新疆石油地质

新疆石油地质 ›› 2008, Vol. 29 ›› Issue (4): 439-444.

• 油气勘探 • 上一篇    下一篇

准噶尔盆地基底结构的地震转换波探测(为庆祝新疆油田勘探开发研究院成立50周年而作)

邵学钟1, 张家茹1, 范会吉1, Ю.Ромахов2, Ф.Кайдаш2   

  1. 1.中国地震局地质研究所, 北京100029;
    2.哈萨克斯坦共和国“潜力”物探公司, 阿拉木图
  • 收稿日期:2007-12-07 发布日期:2020-10-09
  • 作者简介:邵学钟(1934-), 男, 浙江慈溪人, 研究员, 博士, 石油地质,(Tel)010-62009247(E-mail)xuezhongshao@sina.com.

The Basement Structure in Junggar Basin: Deep-Sounding by Converted Waves of Earthquakes

SHAO Xue-zhong1, ZHANG Jia-ru1, FAN Hui-ji1, U. Romahov2, F. Kaydash2   

  1. 1. Institute of Geology, CEA, Beijing 100029, China;
    2. "Potential" Geophysical Company, Republic of Kazakhstan, Alma-Ata
  • Received:2007-12-07 Published:2020-10-09

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摘要： 为研究准噶尔盆地的基底和地壳结构, 在盆地内完成了4条地震转换波测深剖面, 总长为1600km. 结果表明, 准噶尔盆地地壳具有陆壳性质, 基底为双层结构, 上层为海西运动期褶皱基底, 下层为前寒武系结晶基底, 褶皱基底厚度不超过10km, 在三个泉凸起以北厚度较大, 为3~10km, 在此凸起以南, 厚度只有0~4km. 结晶基底顶面的埋深为5~16km. 地壳厚度为44~52km, 平均为47~48km. 盆地内存在一系列基底断裂和深部超壳断裂, 它们对盆地内油气分布有重要控制作用。

关键词: 准噶尔盆地, 基底结构, 地壳结构, 天然地震转换波测深, 地壳深部断裂

Abstract: To study the deep structures of basement and crust in Junggar basin, 4seismic profiles from deep-sounding by converted waves of earthquakes have been done with total length of 1600km. The results of investigation show that the crust in Junggar basin features continental character, and the basement of the basin is characterized by two-layer structure, the upper layer is Hercynian folded basement, and the lower is Pre-Cambrian crystalline basement. The total thickness of Hercynian forded basement is less than 10km, to the north of Sangequan swell its thickness is about 3~10km, to the south of it its thickness is only about 0~4km. The depth of the top of Pre-Cambrian crystalline basement is about 5~16km. The total thickness of the crust in the basin changes in range of 44~52km, averages 47~48km. A series of deep fractures have been detected in the basement and the crust in the basin, which are significant in the control of the distribution of oil and gas resources.

Key words: Junggar basin, basement structure, crust structure, deep-sounding by converted waves of earthquakes, deep fracture

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