Thermochronologic Evidence Linking the Adirondack and Connecticut Valley Regions of Post-Early Cretaceous Unroofing

连接阿迪朗达克和康涅狄格河谷地区早白垩世后屋顶剥落的热年代学证据

• 批准号: 9909210
• 负责人: Mary Roden-Tice
• 金额: $ 8.26万
• 依托单位: SUNY College at Plattsburgh
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2000
• 资助国家: 美国
• 起止时间: 2000-03-01 至 2003-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9909210&HistoricalAwards=false
• 关键词: Thermochronologic; Evidence; Linking; Adirondack; Connecticut

9909210Roden-TiceAfter extensive episodes of compressional faulting during orogenesis it is not uncommon for a region to undergo a period of relaxation and regional extension, accompanied by differential uplift and erosion. However, the timing of these events relative to compressional phases and the relationship of uplift to preexisting faults is unclear. This project will examine the uplift, erosion and post-orogenic reactivation faulting in a portion of the New England Appalachians where preliminary data has indicated Cretaceous uplift and erosion with a suggestion that differential uplift is spatially associated with older, compressional faults. Results are expected to clarify the pattern of post-orogenic uplift and erosion and may provide insight into the general processers of regional tectonic transition from compressional to extensional environments.

9909210Roden-Tice 在造山作用期间发生广泛的挤压断层之后，一个区域经历一段时期的松弛和区域伸展并伴有差异隆起和侵蚀的情况并不罕见。 然而，这些事件相对于压缩阶段的时间以及隆起与先前存在的断层的关系尚不清楚。 该项目将研究新英格兰阿巴拉契亚山脉部分地区的隆起、侵蚀和造山后再活动断层，初步数据表明白垩纪隆起和侵蚀，并表明差异隆起在空间上与较古老的挤压断层有关。 研究结果有望阐明造山后隆升和侵蚀的模式，并可能为了解区域构造从挤压环境向伸展环境转变的一般过程提供见解。