Geologic controls on sediment distribution and transport pathways around the Chandeleur Islands, LA., USA
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Abstract
Geophysical surveys around the Chandeleur Islands provide the necessary data to map the thickness and distribution of the Holocene deposit associated with this barrier island system. This system rests uncomformably on St. Bernard Delta deposits of the Mississippi Delta plain and is thinnest under the central part of the island chain and thickest at the northern and southern ends. The zone of divergence in the bidirectional littoral transport system coincides with the thin central part. An estimate of northward littoral transport rate based on lithosome age and the volume of sediment that has accumulated at the northern end of the transport cell suggests the average transport rate over the life of the system is greater than present day fair-weather estimates. This difference may be attributed to changes in transport rates through the life of the system, to changes in the rate of sea-level rise or to storms playing a more dominant role than fair-weather waves in littoral transport.
Study Area
| Publication type | Conference Paper |
|---|---|
| Publication Subtype | Conference Paper |
| Title | Geologic controls on sediment distribution and transport pathways around the Chandeleur Islands, LA., USA |
| Volume | 3 |
| Year Published | 2011 |
| Language | English |
| Publisher | World Scientific |
| Contributing office(s) | Woods Hole Coastal and Marine Science Center |
| Description | 16 p. |
| Larger Work Type | Book |
| Larger Work Subtype | Conference publication |
| Larger Work Title | The proceedings of the Coastal Sediments 2011 |
| First page | 2184 |
| Last page | 2197 |
| Conference Title | Coastal Sediments 2011 |
| Conference Location | Miami, Florida, United States |
| Conference Date | May 2-6, 2011 |
| Country | United States |
| State | Louisiana |
| Other Geospatial | Chandeleur Islands |
| Online Only (Y/N) | N |
| Additional Online Files (Y/N) | N |
| Google Analytic Metrics | Metrics page |