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
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
Wang Kun1,2, Zeng Zhaofa1,2, Zhang Lianghuai3, Li Jing1,2, Lu Qi1,2, Zhang Jianmin1,2
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。
中图分类号:
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