The “Turkey Mountain lime” consists of three members: an upper porous, a middle cherty gray, and a lower soft white. The three together average about 60 feet in thickness. Because of the unconformity at the top the whole section is seldom found.
Production from this lime declines rapidly in the initial stage, but generally declines slowly in the settled stage. The ultimate yield is about 8,000 barrels per acre. Production conforms to anticlinal structure and there is no record of synclinal producing wells. The eroded Turkey Mountain surface is undoubtedly the reservoir of many “Wilcox” oil fields. The source of the oil is probably the black and green shales above the “Hominy” sand or the “Turkey Mountain lime” itself.
Figures & Tables
Structure of Typical American Oil Fields, Volume I
Modern petroleum geology in the United States had its beginning in the first decade of the 20th Century when the U.S. Geological Survey began mapping the structure of the rocks in and near old fields in order to discover the various types of structural conditions under which oil and gas are trapped. Structural geology has evolved as a branch of the broader science far more rapidly than have methods of mapping the attitude of rocks at the surface. This volume, published in the late 1920s, was designed to afford authoritative and modern descriptions of the structure of typical oil fields in the United States. Each of the 30 fields contained here is described by an author who is intimately familiar with the available data. The relationship of structure at the surface and at depth for different terranes is clearly set forth wherever the strata are not parallel. Fields include: McKittrick, California; Fairport, Kansas; Urania, Louisiana; Artesia, New Mexico; Burbank, Oklahoma; Cabin Creek, West Virginia; and Luling, Texas.