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Stratigraphic Traps in Southeastern Louisiana
The New Orleans Geological Society Study Group (*)
Tertiary and Quaternary deposition in southeastern Louisiana created an area that is highly favorable for the occurrence of stratigraphic traps. The types of stratigraphic traps possible in this area are: (1) primary traps--including channel, bar and bar-finger sands, and possibly reef type deposits; (2) secondary traps--commonly termed unconformity traps; and (3) combination traps-- including strandline traps, pinch-outs against salt domes, and primary traps associated with a structure. A number of economically valuable stratigraphic traps have already been found even though exploration to date has been based primarily on a structural approach. For the most part these traps are poorly delineated and difficult to classify. A few of the known traps are discussed, and possible methods are suggested for determining their origins and for finding similar types.
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