西南石油大学学报(自然科学版) ›› 2011, Vol. 33 ›› Issue (3): 79-82.

• 地质勘探 • 上一篇    下一篇

塔里木盆地西部康克林组层序地层学特征

刘辰生1,2 胡喜锋3 郭建华1, 2
  

  1. 1. 中南大学地球科学与信息物理学院,湖南长沙410083
    2. 中南大学有色金属成矿预测教育部重点实验室,湖南长沙410083
    3. 中国石油长庆油田公司勘探部,陕西西安710021
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2011-06-20 发布日期:2011-06-20

Sequence Features of Kangkelin Formation in Western Tarim Basin

LIU Cheng-sheng 1,2 HU Xi-feng 3 GUO Jian-hua 1,2
  

  1. 1. School of Geosciences and Info-physics, Central South University Changsha, Hunan 410083, China;
    2. MOE Key Laboratory of Nonferrous Metallogentic Prognosis, Central South University, Changsha, Hunan 410083, China;
    3. Exploration Department of Changing Oilfield Company, PetroChina, Xi’an, Shanxi 710021, China
  • Received:1900-01-01 Revised:1900-01-01 Online:2011-06-20 Published:2011-06-20

摘要:

通过野外露头、地球化学及古生物等资料的分析,可以确定康克林组底部为侵蚀不整合边界,对应三级层序中的Ⅰ型层序边界。康克林组可识别出3 个体系域,分别为低位体系域、海侵体系域和高位体系域。低位体系域主要分布在阿克苏地区,为侵蚀沟谷内的滨岸相沉积;海侵体系域主要为台地边缘浅滩相、生物礁以及局限台地相沉积;高位体系域主要为局限台地相和碎屑潮坪相沉积为主,但由于暴露剥蚀作用,该体系域发育不全。阿克苏地区厚层低位石英砂岩以及乌什县—巴楚县—霍什拉莆一线分布的海侵生物礁和台地边缘浅滩应是勘探目标区。

关键词: 康克林组, 层序边界, 石英砂岩, 生物礁, 勘探目标区

Abstract: Based on outcrop, geochemistry and paleontology data, it’s concluded that Kangkelin bottom is an eroding unconformity boundary, which corresponds to type Ⅰ sequence boundary of third order sequence. Three system tracts can be identified in Kangkelin Formation: lowstand system tract(LST), trangressive system tract(TST)and highstand system tract(HST). LST distributes mainly in Akesu area. LST is deposited by shore in incised channels.TST is deposited by shoal facies of platform margin, organic reef and restricted platform. HST is deposited mainly by

restricted platform and clastic tidal facies. Because of exposure and erosion, HST doesn’t present well in study area.Quartz sandstone developed in LST in Akesu area and organic reef and shoal facies of platform margin developedin TST are all favorable target for petroleum exploration.

Key words:

Kangkelin Formation, sequence boundary, quartz sandstone, organic reef, exploration target

中图分类号: