山东金岭地区古生代地层节理特征分析  

Characteristics of Paleozoic Stratigraphic Joints in Jinling Area, Shandong Province

作　　者：季玮 张超[2] JI Wei;ZHANG Chao(College of Geosciences,Chengdu University of Technology,Chengdu 610059,China;School of Resources and Environmental Engineering,Shandong University of Technology,Zibo 255049,China)

机构地区：[1]成都理工大学地球科学学院,四川成都610059 [2]山东理工大学资源与环境工程学院,山东淄博255049

出　　处：《四川有色金属》2019年第3期24-26,共3页Sichuan Nonferrous Metals

摘　　要：山东淄博金岭地区位于鲁西地块东南部,区内出露有古生代中奥陶纪马家沟群灰岩,其中大量发育张节理以及共轭剪节理,根据节理分期配套原则可划分出两大类共六组实测节理。对每组实测节理分别运用“层位校正技术”,即可获得六组原始节理,进一步分析原始节理的构造特征表明:金岭地区曾受到南北向、北北西向、东西向挤压。基于上述研究结合鲁西区域应力场演化可知:金岭地区自晚古生代以来确受到加里东期、海西期、印支期南北挤压运动的影响,且燕山期太平洋板块北北西向挤压也在区域内有所体现,最终于喜山期转化为东西向挤压。Jinling area,Zibo,Shandong Province,is located in the southeast of the western Shandong Block.Limestones of the Paleozoic Middle Ordovician Majiagou Group are exposed in the area.Tensile joints and conjugate shear joints are abundantly developed.According to the principle of joint stage matching,two types of measured joints can be divided into six groups.Six sets of original joints can be obtained by using"horizon correction technique"for each group of measured joints.Further analysis of the structural characteristics of the original joints shows that the Jinling area has been subjected to north-south,north-north-west and east-west compression.Based on the above research and the evolution of regional stress field in Western Shandong,it can be concluded that the Jinling area has indeed been affected by the Caledonian,Hercynian and Indosinian northsouth compression movement since the Late Paleozoic,and the NNW compression of the Pacific Plate in Yanshanian is also reflected in the region,and finally transformed into the EW compression in the Himalayan period.

关 键 词：鲁西地块东南部 节理应力分析 古生代奥陶纪马家沟群 构造演化 

分 类 号：P618[天文地球—矿床学]