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西准噶尔达尔布特断裂属于左旋走滑深大断裂,控制着西准噶尔地区的地质构造演化进程,同时对克拉玛依油田的形成有着较大的影响.以往针对达尔布特断裂的研究多集中于地质层面,而地球物理工作却几乎没有,物探资料严重缺失,因此开展相关的物探研究,完善达尔布特断裂电性剖面资料,对于今后该区域的研究工作意义重大.研究区域位于达尔布特断裂中段,长度为30km,宽15km,横跨断裂正上方,采用音频大地电磁法(AMT),使用MTU-Net台站式大地电磁仪及GMS-07型MT仪,垂直于断裂布线,线距2km,点距1km,共采集测点数据240个.利用二维OCCAM反演方法和快速松弛反演(RRI)反演方法进行二维反演,根据反演结果分析,区域内达尔布特断裂呈北东-南西走向,略呈弧形,沿阿克巴斯陶岩体边缘通过,总体表现为断裂两端1~6号线、11~16号线相对低阻,阻值范围在0.1~100欧姆米之间,中间段7~10号线相对高阻,阻值范围在100~1000欧姆米之间,断裂深度平均5km左右,最大深度大于10km,平均跨度2~4km,断裂倾向南东.说明达尔布特断裂为深大断裂.
The Darusett fault in the West Junggar belongs to a large left-slip-slip deep fault that controls the evolution of the geological structure in the West Junggar region and also has a great influence on the formation of the Karamay Oilfield. However, previous studies on the Dalbott fault mostly focused on the geological aspects , But there is almost no geophysical work and there is a serious lack of geophysical data, so it is of great significance to carry out related geophysical investigations and improve the data of the Dalbott fault electrical section in the future.The study area is located in the middle of Dalbott fault, Length of 30km, width of 15km, across the fault just above, the use of audio earth magnetometry (AMT), using MTU-Net station type earth magnetometer and GMS-07 MT instrument, perpendicular to the fracture wiring, line spacing 2km, point A total of 240 data points were collected at a distance of 1km from the data.The 2D OCCAM inversion and RRI inversion were applied to perform 2D inversion. According to the inversion results, - South-west strike, slightly arcuate, passing along the edge of the Aakbasse body, showing generally lines 1 to 6 at both ends of the fracture and relatively low resistance on lines 11-16 with resistance in the range of 0.1 to 100 ohm Between the middle section 7 to 10 Relatively high resistance, the resistance range between 100 to 1000 ohm-meters, the average fracture depth of about 5km, the maximum depth is greater than 10km, the average span of 2 ~ 4km, fracture tends to southeast. 明达尔布特 said fault is deep fault.