Back-Barrier Response to Sea-Level Rise, Eastern Shore of Virginia1
Kenneth Finkelstein, Marie A. Ferland, 1987. "Back-Barrier Response to Sea-Level Rise, Eastern Shore of Virginia", Sea-Level Fluctuation and Coastal Evolution, Dag Nummedal, Orrin H. Pilkey, James D. Howard
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The barrier and back-barrier environments of Virginia were examined to determine the effects of sea-level change on the resulting stratigraphy. Relative sea-level rise and/or a local sediment deficit have caused the retreat of these barrier islands during the Holocene. The results, reflected by the stratigraphy, are a narrowing of the back-barrier region, a decrease in the tidal prism with a probable constriction of inlets, and an increase in the infilling of marshes and tidal flats associated with calmer water conditions.
Core data show the progressive fine-grained infilling of the back-barrier system. As infilling proceeds, the general back-barrier environment passes from a higher energy lagoon to a lower energy salt marsh and tidal flats. The sedimentary pattern depicts a fining-upward “regressive” stratigraphy behind the receding barriers.
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Sea-Level Fluctuation and Coastal Evolution - This Special Publication is the result of a symposium in honor of W. Armstrong Price held at the first SEPM Midyear Meeting at San Jose, California, on August 12, 1984. The factors controlling relative sea-level change along our shores are varied and, at best, imperfectly understood. Yet, the relative rate of change is what controls shoreline erosion, the arrangement of sedimentary facies of the coastal zone, and the character of deformities within the coastal stratigraphic record. Therefore, these papers address sea-level changes, shoreline responses, and the controls on the three-dimensional geometry of the consequent lithosomes; in short, the architecture of the coastal depositional systems.