Collaborative Research: Kinematics and Geochronology of the Gold Hill Shear Zone: Implications for Accretion of the Peri-Gondwanan Carolina Zone in the Southern Appalachians

0106112 Hibbard0106050 Hames0106091 Miller卡罗莱纳带向劳伦蒂亚沉积的时间和性质是现代阿巴拉契亚山脉南部地质学中最重要、约束最少的构造问题之一。原来的缝合线已经被随后沿卡罗莱纳带西缘的阿勒格尼亚运动所覆盖和抹去，排除了对缝合线的直接研究。金山剪切带是卡罗莱纳带西部的一个突出特征，它可能记录了缝合事件产生的特征，这些特征由于剪切带距离实际地体边缘的距离而被保存下来。该项目涉及对金山剪切带的综合构造和地质年代学研究，以试图了解卡罗莱纳带与劳伦蒂亚原始缝合和碰撞的时间、运动学和地壳亲和力。研究结果将有助于阿巴拉契亚山脉及其奇异地体的重建。

0106112 Hibbard0106050 Hames0106091 MillerThe timing and nature of accretion of the Carolina Zone to Laurentia is one of the more significant and least constrained tectonic problems in modern southern Appalachian geology. The original suture has been overprinted and obliterated by subsequent Alleghanian motion along the western margin of the Carolina zone, precluding direct investigation of the suture. The Gold Hill Shear Zone is a prominent feature in the western part of the Carolina Zone and may record features produced by the suturing event that have been preserved due to the distance of the shear zone back from the actual terrane margin. The project involves an integrated structural and geochronologic study of the Gold Hill Shear Zone in an attempt to understanding timing, kinematics and crustal affinities of the original suture and collision of the Carolina Zone with Laurentia. Results will help develop reconstruction of the Appalachians and their exotic terranes.