石油与天然气地质 ›› 1995, Vol. 16 ›› Issue (3): 265-271.doi: 10.11743/ogg19950311

• 论文 • 上一篇    下一篇

塔中卡拉沙依组-小海子组层序地层与沉积相

郭建华, 刘生国, 肖传桃, 翟永红   

  1. 江汉石油学院, 湖北荆沙, 434102
  • 收稿日期:1995-03-31 出版日期:1995-09-25 发布日期:2012-01-16

SEQUENCE STRATIGRAPHY AND SEDIMENTARY FACIES OF KARASHAYI-XIAOHAIZI FORMATIONS, CENTRAL TARIM

Guojianhua, Liu Shengguo, Xiao Chuantao, Zhai Yonghong   

  1. Jianghan Petroleum institute, Jingsha, Hubei
  • Received:1995-03-31 Online:1995-09-25 Published:2012-01-16

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摘要：

通过层序地层学的划分与对比,将卡拉沙依组和小海子组划分出上下两个沉积层序,反映了海平面的二次升降旋回,而两个层序问的等时沉积界面即是卡拉沙依组和小海子组的分界面。卡拉沙依组主要由海岸平原相和扇三角洲相交互组成,小海子组由浅海陆棚相和扇三角洲相组成。两个层序中的扇三角洲相分别是海平面高位期及海平面快速上升时的沉积,具明显的陆架型湿型扇三角洲特征。

关键词: 层序地层, 扇三角洲相, 沉积相, 塔中地区, 卡拉沙依组-小海子组

Abstract:

In accordance with the division and correlation of sequence stratigraphy, the Karashayiand Xiaohaizi Formations can be classified into two sedimetary sequences which reflect twoeustatic changes of sea level. The isochronal deposit surface between two sequences is theboundary between Karashayi and Xiaohaizi Formations. Karashayi Formation consists alternately of coastal plain factes and fan-delta factes, whereas the Xiaohaizi Formation consistsmainly of shelf factes and fan-delta factes. However, the fan-deltas in the two sequences arerespectively deposited in high-stand rapidrise of sea level, and they both have wet fan-deltafeature.