本文将参加年度优秀论文评选,如果您觉得这篇文章很好,请投下您宝贵的一票,谢谢! 支持(0)   不支持(0)

鲁中寒武系馒头组震积岩的发现及初步研究
    点此下载全文
引用本文:田洪水,万中杰,王华林.2003.鲁中寒武系馒头组震积岩的发现及初步研究[J].地质论评,49(2):123-131,[DOI]:.
.2003.Discovery and Preliminary Study on Seismites of the Cambrian Mantou Formation in the Central Shandong Area[J].Geological Review,49(2):123-131.
DOI:
摘要点击次数: 1452
全文下载次数: 838
田洪水  万中杰  王华林
[1]山东建筑工程学院,济南250013 [2]山东第四地质矿产勘查院,潍坊261021 [3]山东省地震局,济南,250014
基金项目:山东省地质矿产局1:5万埠村幅区调项目(鲁地审发[1993]9号),1:5万青驼幅与半程幅区调项目(鲁地勘字[2000]34号)
中文摘要:近几年在鲁中不同地区发现馒头组石店段中均有震积岩产出。震积岩形成于干燥的潮坪泻湖环境,发育在下寒武统的上部。它们具有记录强地震事件的泄水构造(地震成因泥晶脉)、液化卷曲变形、阶梯状小断裂、层内错断和液化网状裂纹等层内构造的特征。本文通过地层综合对比,论证了不同地区震积岩的等时性。认为:鲁中早寒武世末有一个地震活跃期;地震序列属乔秀夫(1994,2001a)提出的碳酸盐岩振动液化地震序列的原地系统;震积岩分布范围是约在510Ma前,以古郯庐带为震中的强地震之7-11度烈度区。为区别于张增奇(1996)提出的鲁中新元古代石旺庄期地震事件层,将此地震成因地层名之为馒头期地震事件层。
中文关键词:寒武系 馒头组 震积岩 地震事件层 山东 地震序列
 
Discovery and Preliminary Study on Seismites of the Cambrian Mantou Formation in the Central Shandong Area
TIAN Hongshui,WAN Zhongjie,WANG Hualin 1) Shandong Institute of Architecture and Engineering,Jinan,2500132) No. 4 Institute of Geology and Mineral Resources Exploration,Shandong,Weifang,261021 3) Seismological Bureau of Shandong,Jinan,250014
Abstract:Seismites of the Shidian Member of the Cambrian Mantou Formation have been found in different areas of the central Shandong Province in recent years. They were formed in a dry tidal flat lagoon environment, and developed in the upper part of the Lower Cambrian. They have the characteristics of intra-layer structures recording strong seismic events, such as the escaped structure of water (seismogenic micrite vein) , liquefied fold deformation, micro-fault-graded and net-like cracks etc. Through a comprehensive correlation of the strata, the isochroneity of seiemites in different areas is proved in the paper. It is considered that there was a seismic active period at the end of the Early Cambrian in the central Shandong area. The seismic sequence belongs to the original position system of the vibrational liquefaction seismic sequence in carbonate rocks put forward by Qiao Xiufu(1994, 2001a), and the distribution of the seismites was in a region of earthquake intensity of 7-11 degree caused by some strong palaeo-earthquakes about 510 Ma ago, with the palaeo-Tancheng-Lujiang fault zone as the seismic center. In order to be distinguished from the seismic event bed of the Neoproterozoic Shiwangzhuang Period in the central Shandong area, this earthquake-genetic stratum is temporarily named the seismic event bed of the Mantou Period.
keywords:seismite,seismic event bed of the Mantou Period,Cambrian,central Shandong,
查看全文  查看/发表评论  下载PDF阅读器
WeChat
s