Field Investigations of Potential Terrane Boundaries in the Eastern Piedmont of North and South Carolina

在阿巴拉契亚进行的许多研究的一个基本目标 地质构造学的目的是确定 造山带中部和东部。 最近发现的 美国中南部卡罗莱纳板岩带的阿卡多-波罗的海三叶虫 卡罗莱纳清楚地表明，这部分皮埃蒙特是一个异国情调的 中世纪以后在北美洲生长的一种珊瑚礁 寒武纪 最近的研究表明， 地层学、古地磁学和 北卡罗来纳州中南部的阿布尔马尔地区和 位于南卡罗来纳州中部，表明存在一个重要的火山 亚伯马尔和哥伦比亚之间的边界。 这个项目的目的 是准确定位和确定边界的性质 在北卡罗莱纳和南卡罗来纳州层序之间。 这将是 通过地质填图、编图、 两口井之间区域的岩石学研究 序列的 这项研究将大大提高我们对以下问题的认识： 阿巴拉契亚山脉南部的冰川增积历史 促进了环大西洋地区外来物种的相互联系 地区 本研究将为今后的研究提供一个模式， 其他古老的造山带

A fundamental goal of much ongoing research in Appalachian tectonics is to determine the history of terrane accretion in the central and eastern parts of the orogen. The recent discovery of Acado-Baltic trilobites in the Carolina slate belt in central South Carolina clearly indicates that this part of the Piedmont is an exotic terrane that was accreted to North America subsequent to the Middle Cambrian. Recent studies have indicated major differences in stratigraphy, paleomagnetism, and tectonothermal history between the Ablemarle area in south-central North Carolina and the Columbia area in central South Carolina, suggesting the presence of an important terrane boundary between Ablemarle and Columbia. The purpose of this project is to accurately locate and determine the nature of the boundary between the North and South Carolina sequences. This will be accomplished by a program of geologic mapping, map compilation, and petrological studies in the area between the two well studied sequences. This study should substantially improve our knowledge of the history of terrane accretion in the southern Appalachians as well as facilitate the correlation of exotic terranes in the circum-Atlantic region. This study will provide a model for subsequent studies in other older orogenic belts.