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The AAPG/Datapages Combined Publications Database

AAPG Bulletin


Volume: 65 (1981)

Issue: 9. (September)

First Page: 1682

Last Page: 1682

Title: Washover of Deltaic Barriers on Louisiana Coast: ABSTRACT

Author(s): Ron Boyd, Shea Penland

Article Type: Meeting abstract


Washover processes are an important factor in the transgressive development of barrier coastlines. Sea level elevation necessary for overwash is composed of a storm surge component, a wave setup component, a wave runup component, and an astronomical tide component. The nature and severity of overwash are a function of overwash elevation, its frequency of occurrence, and regional barrier geometry.

Washover deposits on Louisiana barriers commonly account for over 50% of total sediment storage. Louisiana barriers have evolved by deltaic distributary abandonment; continuing sequential evolution of Mississippi delta complexes has generated a corresponding sequence of transgressive barriers. The resulting spectrum of barrier geometries has provided an ideal field site for the examination of washover form variability and its controlling processes.

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Copyright 1997 American Association of Petroleum Geologists