A detailed subsurface evaluation of the Camerina Zone in the Maurice field area reveals a marked similarity with the environment of deposition of these sediments in the Lake Arthur depocenter. A stratigraphic analysis of the two areas was selected for study because each is characterized by the processes which provide a geological framework for the development of other local embayments in the subsurface of south Louisiana.

Correlation sections were prepared to illustrate the influence of growth faulting on the development of the sediments in each area. The effect of this fault system is further supported by isopachous maps of the Heterostegina "lime"--Camerina interval and the Camerina-Miogypsinoides Sand interval. Each displays a pronounced thickening of section on the downthrown sides of the faults relative to a corresponding section on the upthrown side. In addition, a marked increase in the number of discrete sandstone bodies occurs on the coastal sides of these south-dipping fault systems, as illustrated on a sandstone-distribution map of the Camerina interval.

The regional Camerina subsurface interpretation affords a comparison of the basic structural patterns in the Lake Arthur and Maurice depocenters, and shows the relations between the growth faults which affect the two areas.

Significant gas reserves recently have been discovered in the Miogypsinoides Sand of the Camerina Zone at Maurice field. A detailed subsurface map of this area is presented to evaluate further the extent and nature of local structure in this interval and its relative importance in the regional trend.

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