The Zenith pool is in southeastern Stafford County, Kansas. Oil is produced from the Misener, Maquoketa dolomite, and Viola. Since the three producing formations lie in contact, one with another, and the oil and water from each producing formation are strikingly similar to those in the other formations, it is thought that both oil and water are from a common source of supply. The Zenith pool is considered an excellent example of a stratigraphic type oil field. It is pointed out that the limited amount of structure that can be shown is not sufficient to account for the oil accumulation at Zenith. The limited distribution of the Misener sand and limestone and Maquoketa dolomite; truncation of the producing formations at the north end of the pool; the presence of an effectiv impermeable seal above all producing formations; and lateral changes of effective porosity and permeability in the Viola are thought to be the principal causes of oil accumulation in the Zenith pool.

The Zenith pool was discovered in September, 1937, and has produced more than 3,500,000 barrels of oil to the end of 1940. Five wells have tested the possibilities of Arbuckle production without finding any showings of oil or gas below the Viola. Four of the Arbuckle tests were drilled within the producing area of the Zenith pool.