地学前缘 ›› 2009, Vol. 16 ›› Issue (2): 314-323.

• 论文 • 上一篇    下一篇

松科1井南孔白垩系青山口组一段沉积序列精细描述:岩石地层、沉积相与旋回地层

  

  1. 1吉林大学 地球科学学院, 吉林 长春 130061
    2中国地质大学(北京) 地球科学与资源学院, 北京 100083
    3大庆油田有限责任公司 勘探开发研究院, 黑龙江 大庆 163712
    4大庆油田有限责任公司 地质录井分公司, 黑龙江 大庆 163411

  • 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
  • 通讯作者: 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
  • 作者简介:高有峰(1982—),男,博士研究生,主要从事油气地质勘查方面的研究。E-mail:gaoyf_1982@163.com
  • 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 first 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School of Earth Sciences and Resources, China University of Geosciences(Beijing), Beijing 100083, China
    3Institute of Exploration and Development of Daqing Oilfield Company Ltd, Daqing 163712, China
    4Geological Logging Branch of Daqing Oilfield Company Ltd, Daqing 163411, 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一段岩心8141 m,收获率为100％。青一段沉积时期应与土仑阶对应。通过对松科1井南孔青一段岩心的精细描述,揭示其岩性岩相旋回的沉积序列及其过程。青一段识别出6种岩石类型(泥岩、白云岩、泥灰岩、重结晶灰岩、介形虫灰岩和火山灰)。相类型为深湖亚相以及白云岩沉积、泥灰岩沉积、灰岩沉积、深湖浊流沉积、火山灰沉积和深湖静水泥沉积共6种沉积微相。青一段中可识别的米级旋回(六级旋回)有4种类型,可划分出81个米级旋回。这些米级旋回叠加成25个五级旋回、6个四级旋回,识别出1个三级旋回界面。对青山口组一段暗色泥岩、白云岩、火山灰等特殊事件层的精细刻画对于松辽盆地的缺氧事件、烃源岩、湖海沟通事件研究具有重要意义。

关键词: 青山口组一段;沉积相;沉积序列;旋回地层;松科1井南孔;白垩纪土仑阶;松辽盆地

Abstract:

The first member of the Qingshankou Formation recovered by CCSDSKⅠs borehole (China Cretaceous Continental Scientific DrillingSongkeⅠthe south borehole) is 8141 m long and 100% of cores recovery. The age of the member corresponds approximately to the Turonian. The sequence and process of lithologylithofacies and cyclic stratigraphy were revealed by a detailed core description. Six rock types（mudstone, dolostone, marl, limestone, ostracode limestone and volcanic ash）comprise the sedimentary strata. Deposition occurred in a deep lake, including six sedimentary microfacies: dolostone, marl, limestone, deep lake turbidite,  deep lake mudstone  and volcanic ash microfacies. The first member of the Qingshankou Formation represents eightyone meterscale cycles (sixthorder cycle), twentyfive fifthorder cycles, six fourthorder cycles and two thirdorder cycles. The occurrence and detailed description of mudstone, dolostone and volcanic ash are of significance for the study of anoxic events, source rock development and the potential linkage between lakemarine depositional events.

Key words:

first member of Qingshankou Formation; sedimentary facies; sedimentary sequence; cyclic stratigraphy; CCSDSKⅠs; Cretaceous Turonian; Songliao Basin

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