石油学报 ›› 2005, Vol. 26 ›› Issue (2): 58-60,64.DOI: 10.7623/syxb200502012

• 地质勘探 • 上一篇    下一篇

辽宁南部石炭-二叠系界线处同位素分析

王大锐1, 许坤2,3, 吴炳伟3, 薛尚义3, 李玮3, 王永军2,4   

  1. 1. 中国石油勘探开发研究院, 北京, 100083;
    2. 中国石油天然气集团公司咨询中心, 北京, 100724;
    3. 中国石油辽河油田勘探开发研究院, 辽宁盘锦, 124010;
    4. 中国地质大学, 北京, 100083
  • 收稿日期:2004-03-01 修回日期:2004-06-28 出版日期:2005-03-25 发布日期:2010-05-21
  • 作者简介:王大锐,男,1955年10月生,1982年毕业于北京大学,1993年获北京大学理学博士学位,主要从事同位素地球化学与地层学等研究,现任《石油勘探与开发》副主编,高级工程师.E-mail:wdr@petrochina.com.cn
  • 基金资助:
    中国石油天然气股份有限公司重大科技发展项目"中国北方石炭二叠系地层划分对比、古环境研究及与油气远景评价".

Stable isotopic shift near boundary of the Carboniferous and Permian in the southern Liaoning Province of China

WANG Da-rui1, XU Kun2,3, WU Bing-wei3, XUE Shang-yi3, LI Wei3, WANG Yong-jun2,4   

  1. 1. Research Institute of Petroleum Exploration and Development, CNPC, Beijing 100083, China;
    2. Advisory Center, CNPC, Beijing 100724, China;
    3. Exploration and Development Research Institute of Liaohe Oilfield, CNPC, Panjin 124010, China;
    4. China university of Geosciences, Beijing 100083, China
  • Received:2004-03-01 Revised:2004-06-28 Online:2005-03-25 Published:2010-05-21

摘要: 辽宁南部大连金州湾剖面位于东北与华南、华北的交界区域,为海相海陆交互相沉积剖面,是我国北方为数不多的以海相沉积为主的剖面。在剖面第28层中发现的与华北地区早二叠世虫筳类化石相当的Sphaeroschwagerina-Rugos of usulina带附近发现了沉积碳酸盐岩内大幅度的碳同位素组成正向波动,可以进行大区域的石炭二叠系界线划分对比。该期氧同位素组成亦有大幅度正向波动,是石炭纪后期至二叠纪早期全球冰期的反映,有利于沉积有机质的保存和烃源岩的发育。

关键词: 辽宁南部地区, 石炭-二叠系, 金州湾剖面, 同位素组成

Abstract: The Jinzhou Bay Section located in Dalian of the southern Liaoning Province is near the boundary between north and south China plate with marine and continental-oceanic sediments.It is one of the main marine deposits in North China.The obvious carbon isotopic composition shift was discovered in the No.28 layer nearby the Sphaeroschwagerina-Rugos of usulina zone that is equivalent to the Fusulinida zone of the Early Permian in North China.The shift could be a tool for widely dividing and correlating the boundaries of the Carboniferous and Permian.Meanwhile,the oxygen isotopic shift discovered in the same episode suggests the glaciations existing during the Later Carboniferous and Early Permian,which would be favorable for preventing sedimentary organic matters and development of oil and gas source rocks at that time.

Key words: southern Liaoning Province, Carboniferous-Permian period, Jinzhou Bay section, isotopic composition

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