Constraints on the Anadarko Basin-Wichita uplift boundary interpreted from aeromagnetic data

Modeling and interpretation of aeromagnetic data across the transition between the Anadarko basin and the Wichita uplift in the vicinity of the scarp on the Meers fault (Fig. 1) constrains structural relationships and lithologic contrasts at this boundary. We digitized aeromagnetic data from the map based on a detailed survey flown in 1954 (U.S. Geological Survey, 1975). The flight lines for this survey were oriented east-west, spaced 0.25 mi apart, and flown 500 ft above the ground. The digitized data were gridded using a minimum-curvature gridding program (MINC; Webring, 1981) and plotted as a color-shaded relief map using an unpublished program written by M. W. Webring. The color-shaded relief map was shown in the Anadarko Basin Workshop poster session. Figure 2 is a generalized contour map made from the digitized data, using the unpublished program CONTOURS, written by R. H. Bracken, R. H. Godson, and M. W. Webring.