Analysis of Pre-Alleghanian Faults and Related Structures inthe Appalachian Blue Ridge, North Carolina: Initiation of the Southern Appalachian Thrust System

北卡罗来纳州阿巴拉契亚蓝岭前阿勒根阶断层及相关结构分析：南阿巴拉契亚逆冲系统的启动

• 批准号: 8816343
• 负责人: Robert Hatcher
• 金额: $ 7万
• 依托单位: University of Tennessee Knoxville
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1989
• 资助国家: 美国
• 起止时间: 1989-01-01 至 1991-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8816343&HistoricalAwards=false
• 关键词: Analysis; Pre; Alleghanian; Faults; Related

The structure of the southern Appalachian Orogen is dominated by large, continent-directed thrust fauults that formed during at least two and possibly three Paleozoic orogenies. One of the earliest faults, the Hayesville, may be part of a major early Paleozoic suture that extends from Newfoundland to Alabama. The fault is pre-metamorphism and may be due to the early stages of tectonic accretion and crustal contradiction following Late Pre Cambrian crustal extension and passive margin development. This project will map the fault in southwestern North Carolina, determine the movement history and develop a structural chronology. Results will contribute to general understanding of orogenic processes in addition to that of Appalachian structure and tectonics.

南阿巴拉契亚造山带的构造以大型逆冲断层为主，这些逆冲断层形成于至少两次或三次古生代造山带。最早的断层之一，海斯维尔断层，可能是一条从纽芬兰延伸到阿拉巴马州的主要古生代缝合线的一部分。该断裂为前变质作用，可能是由于前寒武纪晚期地壳伸展和被动边缘发育后的早期构造增生和地壳矛盾所致。该项目将绘制北卡罗来纳州西南部的断层图，确定其运动历史，并制定构造年代学。研究结果将有助于对阿巴拉契亚构造和构造以外的造山过程的一般理解。