A microsedimentological analysis of Holocene changes in the Clinch River, Tennessee
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Keywords: fluvial geomorphology, sediment
Abstract Type: Poster Abstract
Authors:
Mary Eminue, University of Alabama
M.A. Lisa Davis, University of Alabama
Ray Lombardi, University of Memphis
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Abstract
Sediment cores extracted from floodplains are archives of past environmental changes, including changes in flood frequency and magnitude. We sampled and analyzed a 4 m sediment core from the Clinch River in Tennessee (USA) to reconstruct Holocene flood varaibility. We sampled and analyzed the core, at 1 cm intervals, mircosedimentological changes in particle size and total inorganic and organic matter content. We used change point analyses and end member modeling of sediment characteristics to discern changes in sedimentation processes. Regression analyses were used to identify coarse sand peaks that correspond to flood deposition, reflecting flood magnitude variability over time. Though preliminary, the results show potential for detail sedimentological analyses to help quantify flood variability over long timescales.
A microsedimentological analysis of Holocene changes in the Clinch River, Tennessee
Category
Poster Abstract
