古地理学报 ›› 2014, Vol. 16 ›› Issue (5): 631-640. doi: 10.7605/gdlxb.2014.05.51

• 古地理学及矿产资源 • 上一篇    下一篇

内蒙古海拉尔盆地早白垩世含煤岩系层序地层与聚煤规律

郭 彪1, 邵龙义1, 张 强2, 马施民1, 王东东3, 周倩羽1   

  1. 1 中国矿业大学(北京)地球科学与测绘工程学院,北京 100083
    2 内蒙古自治区煤田地质局煤炭地质调查院,内蒙古呼和浩特 010010
    3 山东科技大学地质科学与工程学院,山东青岛 266590
  • 收稿日期:2014-05-23 修回日期:2014-11-20 出版日期:2014-10-01 发布日期:2014-10-01
  • 通讯作者: 邵龙义,男,1964年生,博士生导师,主要从事煤沉积学和层序地层学研究。E-mail:shaol@cumtb.edu.cn。
  • 作者简介:郭彪,男,1985年生,博士研究生,主要从事煤沉积学和层序地层学研究。E-mail:guobiao511@163.com。
  • 基金资助:
    国家科技重大专项(编号:2011ZX05033-002)资助

Sequence stratigraphy and coal accumulation pattern of the Early Cretaceous coal measures in Hailar Basin, Inner Mongolia

Guo Biao1, Shao Longyi1, Zhang Qiang2, Ma Shimin1, Wang Dongdong3, Zhou Qianyu1   

  1. 1.College of Geoscience and Surveying Engineering,China University of Mining and Technology(Beijing),Beijing.100083
    2 Coal Geology Survey Institute of Inner Mongolia Autonomous Region Coalfield Geological Survey,Hohhot.010010,Inner Mongolia
    3.College of Geological Science and Engineering,Shandong University of Science and Technology,Qingdao.266590,Shandong
  • Received:2014-05-23 Revised:2014-11-20 Online:2014-10-01 Published:2014-10-01
  • Contact: Shao Longyi,born in 1964,a professor of China University of Mining and Technology(Beijing),is mainly engaged in coal sedimentology and sequence stratigraphy. E-mail: shaol@cumtb.edu.cn.
  • About author:Guo Biao,born in 1985,a Ph.D. candidate of China University of Mining and Technology(Beijing),is mainly engaged in coal sedimentology and sequence stratigraphy. E-mail:guobiao511@163.com.

摘要: 利用煤田钻孔资料,对内蒙古海拉尔盆地下白垩统含煤岩系层序地层格架及聚煤规律进行研究。根据区域不整合面、下切谷砂砾岩体底面、古生物组合突变面及沉积相转换面等层序界面,将海拉尔盆地下白垩统含煤岩系划分为6个三级层序。铜钵庙组是盆地初始断陷阶段的产物;南屯组一段、二段是盆地快速沉降阶段,大磨拐河组一段、二段是盆地稳定拉张阶段,伊敏组是断陷萎缩阶段。盆地早白垩世含煤地层的煤层发育表现为东、北部好,中部次之,西南部差的特点;聚煤作用主要发生在伊敏组及南屯组二段,这2个时期构造沉降表现出间歇性、震荡性及多旋回性,保证了可容空间增加速率与泥炭堆积速率之间的平衡关系,从而形成了区域性的厚煤层。

关键词: 海拉尔盆地, 下白垩统, 扎赉诺尔群, 层序地层, 聚煤规律

Abstract: Sequence stratigraphy and coal accumulation pattern of the Early Cretaceous coal measures in Hailar Basin have been studied using outcrop and borehole data in this paper. Based on the regional unconformity surface,the erosional base of incise valley filled by sandstone and conglomerates, the vertical facies reversal surface and paleontological discontinuous surface,6 third-order sequences were divided in Hailar Basin. Tongbomiao Formation was developed at the initial subsiding stage. Nantun Formation was developed during the rapid subsiding stage. Damoguaihe Formation was formed in the strong extension stage and Yimin Formation was developed during the basin shrinkage stage. The distribution of the Early Cretaceous coal measures showed best in the eastern and northern, middle part come secondly, and southwest worst. Coal accumulated in the Yimin Formation and the second member of Nantun Formation,where the tectonic subsidence was showing the characters of intermittence,concussion and multi-cyclicity,providing the balance between the increasing rate of accommodation space and the peat accumulating rate favored the accumulation of the regional thick coal seams.

Key words: Hailar Basin, Lower Cretaceous, Zhalainuoer Group, sequence stratigraphy, coal accumulation pattern

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