Abstract
The Lower Cretaceous trend extends from South Arkansas through North Louisiana, Mississippi, and into southwestern Alabama. To date, oil and (or) gas production has been established in 142 fields (43 in Arkansas, 69 in Louisiana, and 30 in Mississipi). All of the fields are within the salt basin and salt movement is believed responsible for many of the producing structures. In most places, the structures increase in complexity with depth. A simplified stratigraphic section is shown. Major unconformities occur both above and below the Lower Cretaceous. One of the most striking unconformities is that caused by uplift after Lower Cretaceous and prior to the deposition of the Upper Cretaceous. Regional structural maps delineate the configuration on top of the Lower Cretaceous and on the base of the Perry Lake anhydrite. Structural maps and cross sections are included on the following pools: in Arkansas--Fouke, Smackover, Spirit Lake, Wesson; in North Louisiana--Ada, Haynesville, East Haynesville, Logansport, and Sugar Creek; in Mississippi--Bolton, Magee, Martinville, Raleigh, Soso; and in Alabama--Citronelle. End_of_Article - Last_Page 1603------------
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