新疆石油地质

新疆石油地质 ›› 1994, Vol. 15 ›› Issue (3): 214-219.

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准噶尔盆地火山岩地震相及分布特征

姚新玉, 何正怀, 吴建华   

  1. 第一作者:助理工程师 地球物理勘探 新疆石油管理局勘探开发研究院 克拉玛依 834000
  • 收稿日期:1994-01-07 出版日期:1994-09-01 发布日期:2020-07-22

SEISMIC FACIES AND DISTRIBUTION CHARACTERISTICS OF VOLCANIC ROCKS IN JUNGGAR BASIN

Yao Xinyu, He Zhenghuai, Wu Jianhua   

  1. First Author:Assistant Bagincer, Geophysical Prospecting, Research Inustitue of Exploration and Development, Xinjiang Petroleum Administratson Burea, Karamay 834000
  • Received:1994-01-07 Online:1994-09-01 Published:2020-07-22

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摘要： 结合准噶尔盆地的探井资料，将盆地火山岩的地震反射特征分为三类（反射良好、反射中等、无反射），它们在地质时代上有大致的对应关系。根据反射特征和火山作用的规律，指出石南１井处于火山口附近，火山的侧向喷发形式保存了较完整的火山锥形态，石南凹陷有较多的大山岩分布，上覆层以上二叠统乌尔禾组和中上三叠统为主；准噶尔盆地海西褶皱基底存在大量的中基性喷发岩和侵入岩，沉积岩的反射一般在一个小范围内存在，是基底内部相对平稳地段的泥盆－石炭系的地震响应。

关键词: 准呜尔盆地, 火山岩, 地震反射特征, 地震响应, 火山锥, 基底

Abstract: Seismic reflection characteristics of volcanic rocks in Junggar basin are divided into three categories (strong，wcak , no) based on exploratory well data, which correlate with their geologic ages approximately. Considering reflcction characteristics and patterns of volcanic events, it is suggested that Well Shinan I is located in the vicinity of crater，lateral volcanic eruptions result in completeness of volcanic cone shapes, and volcanic rocks are present in large number within Shinan Depressian, which is overlain by Upper Permian Wuerhe Formation and Middle-Upper Triasic. Within basement of Hercynian folding zone in Junggar basin, intermediate-basic effusive rocks and intrusive rocks are abundantly distributed，seismic reflection of sedimentary rocks commonly exists in a smal area，which is seismic tesponse of the Devonian-Carboniferous in relatively stable section of the basemen.

Key words: Junggar basin, Volcanic rock, Sismic reflection characteristics, Seismic response, Volcanic cone, Basement