渤海湾盆地东营凹陷古近纪Paleodictyon遗迹化石的发现及其意义  

DISCOVERY AND SIGNIFICANCE OF PALEOGENE ICHNOFOSSIL Paleodictyon IN THE DONGYING SAG,BOHAI BAY BASIN

作　　者：袁文芳[1] 陈世悦[2] 曾昌民[1] 胡斌[3] 

机构地区：[1]中国石油天然气股份有限公司塔里木油田分公司勘探开发研究院,新疆库尔勒841000 [2]中国石油大学地球资源与信息学院,山东东营257061 [3]河南理工大学资源与环境学院,河南焦作454100

出　　处：《地质科学》2007年第4期779-786,共8页Chinese Journal of Geology(Scientia Geologica Sinica)

基　　金：国家科技攻关项目(2003BA613A-02)资助

摘　　要：在东营凹陷古近纪沙河街组四段浊流沉积中,发现遗迹化石Paleodictyon的两个遗迹种,即Paleodictyon regulare和Paleodictyon majus;对其围岩地球化学特征的研究则发现有指示海侵发生的甲藻甾烷分子化石发育,据此推测研究区古近纪的沉积与海水相关。The ichonofossil Paleodictyon was discoveved in the Paleogene turbiditic deposits in the Dongying Sag, including two ichnospecies, namely, the Paleodictyon regular and Paleodictyon majus. The study on geochemical behavior of the wall rocks revealed that the dinosterane, a sign of marine transgression, was checked out. The both meant that Paleogene sedimentation in the Dongying Sag might be once affected by seawater.

关 键 词：遗迹化石Paleodictyon 分子化石 古近纪 东营凹陷 

分 类 号：Q911.28[天文地球—古生物学与地层学]