Abstract

Introduction

In earlier papers* the senior author has presented an interpretation of the structure of the Piedmont region as exhibited in Maryland, and suggested that it is possible to recognize in the highly crystalline and much metamorphosed rocks of the area lines of bedding which indicate that the crystalline rocks of the Piedmont possess a general structure comparable to that of the Appalachians lying to the westward. In the present paper it is proposed to give a somewhat more detailed discussion of a local area, the special problem of the junior author, in which the type of folding is well exhibited and more easily seen because of the sharp differences, lithological and topographical, between the limestone or marble and the adjacent rocks.

The area under discussion occupies a tract of approximately 300 square miles, represented on the southern portions of the Belair, Parkton, and Westminster sheets and the northern part . . .

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