Sand shoal development on muddy Mississippi river delta shelf
Trinity and Ship Shoals are transgressive sand bodies on the Louisiana inner continental shelf, and they represent the reworked sands of the abandoned Holocene Teche and Maringouin deltas. The development of these shoals is initiated by an episode of delta abandonment followed by subsidence-enhanced sea level rise. Through the process of shoreface retreat, the abandoned delta lobe evolves from an erosional headland with flanking barrier islands to a barrier-island arch and finally into a submerged inner-shelf shoal system. Trinity and Ship Shoals represent the final stage in the Mississippi River delta barrier shoreline cycle and provide a possible modern analogue for some Cretaceous shelf sandstones of the Western Interior. More than 1000 km (620 mi) of high-resolution seismic profiles correlated with cores provide the data base for interpretation of the depositional history of sand-body development on the muddy Louisiana shelf.
- Research Organization:
- Louisiana Geological Survey, Baton Rouge, LA
- OSTI ID:
- 6386579
- Report Number(s):
- CONF-8405216-
- Journal Information:
- Am. Assoc. Pet. Geol., Bull.; (United States), Journal Name: Am. Assoc. Pet. Geol., Bull.; (United States) Vol. 68:4; ISSN AAPGB
- Country of Publication:
- United States
- Language:
- English
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Geologic framework of sand shoals on muddy Mississippi delta shelf
Geologic framework of sand shoals on muddy Mississippi delta shelf
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CENOZOIC ERA
CONTINENTAL MARGIN
CONTINENTAL SHELF
DEPOSITION
FEDERAL REGION VI
GEOLOGIC AGES
GEOLOGIC HISTORY
LOUISIANA
MISSISSIPPI RIVER
NORTH AMERICA
RESERVOIR ROCK
RIVERS
ROCKS
SANDSTONES
SEDIMENTARY ROCKS
STREAMS
SURFACE WATERS
TERTIARY PERIOD
USA