黄岛地区北西向断裂特征及构造物理模拟实验  

Characteristics and Structural Physical Simulation Experiment of the NW Strike Faults in Huangdao Area

作　　者：孙肖 胡秋媛 杨建磊 李萧 魏真真 马遵青 徐成龙 SUN Xiao;HU Qiu-yuan;YANG Jian-lei;LI Xiao;WEI Zhen-zhen;MA Zun-qing;XU Cheng-long(Department of Oil & Gas Engineering,Shengli Institute of China University of Petroleum(East China),Dongying 257000,China;Northwest Institute of Eco-environment and Resources,Chinese Academy of Sciences,Lanzhou 730000,China;University of Chinese Academy of Sciences,Beijing 100049,China;College of Marine Ecology and Environment,Shanghai Ocean University,Shanghai 201306,China)

机构地区：[1]中国石油大学(华东)胜利学院油气工程学院,东营257000 [2]中国科学院西北生态环境资源研究院,兰州730000 [3]中国科学院大学,北京100049 [4]上海海洋大学海洋生态与环境学院,上海201306

出　　处：《科学技术与工程》2019年第13期25-32,共8页Science Technology and Engineering

基　　金：国家自然科学基金(40772132);中国石油大学胜利学院春晖计划(KY2018007);中国石油大学胜利学院科研计划重点项目(KY2017010)资助

摘　　要：选取黄岛地区北西向断裂为研究对象,通过区域野外地质踏勘系统研究了区内北西向断裂特征,并对典型断裂建立了地质模型。在此基础上,基于相似性原理,首次在研究区运用构造物理模拟实验方法对晚侏罗世-早始新世北西向断裂的发育演化进行反演恢复,取得了与实际地质情况较高的吻合度,为其形成机制研究提供了有力的实际变形支持。构造物理模拟结果显示,黄岛地区北西向断裂的发育演化经历了晚侏罗世-早白垩世早期、早白垩世中晚期-晚白垩世和古新世-早始新世3个阶段,构造应力场强度经历了较强—强—弱的演化过程。其中,早白垩世中晚期-晚白垩世是研究区大规模北东-南西向伸展的时期,北西向断裂多形成于此阶段。形成机制上,黄岛地区北西向断裂与晚侏罗世以来中国东部构造应力场的发展演化存在密切的成生关系,其动力来源主要受控于太平洋板块俯冲及郯庐断裂带、沧东-兰聊断裂带的走滑活动等关键因素。NW strike faults in Huangdao Area were examined and geological models were established using field geological survey data.Based on the similarity principle,the structural physical simulation experiment was adopted to carry out the developmental evolution of the study area from Late Jurassic to Early Eocene,which fit well with the actual geological conditions.The results indicate that the developmental evolution of NW strike faults in Huangdao area has experienced three stages: Late Jurassic-Early Cretaceous,Middle-Late of Early cretaceous-Late Cretaceous and Paleocene-Early Eocene.They also indicate that the tectonic stress field has evolved a strong-strong-weak evolutionary process.Middle-Late of Early Cretaceous-Late Cretaceous is a period of large-scale NE-SW extension in study area,during which most NW strike faults were formed.Mechanically,the NW strike faults in Huangdao Area are closely related to the development of tectonic stress field in eastern China since Late Jurassic.The essential factors leading to the tectonic evolution are the changes of the Pacific Plate subduction and the strike slipping motion along the major boundary fractures.

关 键 词：黄岛地区 北西向断裂 物理模拟实验 形成机制 

分 类 号：P542[天文地球—构造地质学]