新疆石油地质

新疆石油地质 ›› 2010, Vol. 31 ›› Issue (4): 365-368.

• 油气勘探 • 上一篇    下一篇

塔里木盆地西克尔地区中奥陶统鹰山组生物礁沉积特征

周刚1, 郑荣才1, 罗平2, 刘伟2, 宋金民2   

  1. 1.成都理工大学 油气藏地质及开发工程国家重点实验室,成都 610059;
    2.中国石油 勘探开发研究院,北京 100083
  • 收稿日期:2009-12-29 修回日期:2009-12-29 发布日期:2020-10-19
  • 作者简介:周刚(1984-),男,四川内江人,在读博士研究生,石油地质,(Tel)15882057819(E-mail)27252789@qq.com.

Sedimentary Characteristics of Yingshan Reefs of Middle Ordovician in Xike'er Area, Tarim Basin

ZHOU Gang1, ZHENG Rong-CAI1, LUO Ping2, LIU Wei2, SONG Jin-min2   

  1. 1. State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, CHENgdu University of Technology, CHENgdu 610059, China;
    2. Research Institute of Petroleum Exploration and Development, Beijing 100083, China
  • Received:2009-12-29 Revised:2009-12-29 Published:2020-10-19

PDF

525

摘要： 在塔里木盆地中奥陶统鹰山组上段中发现生物礁(丘),造礁生物主要为Calathium,其次为钙藻、苔藓虫、海绵等。生物礁发育于开阔台地内隆起部位,属于台内点礁,形成于海退的大背景下,但未见暴露痕迹。礁体无礁前、礁后和礁翼之分,但自下而上可划分出礁基、礁核和礁盖3 个亚相,礁基以棘屑灰岩为主,礁核以Calathium 障积岩、藻-托盘粘结障积岩、缝洞及沟道充填物为主,礁盖以亮晶砂屑灰岩为主。生物礁演化经历了5 个阶段,发育2 个生态群落。

关键词: 塔里木盆地, 鹰山组, 生物礁, 沉积特征

Abstract: The reefs (bioherm) or baffle reefs were discovered in upper Yingshan formation of the Middle Ordovician. The reef-building organism composes of Calathium, calcium algae, bryozoan, sponge, etc., dominated by Calathium. The reefs occur on the uplift of open platform, and were formed in regressive background without exposure signs and the division of reef front, reef behind and reef flank, but can be divided into reef base, reef core and reef cover. Reef base is dominated by echinoderm grainstone; reef core by Calathium bafflestone, algae-Calathium bafflestone, fractures, hole-groove filled substance, and reef cover by sparite calcarenite. The reefs undergo five stages of evolutions and develop two ecological communities.

Key words: Tarim basin, Yingshan formation, reef, sedimentary feature

中图分类号: