湖山地区三叠系剩磁特征及其构造地质意义  

Characteristic remanent magnetization, rock magnetization of triassic systemin ningzhen area, Nanjing and its tectionic implication

作　　者：邹乐君[1] 沈晓华[1] 沈忠悦[1] 朱建丽[1] 

机构地区：[1]浙江大学地球科学系,浙江杭州310027

出　　处：《浙江大学学报（工学版）》2001年第4期447-451,共5页Journal of Zhejiang University：Engineering Science

基　　金：国家自然科学基金资助项目 (495 742 16 )

摘　　要：通过岩石磁学、磁清洗和剩磁组分分离 ,结合野外地质实际 ,对宁镇山脉湖山地区早中三叠世青龙群、晚三叠世黄马青组岩石作了剩磁分析与剩磁年代的讨论 ,在青龙群中确定了三组磁组分 ,分别对应于特征剩磁、印支期和燕山期重磁化组分。Rock magnetism, magnetic cleaning and remanence isolation were performed on the samples from Triassic Qinglong Group and Huangmaqing Formation in Ningzhen area. Three magnetic components of Qinglong limestone were identified, they are characteristic remnant magnetization, remagnetizations of Indosinian and Yanshanian. Combined with geological evidence and the paleomagnetic results, we discussed the tectonic evolution of lower Yangtze Block since Later Paleozoic.

关 键 词：湖山地区 古地磁 三叠纪 构造演化 

分 类 号：P318.4[天文地球—固体地球物理学] P542.3[天文地球—地球物理学]