Abstract
The westward thrust of the Ozark uplift was opposed by the granite ridge of Kansas, causing rotational stresses in the formations lying between them. These rotational stresses caused shearing in directions approximately N. 25° E. and N. 65° W., and also tensional stresses in a northeast and southwest direction and compression in a northwest and southeast direction, as shown in the experiments of Mead. The conclusions are as follows: (1) The belts of short, en echelon, parallel faults were caused by horizontal movement along shear lines striking about N. 25° E. (2) The noses striking in a northwest direction were caused by shearing stresses along lines about N. 65° W., together with compression forces acting in a northwest-southeast direction. (3) The f lds striking in a northeast-southwest direction were caused by compression forces described above. (4) These phenomena are the result of rotational stresses between the Ozark uplift and the granite ridge of Kansas.
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