Crustal assembly of Myanmar: establishing a geo/thermochronologic data base for magmatism, metamorphism, deformation, and exhumation in central and eastern Myanmar

缅甸地壳组合：建立缅甸中东部岩浆作用、变质作用、变形和折返地质/热年代学数据库

• 批准号: 32111795
• 负责人: Professor Dr. Lothar Ratschbacher
• 金额: --
• 依托单位: Institut für Geologie
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2006
• 资助国家: 德国
• 起止时间: 2005-12-31 至 2007-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/32111795?language=en
• 关键词: Crustal; assembly; Myanmar; establishing; geo

The Mesozoic to Recent tectonic evolution of Asia is the result of the convergence and collision of fragments of Gondwana and Eurasia. Whereas it is widely accepted that the collision of India with Eurasia substantially thickened and uplifted the Tibetan plateau, there is considerable controversy about the amount and distribution of strain in eastern Tibet and Southeast-Asia. In the Himalayas, Pamirs, and Tibet a growing geochronologic database is placing constraints on the timing and duration of magmatic, metamorphic, deformation, and exhumation episodes. In contrast, there is very little comparable modern geo/thermochronology, petrology, and structural analysis for the areas south and southeast of the eastern Himalayan syntaxis. This project will initiate the acquisition of amodern geo/ thermochronologic data base by dating recently collected samples from east-west traverses across central and eastern Myanmar, the state that contains the eastern plate boundary of India and that has been nearly inaccessible over the last decades.

亚洲中生代至近代的构造演化是冈瓦纳大陆和欧亚大陆板块汇聚碰撞的结果。虽然人们普遍认为印度与欧亚大陆的碰撞使青藏高原显著增厚和隆起，但对西藏东部和东南亚的应变量和分布存在相当大的争议。在喜马拉雅山、帕米尔高原和西藏，不断增长的地质年代学数据库正在限制岩浆、变质、变形和折返事件的时间和持续时间。相比之下，很少有可比较的现代地质/热年代学，岩石学和构造分析的地区南部和东南部的东喜马拉雅结。该项目将开始获取现代地质/热年代学数据库，方法是对最近从缅甸中部和东部的东西向横贯线上收集的样本进行年代测定，缅甸是印度东部板块边界所在的邦，过去几十年来几乎无法进入。