东天山戈壁沙漠覆盖区重磁场特征与构造格架研究

依据重力和航磁异常数据及其处理结果（Tilt导数和欧拉反褶积），对东天山戈壁沙漠覆盖区断裂构造和岩体重新进行了解译，结合岩石密度和磁性特征及前人研究成果，分析了东天山的构造格架。结果表明，东天山构造线主体方向为近EW向，构造格局具有南北分带的特点，重力和航磁异常图上密集梯级带对应研究区一级断裂，即康古尔塔格一黄山深断裂和阿奇克库都克一沙泉子断裂。重力和航磁原始异常经过Tilt导数和欧拉反褶积处理后，微弱信息得到明显增强，进而识别出一些新的断裂构造和岩体。

Study on gravity and magnetic field characteristics and tectonic framework in gobi desert in eastern Tianshan Mountains

Based on the data of gravity and aemmagnetic anomalies and their processing results （Tilt derivative and Euler deconvolu- tion）, the authors re-explained the fault structures and reek mass in the Gobi desert area in eastern Tianshan Mountains and analyzed the structure framework of eastern Tianshan Mountains in details in combination with rock density and magnetic characteristics as well as the previous research results. It was concluded that the direction of the main tectonic line for eastern Tianshan Mountains was EW strike and characteristic of north south zoning; the intensive gravity gradient belt was correspondent to level one fracture on the map of gravity and aeromagnetie anomalies. Through the process of Tilt derivative and Euler deconvolution, the weak information of gravity and aeromagnetic anomalies were intensified and some new fracture structures and rock mass were identified.