石油学报 ›› 2000, Vol. 21 ›› Issue (5): 36-38.DOI: 10.7623/syxb200005008

• 地质勘探 • 上一篇    下一篇

宏观藻类化石在沉积相研究中的意义

崔攀峰, 李健, 胡海涛, 张永强   

  1. 长庆石油勘探开发研究院, 陕西西安710021
  • 收稿日期:1999-06-07 修回日期:1999-09-20 出版日期:2000-09-25 发布日期:2010-05-21
  • 作者简介:崔攀蜂,男,1950年2月生,1977年毕业于西南石油学院石油天然气地质专业.现为长庆油田勘探开发研究院工程师.通讯处:陕西省西安市兴隆园小区.

RESEARCH SIGNIFICANCE OF MACRO-ALGAE FOSSILS IN THE STUDY OF SEDIMENTARY FACIES IN ANSAI OILFIELD

CUI Pan-feng   

  1. Research Institute of Changqing Exploration and Development, Xi'an 710021, China
  • Received:1999-06-07 Revised:1999-09-20 Online:2000-09-25 Published:2010-05-21

摘要: 安塞油田长6油层发现了大量的淡水宏观藻类化石,证实了中生界宏观藻类的存在.淡水宏观藻类主要生长在山涧溪流与湖泊中,而前者水流急,不易保存,所以宏观藻类化石主要保存于水体相对平静的湖泊中.宏观藻类化石是可靠的淡水湖泊的生物标志和水下的代表性生物群落.安塞油田长6油层的宏观藻类化石主要有六个属种,可分为四个不同的类型,这四个类型不同的结构特点分别反映了水体的深浅与平静程度.同时也代表了四个不同的沉积区域,为沉积微相与产出组合的划分提供了直接的依据.

关键词: 宏观藻类, 生态环境, 沉积相, 安塞油田

Abstract: A large number of limnetic macro-algae fossils were found in the Change reservoir in Ansai Oilfield,which proved the existence of macro-algae in the Mesozoic.The limnetic macro-algae grow mainly in mountain streams,brooks and lakes.Because of a little bit rapid flowing in the streams or brooks,macro-algae fossils were not easily preserved. Therefore they were essentially preserved in lakes,where the water body is relatively calm.Macro-algae fossils are liable biological markers of freshwater lakes and typical underwater biocoen. Macro-algae fossils in the Change reservoir in Ansai Oilfield have mainly six genera that can be divided into four categories.Different structures of the four categories reflect different depth and degree of calmness of the water-body, and represent four sedimentary regions,which instructed the division of sedimentary micro-facies and the output combinations.

Key words: macro-algae, ecological environment, sedimentary facies, Ansai Oilfield

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