黔东南地区震旦系一寒武系的震积岩特征  

CHARACTERISTICS OF SINIAN-CAMBRIAN SEISMITES IN SOUTHEAST GUIZHOU PROVINCE

作　　者：杨光忠[1] 李吉春[1] 胡一忠 饶红娟[1] YANG Guang-zhong;LI Ji-chun;HU Yi-zhong;RAO Hong-juan(No.101 Geological Bridage,Bureau of Geology and Mineral Resources of Guizhou Province,Kaili 556000)

机构地区：[1]贵州省地矿局101地质大队,贵州凯里556000

出　　处：《地层学杂志》2018年第4期468-474,共7页Journal of Stratigraphy

基　　金：贵州省地矿局地质科学研究项目--施秉下翁哨地区镁铝榴石重砂异常及其矿物学研究初步成果.

摘　　要：黔东南地区震旦系—寒武系发育一系列震积岩,包括震积(滑塌)角砾岩、滑移褶皱、震积砂岩墙、震裂缝等,分析认为可能为区内深大断裂施洞口断层在加里东早期郁南运动期间发生一系列地震活动所致,或受郁南运动构造中心区构造活动的远程影响,使位处斜坡或台地边缘斜坡环境的沉积软泥及半成岩建造受震动影响就地破坏或移位改造再沉积的结果。本研究丰富了黔东南地区地层学及其岩相古地理和地质演化认识。There are a series of Upper Sinian to Lower Cambrian seismites in southeast Guizhou Province. These include seismic （slumps） breccias, slip folds, seismic sand walls, and seismic fissures. Our study shows that the Shidongkou fault may be caused by a series of seismicity during the early Caledonian Yunan movement or affected by the long-range influence of tectonic activities in the central area of the Yunan movement. Sedi- mentary mudstones in a slope or platform margin were destroyed or re-deposited due to seismicity. This study has implications for the stratigraphy, lithofacies palaeogeography, and geological evolution in southeast Guizhou Province.

关 键 词：岩石地层 震积岩 砂岩墙 震裂缝 角砾岩 滑塌滑移褶皱 震旦系统 寒武系 黔东南 

分 类 号：P534.31[天文地球—古生物学与地层学] P534.41[天文地球—地质学]