Geometry and Timing of Gneiss Dome Formation, Southern Tibet, China

;​“我不喜欢你，我不喜欢你，我喜欢你，我喜欢你，我喜欢你，我喜欢你，我喜欢你，我喜欢你，我喜欢你。”4 @ +, -。/ 0 1 2 3 4 5 F Microsoft Word 6.0 Document MSWordDoc。6;​9526861 Lee建议与中国北京国家地震局地质研究所陈文吉教授和郝杰博士合作进行一项综合地质调查，以检验和完善藏南片麻岩圆顶形成的假设机制。实地调查将集中在研究较少的Kangmar穹窿和未研究的Lhagoi Kangri穹窿上。综合调查包括地质制图、构造、运动学、地质年代学和热年代学调查，以记录这两个圆顶内的韧性和脆性变形的几何形状、运动学方向和大小，岩体侵位和变形之间的相对时间，以及侵入物、韧性变形和断层运动的年龄。这些数据与其他工作人员正在进行的地震反射数据相结合，为记录整个岩石圈会聚环境中片麻岩穹丘形成的时空演化提供了机会。导致它们形成的过程对青藏高原的构造演化具有重要意义。因此，从构造、运动和时间演化的角度准确描述这些片麻岩穹丘的发育特征，将对过厚地壳的形成以及青藏高原高海拔地区的形成时间产生重要影响。该项目为中美两国的构造地质学家和地质年代学家提供了一个绝佳的机会，在一个综合的野外和分析研究项目上进行合作，以解决大陆-大陆碰撞构造背景下片麻质圆顶形成过程的基本问题。;Oh +' 0 $ H l D H R:\WWUSER\TEMPLATE\NORMAL。点 9526684 费利西亚史密斯 费利西亚史密斯 @ y S u m m r I f n o r m t I o n ( *微软Word 6.0;e = e D jjjjjjjjj1 ！!!@ 1 T 5 j j j j ~ j j j j j w 9526861李安综合地质调查将与中国北京国家地震局地质研究所陈文吉教授和郝杰博士合作完成，旨在测试和完善西藏南部片麻岩圆顶形成的假设机制。实地调查将集中在研究较少的Kangmar穹窿和未研究的Lhagoi Kangri穹窿上。综合调查包括地质制图、构造、运动学、地质年代学和热年代学调查，以记录这两个圆顶内的韧性和脆性变形的几何形状、运动学方向和大小，岩体侵位和变形之间的相对时间，以及侵入物、韧性变形和断层运动的年龄。这些数据与其他工作人员正在进行的地震反射数据相结合，为记录整个岩石圈会聚环境中片麻岩穹丘形成的时空演化提供了机会。导致它们产生的过程对t具有重要意义

; R o o t E n t r y F " C o m p O b j b W o r d D o c u m e n t D O b j e c t P o o l " " 4 @ + , - . / 0 1 2 3 4 5 F Microsoft Word 6.0 Document MSWordDoc Word.Document.6 ; 9526861 Lee An integrated geological investigation, to be completed in collaboration with Professor Chen, Wenji and Dr. Hao Jie, Institute of Geology, State Seismological Bureau, Beijing, China, is proposed to test and refine postulated mechanisms for the formation of the gneiss domes in southern Tibet. Field-based investigations will focus on the little-studied Kangmar dome and unstudied Lhagoi Kangri dome. Integrated investigations include geologic mapping, structural, kinematic, geochronologic, and thermochronologic investigations within these two domes to document the geometry, kinematics direction, and magnitude of ductile and brittle deformation, the relative timing between pluton emplacement and deformation, and the age of intrusions, ductile deformation and fault motions. These data, integrated with ongoing seismic reflection data by other workers, provide an opportunity to document the space-time evolution of gneiss dome formation within an overall lithospheric convergent setting. The processes that lead to their creation have important implications for the tectonic evolution f the Tib etan plateau. Therefore, an accurate characterization of the development of these gneiss domes in terms of their structural, kinematic, and temporal evolution will have significant implications for the formation of overthickened crust and perhaps the timing that high elevations were achieved on the Tibetan plateau. This project provides an excellent opportunity for structural geologists and geochronologists from the USA and China to collaborate on an integrated field and analytical research project that addresses fundamental questions about processes of gneiss dome formation in a continent-continent collisional tectonic setting. ; Oh +' 0 $ H l D h R:\WWUSER\TEMPLATE\NORMAL.DOT 9526684 Felicia Smith Felicia Smith @ S u m m a r y I n f o r m a t i o n ( * @ @ @ Microsoft Word 6.0 2 ; e = e D j j j j j j j 1 ! ! ! @ l T 5 j j j j j ~ j j j j w 9526861 Lee An integrated geological investigation, to be completed in collaboration with Professor Chen, Wenji and Dr. Hao Jie, Institute of Geology, State Seismological Bureau, Beijing, China, is proposed to test and refine postulated mechanisms for the formation of the gneiss domes in southern Tibet. Field-based investigations will focus on the little-studied Kangmar dome and unstudied Lhagoi Kangri dome. Integrated investigations include geologic mapping, structural, kinematic, geochronologic, and thermochronologic investigations within these two domes to document the geometry, kinematics direction, and magnitude of ductile and brittle deformation, the relative timing between pluton emplacement and deformation, and the age of intrusions, ductile deformation and fault motions. These data, integrated with ongoing seismic reflection data by other workers, provide an opportunity to document the space-time evolution of gneiss dome formation within an overall lithospheric convergent setting. The processes that lead to their creation have important implications for t