U.S.-China Cooperative Research: Xinjiang Magnetotelluric Transect

本文介绍了张建东博士和张建东博士关于“新疆大地电磁断面”的建议。 斯坦利·H犹他州大学的沃德和赵教授 地球物理地球化学研究所的景祥 探索是由美国国家科学基金会和中国部联合赞助的 地质学。 研究人员提出了一种大地电磁（MT）地球物理方法， 调查中国新疆省的一部分，第一次看 在该地区的地电结构直接北部的 青藏高原。 调查将探索一个南北1000公里 从准噶尔盆地开始， 向北，越过天山山脉，进入塔里木盆地， 南方 大地电磁法是一种被动的、 勘探方法，用于绘制电气变化 地下的电导率。 调查人员认为MT是 非常适合新疆等大部分未开发地区。 该样带的完成将补充其他MT调查 已经在中国进行了。 这些数据应 与内华达州塞维尔造山带的数据相当， 犹他州和科罗拉多高原的Laramide变形， 挤压构造力类似于那些在工作， 中亚在中生代晚期和早期 新生代 利用这些样带的结果， 不仅可以检查地壳结构， 识别导电挥发性流体或部分熔化的区域 在深度。 承认这些区域是必要的， 了解地壳演化。

This proposal on "Xinjiang Magnetotelluric Transect" between Dr. Stanley H. Ward of the University of Utah and Professor Zhao Jingxiang of the Institute of Geophysical and Geochemical Exploration is jointly sponsored by NSF and the Chinese Ministry of Geology. The investigators propose a magnetotelluric (MT) geophysical survey of a portion of China's Xinjiang Province, the first look at the geoelectric structure of the area directly north of the Tibetan Plateau. The survey will explore a north-south 1000 km line of MT stations (transect) running from the Junggar Basin in the north, across the Tien Shan Range, into the Tarim Basin in the south. The MT method is a passive, deep-sounding exploration method used to map variations in the electrical conductivity of the subsurface. The investigators believe MT is ideally suited for largely unexplored areas such as Xinjiang. The completion of this transect will augment other MT surveys that have been conducted in China. These data should be comparable to data on the Sevier orogenic belt of Nevada and Utah and the Laramide deformation of the Colorado Plateau where compressional tectonic forces similar to those at work in Central Asia were at work in the late mezozoic and early cenozoic. Using the results of transects such as these, it is possible not only to examine crustal structure, but also to recognize zones of conductive volatile fluids or partial melting at depth. Recognition of such zones is necessary for a complete understanding of crustal evolution.