Abstract

Recent mapping has provided a close look at detail relationships contrasting a major infrastructural zone with an adjacent suprastructural area in the southern U.S. Piedmont. The Inner Piedmont belt infrastructural flow folds terminate against a northeast trending polydeformational cataclastic zone as one traverses toward the southeast along the South Carolina — Georgia border. The broad axial part of the infrastructural Inner Piedmont is represented by a complex of sillimanite-bearing mica gneiss and schist. Interlayered amphibolite permits recognition of major nappe-like antiforms and synforms. The southeastern edge of the Inner Piedmont is devided from the axial core by a tectonic slide, and is a separate and distinct nappe. Granitoid gneiss and amphibolite dominate in it.

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