新疆石油地质

新疆石油地质 ›› 2002, Vol. 23 ›› Issue (6): 474-477.

• 油气勘探 • 上一篇    下一篇

准噶尔盆地基底及其地震速度特征

陈俊湘, 陈景亮   

  1. 中国石油 新疆油田分公司 勘探开发研究院地球物理研究所,新疆 乌鲁木齐 830011
  • 收稿日期:2002-04-30 出版日期:2002-12-01 发布日期:2020-08-12
  • 作者简介:陈俊湘（1945-),男,四川成都人,高级工程师,地质综合研究及地震地质解释。联系电话:0991-5299253

Basement of Junggar Basin and Its Seismic Velocity Characteristics

CHEN Jun-xiang, CHEN Jing-liang   

  • Received:2002-04-30 Online:2002-12-01 Published:2020-08-12
  • About author:CHEN Jun-xiang (1945-), Male, Senior Engineer, Geophysics Prospecting, Geophysical Research Department, Research Institute of Exploration and Development, PetroChina Xinjiang Oil, Urumqi, Xinjiang 830011, China

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摘要： 通过对新疆塔里木盆地、准噶尔盆地地震转换波地震速度的统计和地质分析,并与云南扬子地台、宁夏—内蒙古的鄂尔多斯地台、华北地台的地震纵波速度特征对比后认为,准噶尔盆地缺失硅铝层,浅变质的下古生界“褶皱基底”直接覆盖于硅铝镁层之上,缺失深变质岩系即“结晶基底”。塔里木盆地、云南扬子地台、宁夏—内蒙的鄂尔多斯地台、华北地台具有相似的壳幔速度特征。这一研究成果为研究准噶尔盆地、塔里木盆地的基底结构及演化提供了新的看法。

关键词: 准噶尔盆地, 基底, 特征, 速度, 转换波, 纵波速度

Abstract: This paper makes statistics and analysis of seismic velocity in seismic transformed wave in Junggar basin and Tarim basin, and comparison of these with compressional wave velocity features from Yangzi platform (Yun-nan province), Erdos platform (Ningxia-Inner Mongolia) and Huabei platform (North China). It is considered that in Junggar basin sialic layer is absent, and epimetamorphic Yolded basement”of Lower Paleozoic directly overlapped on sialma, without hypometamorphic rock formation (i.e, “Crystalline basement”). However, Tarim basin, Yangzi platform, Erdos platform and Huabei platform are all characterized by similar crust-mantle velocity.

Key words: Junggar basin, basement, characteristics, transformed wave, compressional wave velocity

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