辽河断陷滩海区海月潜山带地层关系与时代探讨  

Stratigraphic relationship and age of Haiyue buried hill belt in the beach area of Liaohe rifting basin

作　　者：刘乃震 朱世和 赵会民 赵彬 刘雪松[3] 赵佳[4] 赵铁辉[4] 

机构地区：[1]中国石油长城钻探工程公司,北京100010 [2]总参通信训练基地,河北张家口075100 [3]吉林大学地质博物馆,吉林长春130026 [4]辽宁省第九地质大队,辽宁铁岭112000

出　　处：《中国地质》2011年第3期553-559,共7页Geology in China

基　　金：国家重点基础研究发展规划(973)项目(2009CB21930X)资助

摘　　要：针对海月潜山带一套碳酸盐岩及碎屑岩的潜山地层,本文通过区域地层对比,结合主频分析,从岩性组合特征、层序结构、化石等方面综合研究,依据该套地层以白云质碳酸盐岩为主、藻类结构发育、变质石英砂岩成岩作用强、火山岩呈夹层产出等特征,明确潜山地层时代和探井相对关系,首次确定海月潜山带潜山地层为中元古界长城系大洪峪组至高于庄组。这一成果改变了以往将该套地层划为古生界奥陶系至石炭系的认识,为重建研究区潜山地层序列、明确该套潜山地层属有利勘探层系提供了宝贵的依据。This paper has studied lithologic combination,sequence structure and fossil specimens of carbonate and clastic buried hill strata of Haiyue buried hill belt.Based on regional stratigraphic correlation and analysis of frequency spectra,the authors determined ages of buried hills and relative locations of several drilling wells of the buried hill.The main kinds of carbonate rocks of the buried hill strata are composed of multiple types of dolomite,megascopic algae are developed extensively,diagenetic metamorphism of metamorphic quartz sand is intense,and volcanic rock occurs as thin-bedded strata.It is for the first time that the characteristics reveal that carbonate and clastic buried hill strata of Haiyue buried hill belt belong to Mesoprotozoic Dahongyu-Gaoyuzhuang Formation.This discovery has changed the traditional understanding of the past many years that the buried hill in this area totally belongs to Ordovician and Carboniferous,provided valuable evidence for reestablishing stratigraphic sequence of the buried hill in this area,and demonstrated that the buried hill is a favorable place for oil-prospecting.

关 键 词：中元古界 区域地层对比 主频分析 海月潜山带 辽河断陷滩海区 

分 类 号：P618.13[天文地球—矿床学]