吉林大学学报(地球科学版) ›› 2018, Vol. 48 ›› Issue (5): 1522-1531.doi: 10.13278/j.cnki.jjuese.20170129

• 地球探测与信息技术 • 上一篇    

伊通盆地横头山火山机构综合地球物理探测

王坤1,2, 曾昭发1,2, 张良怀3, 李静1,2, 鹿琪1,2, 张建民1,2   

  1. 1. 吉林大学地球探测科学与技术学院, 长春 130026;
    2. 国土资源部应用地球物理重点实验室, 长春 130026;
    3. 吉林省地震局, 长春 130022
  • 收稿日期:2018-01-08 发布日期:2018-11-20
  • 通讯作者: 曾昭发(1966-),男,教授,博士生导师,主要从事地球物理方法理论与应用研究,E-mail:zengzf@jlu.edu.cn E-mail:zengzf@jlu.edu.cn
  • 作者简介:王坤(1989-),男,博士研究生,主要从事近地表资源与环境、地热地球物理研究,E-mail:wangkun0823@mails.jlu.edu.cn
  • 基金资助:
    国家重点基础研究发展计划("973"计划)项目(2016YFC060110402);国家自然科学基金项目(41504083)

Integrated Geophysical Exploration of Volcanic Edifice of Hengtoushan Volcano, Yitong Basin

Wang Kun1,2, Zeng Zhaofa1,2, Zhang Lianghuai3, Li Jing1,2, Lu Qi1,2, Zhang Jianmin1,2   

  1. 1. College of GeoExploration Science and Technology, Jilin University, Changchun 130026, China;
    2. Key Laboratory of Applied Geophysics, Ministry of Land and Resources of PRC, Changchun 130026, China;
    3. Jilin Earthquake Administration, Changchun 130022, China
  • Received:2018-01-08 Published:2018-11-20
  • Supported by:
    Supported by National Key Research and Development Program of China (2016YFC060110402) and National Natural Science Foundation of China(41504083)

摘要: 火山隐伏机构的研究对火山演化、火山地热勘探与开发具有重要的意义。本文选取伊通盆地内的横头山火山开展研究,采用航磁、大地电磁测深、可控源音频大地电磁测深等多种地球物理方法探测火山隐伏机构,揭示了横头山火山的形成时间和深部动力学过程,以及隐伏岩体的空间形态和构造环境,确立了一套针对隐伏火山机构的地球物理探测体系。研究表明:横头山火山形成于第四纪早更新世晚期,在压扭应力作用下,玄武岩岩浆由深部沿马鞍山断裂挤出地表,现阶段岩浆通道已经闭合,一部分岩浆停留在通道中;横头山火山隐伏部分与围岩存在较大磁性差异,地表磁异常面积为2.6 km2,沿马鞍山断裂北东向不均匀分布,埋藏深度小于1 000 m。

关键词: 伊通火山群, 横头山火山, 火山机构, 综合地球物理勘探

Abstract: The Yitong basin is a Cenozoic fault basin in the northern part of the Tan-Lu fault zone. The development and evolution of the Yitong basin is accompanied by strong volcanic activity. The distribution of buried volcanic edifices is of great significance to the study of volcanic evolution, geothermal exploration, and development in Yitong basin. In this study, we took the Hengtoushan volcano in the Yitong volcanic group as the research object, and used aeromagnetic measurements to determine the plane range of the buried volcanic edifice. The magnetic anomaly of the Hengtoushan volcanic area ranges of 2.6 km2. Using an electromagnetic sounding (MT) section through the Hengtoushan volcanic area, we obtained the deep electrical structure, and analyzed the cause of the Hengtoushan volcano. The study shows that the volcanic strata formed in the first part of the Quaternary in Early Pleistocene, and under the action of torsional stress the basaltic magma crushed out of the surface along the Maanshan fault or stuck in the fault. Now, the magma channel is closed. Using the controllable source audio magneto telluric sounding method, the fine electrical structure near the Hengtoushan volcano was obtained to determine the shape and distribution range of the concealed magma capsule. Based on the above results, we obtained a clear understanding of the formation time, deep dynamic process, the spatial morphology, and the tectonic environment of the Hengtoushan volcano. We established a geophysical imaging mechanism for a buried volcanic edifice, which provides a reference for the development of volcanic geothermal systems in the Yitong basin.

Key words: Yitong volcanoes, Hengtoushan volcano, volcanic edifice, geophysical prospecting

中图分类号: 

  • P631
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