Continued Investigation of the Formation and Evolution of Grenville-age Crust in the Llano Uplift, Central Texas

继续调查德克萨斯州中部拉诺隆起格伦维尔时代地壳的形成和演化

• 批准号: 9219484
• 负责人: Sharon Mosher
• 金额: $ 11.92万
• 依托单位: University of Texas at Austin
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1993
• 资助国家: 美国
• 起止时间: 1993-01-01 至 1995-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9219484&HistoricalAwards=false
• 关键词: Continued; Investigation; Formation; Evolution; Grenville

The Llano uplift and of central Texas records a complex history of Grenville and Pre-Grenville tectonism that has not been overprinted by later orogenic events. This study will focus on two of the more significant questions regarding the evolution of this mid-Proterozoic crust: the extent of pre-Grenville crust and its orogenic history, and the timing of Grenville-age regional metamorphism and deformation. Results are expected to generate additional understanding of the nature, extent, and timing of mid- Proterozoic tectonism along the southern margin of North American.

德克萨斯州中部的拉诺隆起记录了一个复杂的 格伦维尔和前格伦维尔构造运动的历史 没有被后来的造山运动所覆盖。 本研究 我将集中讨论两个更重要的问题 关于中元古代地壳的演化： 前格伦维尔地壳的范围及其造山历史， 格伦维尔时代区域变质作用的时间， 变形 预计结果将产生额外的 了解中期的性质、程度和时间， 华北北缘元古宙沿着的构造活动 美国人