东营凹陷古近系Paleodictyon遗迹化石的发现及意义

新疆石油地质 ›› 2005, Vol. 26 ›› Issue (4): 404-407.

东营凹陷古近系Paleodictyon遗迹化石的发现及意义

王海方¹, 胡斌¹, 张关龙² , 陈世悦², 鄢继华²

1.河南理工大学,河南焦作454000;
2.中国石油大学 ,山东东营257061

收稿日期:2004-11-02 出版日期:2005-08-01 发布日期:2020-11-23
作者简介:王海方(1979-),女,河南新乡人,在读硕士研究生,古生物学,(Tel)0391-3983961
基金资助:
国家“十五”科技攻关项目,济阳坳陷下第三系沉积体系与油气运聚机理研究（2001BA605A09）资助

Discovery and Significance of Paleodictyon of Paleogene in Dongying Sag

WANG Hai-fang¹, HU Bin¹, ZHANG Guan-long², CHEN Shi-yue², YAN Ji-hua²

1. Henan Polytechnic University ，Jiaozuo, Henan 454000, China;
2. China University of Petroleum, Dongying, Shandong 257061, China

Received:2004-11-02 Online:2005-08-01 Published:2020-11-23

摘要/Abstract

摘要： 在东营凹陷纯梁地区古近系沙河街组中发现了Paleodictyon遗迹化石，其遗迹组构具有高丰度和低分异度的特征。观察发现，湖相Paleodictyon不仅比海相Paleodictyon的网孔长度和潜穴直径小得多，且网格形态趋于不规则化。通过对遗迹化石的遗迹组构分析，初步推测Paleodictyon形成于与浊流有关的深湖’半深湖环境，这一认识丰富了Paleodictyon遗迹化石的环境意义。

关键词: 东营凹陷, 古近系, 遗迹化石, 浊流沉积, 沉积环境

Abstract: The trace fossil Paleodictyon characterized by high abundance and low distinctness was discovered in Shahejie formation of Paleogene in Chunliang area of Dongying sag. Observation indicates that Paleodictyon in lacustrine environment has much smaller the string width and the mesh diameter than that in marine environment, and tends to being irregular in mesh pattem. The fabric analysis suggests that the Paleodictyon should be formned in deeplake -hemilake environment concerning with the turbidity current. This conclusion enriches and perfects the environmental significance of Paleodictyon.

Key words: Dongying sag, Paleogene, trace fossil, turbidite deposit, sedimentary environment

中图分类号:

王海方, 胡斌, 张关龙 , 陈世悦, 鄢继华. 东营凹陷古近系Paleodictyon遗迹化石的发现及意义[J]. 新疆石油地质, 2005, 26(4): 404-407.

WANG Hai-fang, HU Bin, ZHANG Guan-long, CHEN Shi-yue, YAN Ji-hua. Discovery and Significance of Paleodictyon of Paleogene in Dongying Sag[J]. Xinjiang Petroleum Geology, 2005, 26(4): 404-407.

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