Mechanisms and Timing of the Exhumation of an Ultra-High Pressure Terrain, Dabie Shan, China

中国大别山超高压地形折返的机制和时间

• 批准号: 9305107
• 负责人: David Rowley
• 金额: $ 15万
• 依托单位: University of Chicago
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1993
• 资助国家: 美国
• 起止时间: 1993-07-01 至 1996-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9305107&HistoricalAwards=false
• 关键词: Mechanisms; Timing; Exhumation; Ultra; Pressure

Diamond-bearing rocks of the Dabie Shan metamorphic province of South China are among the most unique rocks exposed on the surface of the earth and present a major challege to tectonicists in terms of explaining their origins. Mineralogy of these rocks indicate that they originated at the surface, were then subjected to enormous pressures by burial, and finally exhumed to the surface. Although much attention has been paid to the petrologic character of the affected rocks, little work has been concentrated on the structures that are ultimately responsible for their unique history. This project is geared to conducting such studies and will attempt to establishe the geometry and kinematics of the structures and will establish timing and cooling relations.

中国南部大别山变质带中的含金刚石岩石是地球表面出露的最独特的岩石之一，对构造学家解释其成因提出了重大挑战。这些岩石的矿物学研究表明，它们起源于地表，然后受到巨大的埋藏压力，最终被挖掘到地表。尽管人们对受影响岩石的岩石学特征给予了很大的关注，但对最终导致其独特历史的构造的研究却很少。该项目旨在进行这样的研究，并将试图建立结构的几何和运动学，并将建立时间和冷却关系。