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The AAPG/Datapages Combined Publications Database

AAPG Bulletin


Volume: 69 (1985)

Issue: 9. (September)

First Page: 1428

Last Page: 1428

Title: Correlation of Beds Within Ferry Lake Previous HitAnhydriteNext Hit of Gulf Coastal Plain: ABSTRACT

Author(s): Jeffrey G. Pittman

Article Type: Meeting abstract


The Lower Cretaceous Ferry Lake Previous HitAnhydriteNext Hit is one of the most distinctive, widespread sedimentary units within the Gulf coastal plain. The formation extends from east Texas across southern Arkansas, northern Louisiana, central Mississippi, and southern Alabama, all the way to south Florida where it has been correlated with Previous HitanhydriteNext Hit beds of the Punta Gorda formation. The formation consists of alternating carbonates, claystones, and sulfate beds (altered from original gypsum to Previous HitanhydriteNext Hit during burial) deposited in a predominantly subaqueous environment within a broad lagoon located shoreward of an extensive reef fringing the shelf edge.

Highly resistive Previous HitanhydriteNext Hit beds within the Ferry Lake Previous HitAnhydriteNext Hit, and within formations above and below, may be correlated across east Texas, Arkansas, Louisiana, and Mississippi, using a network of closely spaced electrical logs. The geographic distribution of these Previous HitanhydriteNext Hit beds is variable. Some Previous HitanhydriteTop beds may be traced across the entire area, whereas other beds are less widespread. The difference in geographic distribution of these beds reflects the variation in size and configuration of the extensive lagoonal sea in which they were deposited. Water depth, positive conditions around stable areas, subsidence, duration of each evaporitive pulse, and areal salinity variation are among the factors that controlled the thickness of individual beds accumulating within the lagoon.

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