COLLABORATIVE RESEARCH: Geochronological and Geological Characteristics of Terranes in the Central Georgia Piedmont

南阿巴拉契亚山脉的皮埃蒙特已被证明涉及结晶岩的主要反冲，可能是由于地壳剥离，但也已被证明有证据表明阿巴拉契亚山脉南部皮埃蒙特的主要伸展特征，因此是有争议的，竞争的模型具有相同的地形，既有北美本土的，也有外来的。并且有主要的边界断层，一种是伸展断层，另一种是挤压断层，第三种是走滑运动断层。这个协作的、基于实地的项目的中心是建立更重要的地形及其边界断层的历史。这项工作包括在佐治亚州梅肯附近的贝莱尔、萨凡纳河和卡罗莱纳地体，以及分隔卡罗莱纳河和萨凡纳河地体的莫多克断层中绘制地图、岩石学和年代测定。研究结果有望解决当前构造模型之间的主要分歧，并为验证地壳剥离发生在晚古生代阿勒卡尼亚造山运动开始的重要假设提供进一步的手段。

The Piedmont of the Southern Appalachians has been shown to involve major overthrusts of crystalline rocks, possibly due to crustal delamination, but have also been shown to have evidence for major extensional features of the Piedmont in the southern Appalachians is therefore controversial, with competing models having the same terranes both autochthonous with respect to North America and exotic, and having major boundary faults extensional in one model, compressional in another with strike-slip motion in a third. This collaborative, field-based project centers on establishing the history of the more important terranes and their bounding faults. The work involves mapping, petrology and age dating within the Belair, Savannah River and Carolina terranes near Macon, Georgia, and on the Modoc fault which separates the Carolina and Savannah River terranes. Results are expected to resolve points of major disagreement among current tectonic models and provide a further means of testing the fundamentally important hypothesis that crustal delamination occurred at the onset of the late Paleozoic Alleghanian orogeny.