The United States Geological Survey has published in Bulletins 641-B, 691-C and 686 A-V structure maps of a large part of Osage county. In Bulletins 641-B and 691-C (Foraker Quadrangle) the strata are mapped with contour interval of five feet, which will show a larger number of folds by closed contours than that area covered by Bulletin 686, in which the contour interval is ten feet.
The large compact area and detailed mapping afford an excellent opportunity for the study of the inter-relations of the folds, and it is the purpose of this paper to point out some of these...
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