Original published in D.F. Merriam, ed., 1964, Symposium on cyclic sedimentation: Kansas Geological Survey, Bulletin 169, pp. 415-425

Figure 5--Power spectra for logs of Figure 4: (1) Sohio No. 2 Krause; (2) Carter No. 1 Vogel; (3) Imperial No. 3 Vogel; (4) Prugh No. 1F Jackson; (5) Westgate Greeland No. 1 Roland.