新疆石油地质

新疆石油地质 ›› 2008, Vol. 29 ›› Issue (1): 7-11.

• 油气勘探 •    下一篇

准噶尔盆地基底构造分区的重磁异常分析

赵俊猛1,2, 马宗晋2, 姚长利3, 黎益仕4, 刘占坡2   

  1. 1.中国科学院青藏高原研究所, 北京100085;
    2.中国地震局地质研究所, 北京100029;
    3.中国地质大学, 北京100083;
    4.中国地震局, 北京100036
  • 收稿日期:2007-10-30 发布日期:2020-08-10
  • 作者简介:赵俊猛(1957-), 男, 辽宁东港人, 研究员, 博士, 构造地质,(Tel) 010-62849699(E-mail) zhaojm@itpcas.ac.cn.

Analysis on Gravity-Magnetic Anomalies in Basement Geotectonic Divisions in Junggar Basin

ZHAO Jun-meng1,2, MA Zong-jin2, YAO Chang-li3, LI Yi-shi4, LIU Zhan-po2   

  1. 1. Institute of Tibetan Plateau, CAS, Beijing 100085, China;
    2. Institute of Geology, China Earthquake Administration, Beijing 100029,China;
    3. China University of Geosciences, Beijing 100083, China;
    4. China Earthquake Administration, Beijing 100036, China
  • Received:2007-10-30 Published:2020-08-10

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摘要： 利用准噶尔盆地及周边地区1∶200 000 重磁异常, 采取多种处理与分析方法, 在准噶尔盆地内共确定主要断裂48 条, 其中一级断裂7 条、二级断裂6 条、三级断裂35 条。尤其是通过详细的资料处理, 并结合盆地盖层沉积特点确定了基底南北、东西向断裂F6、F1 的存在。研究认为, 准噶尔盆地可划分为Ⅰ(南部) 、Ⅱ(中部) 、Ⅲ(北部) 3 个一级构造区, 其中Ⅱ(中部) 构造区可进一步划分为4 个亚区并构成盆地内部的4 个象限, 而其中的每个象限又可划分出若干个次一级的构造单元。这4 个象限的结构、密度分布、磁化强度各不相同, 形成空间与时间上的差异特征。

关键词: 准噶尔盆地, 基底构造格架, 重磁联合反演, 不同尺度滤波, 密度, 磁化强度

Abstract: Based on the 1:200 000 gravitational and magnetic anomalies, the 48 faults in Junggar basin including 7 of first class, 6 of second class and 35 of third class have been determined, by means of multi-processing and analyses. In particular, the fault F6 in EW orientation and the fault F1 in SN orientation have been determined by detailed data processing and combining with crystalline basement deposition feature of the basin. The study shows that Junggar basin can be classified into such three first tectonic regions as Region Ⅰ (southern part), Region Ⅱ (middle part) and Region Ⅲ (northern part). The Region Ⅱ can be further divided into 4 sub-regions, forming a four-phase pattern. The each phase can be also divided into several further secondary geotectonic units. The structure, density and magnetic intensity are different in each phase, composing some differences in time and space.

Key words: Junggar basin, basement geotectonic pattern, gravity and magnetic inversion, multi-scale filtration, magnetic intensity

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