地学前缘 ›› 2009, Vol. 16 ›› Issue (2): 288-313.

• 论文 • 上一篇    下一篇

松科1井南孔白垩系青山口组二、三段沉积序列精细描述:岩石地层、沉积相与旋回地层

王璞珺 高有峰 程日辉 王国栋 吴河勇 万晓樵 杨甘生 汪忠兴   

  1. 1吉林大学 地球科学学院, 吉林 长春 130061
    2大庆油田有限责任公司 勘探开发研究院, 黑龙江 大庆 163712
    3中国地质大学(北京) 地球科学与资源学院, 北京 100083
    4中国地质大学(北京) 工程技术学院, 北京 100083
  • 收稿日期:2008-11-21 修回日期:2008-12-21 出版日期:2009-03-02 发布日期:2009-03-02
  • 作者简介:王璞珺(1959—),男,教授,博士生导师,主要从事油气地质勘查、沉积学与火山岩储层方面的研究与教学。E-mail:wangpj@jlu.edu.cn
  • 基金资助:

    国家重点基础研究发展计划“973”项目(2006CB701403)

Description of Cretaceous sedimentary sequence of the second and third member of the Qingshankou Formation recovered by CCSDSKⅠs borehole in Songliao Basin: Lithostratigraphy, sedimentary facies and cyclic stratigraphy.

  1. 1College of Earth Sciences, Jilin University, Changchun 130061, China
    2Institute of Exploration and Development of Daqing Oilfield Company Ltd, Daqing 163712, China
    3School of Earth Sciences and Resources, China University of Geosciences(Beijing), Beijing 100083, China
    4School of Engineering, China University of Geosciences(Beijing), Beijing 100083, China
  • Received:2008-11-21 Revised:2008-12-21 Online:2009-03-02 Published:2009-03-02

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摘要：

       中国白垩纪大陆科学钻探松科1井南孔连续取青山口组二、三段岩心长41561 m,岩心收获率为100％。青二、三段沉积时期应与康尼亚克阶对应。通过对松科1井南孔青二、三段岩心的精细描述,揭示其岩性岩相旋回的沉积序列及其过程。青二、三段识别出12种岩石类型。相类型为深湖亚相的白云岩沉积、泥灰岩沉积、灰岩沉积、油页岩沉积、半深湖浊流沉积、火山灰沉积、震积岩、半深湖静水泥沉积和浅湖亚相的浅湖静水泥质沉积、浅湖浊流沉积,共2种亚相10种微相。青二、三段中可识别的米级旋回(六级旋回)有6种类型,可划分出422个米级旋回,这些米级旋回叠加成130个五级旋回、21个四级旋回和1个三级旋回。对青二、三段暗色泥岩、震积岩、白云岩、火山灰等特殊事件层的精细刻画对于松辽盆地烃源岩和湖相事件沉积研究具有重要意义。

关键词: 青山口组二、三段;沉积相;沉积序列;旋回地层;松科1井南孔;白垩系康尼亚克阶;松辽盆地

Abstract:

The second and third member of the Qingshankou Formation recovered by CCSDSKⅠs borehole (China Cretaceous Continental Scientific DrillingSongkeⅠthe south borehole) is 41561 m long and 100% of cores recovery. The age of the member corresponds approximately to the Coniacian. The sequence and process of lithologylithofacies and cyclic stratigraphy were revealed by a detailed core description. Twelve rock types and two kinds of sedimentary subfacies including deep lake and shallow lake were recognized from the drilling core of the second and third member of the Qingshankou Formation. Ten sedimentary microfacies are present, including dolostone, marl, limestone, oil shale, deep lake turbidite, volcanic ash, seismite, deep lake mudstone, shallow lake mudstone and shallow lake turbidite microfacies. The second and third member of the Qingshankou Formation represents four hundred and twentytwo meterscale cycles (sixthorder cycle), one hundred and thirty fifthorder cycles, twentyone fourthorder cycles and one thirdorder cycles. The special lithologies such as mudstone, seismite, dolostone, volcanic ash and so on are important to researches on source rocks and lacustrine event sediments.

Key words: the second and third member of Qingshankou Formation; sedimentary facies; sedimentary sequence; cyclic stratigraphy; CCSDSKⅠs; Cretaceous Coniacian; Songliao Basin

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