Structural History of the Columbus Promontory, Western Piedmont, Southern Appalachians: Thrust Faulting Processes in the Middle Crust of a Paleozoic Orogen

哥伦布海角、西山前、南阿巴拉契亚山脉的构造历史：古生代造山带中地壳的逆冲断层过程

• 批准号: 9004604
• 负责人: Robert Hatcher
• 金额: $ 8.57万
• 依托单位: University of Tennessee Knoxville
• 依托单位国家: 美国
• 项目类别: Continuing grant
• 财政年份: 1990
• 资助国家: 美国
• 起止时间: 1990-06-01 至 1992-11-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9004604&HistoricalAwards=false
• 关键词: Structural; History; Columbus; Promontory; Western

The Blue Ridge-Piedmont thrust sheet of the southern Appalachians is a "type example" of a composite thrust sheet produced by several events, yet the emplacement history, and its relationship to metamorphism and ages of plutonism are not well constrained. This project will investigate a relatively well- exposed area- the Columbus Promontory- in order to address emplacement mechanics and physical conditions of fault development on several scales. Field mapping, fabric data, radiometric age data of plutons and fault rocks, and geothermobarometric data will be collected and employed in an effort to constrain these large structures and discern their evolution.

南阿巴拉契亚蓝岭-山前冲断片是多期复合冲断片的“典型”，但其侵位史及其与变质作用和深部成矿时代的关系尚不明确。该项目将调查一个相对较好的暴露区域-哥伦布海岬-以便在几个尺度上解决断层发育的就位力学和物理条件。野外测绘、构造数据、岩体和断层岩石的放射性年龄数据以及地温压数据将被收集和应用，以限制这些大型构造并辨别它们的演化。