in older deposits inland. A detailed topographic map was generated, and the subsurface mapped with ground penetrating radar (GPR). GPR profiles were compiled to produce vertical slices, which were used to map the soil boundary. Exchangeable and soluble cations were measured for six profiles. Electrical conductivity, pH, gravimetric moisture, and particle size distribution were determined at 5 m increments over the grid. A 10% clay increase dramatically attenuated the GPR signal, producing slice images that resolve the boundary within 20 cm. An extensive microdepression corresponded with a change in parent material across the grid and at depth. Geochemical analysis showed order-or-magnitude shifts in pH and cation exchange capacity reflected by changes in vegetation at the boundary.
dc.subjectBarrier island
dc.subjectground-penetrating radar
dc.subjectlateral discontinuity
dc.titleA pedological study of soil genesis on Skidaway Island
dc.description.departmentCrop and Soil Sciences
dc.description.advisorWilliam Miller
dc.description.advisorDavid Wenner
dc.description.committeeWilliam Miller
dc.description.committeeDavid Wenner
dc.description.committeeLarry West
dc.description.committeeErvan Garrison

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