郯庐断裂带安徽泗县徐井段晚第四纪新活动的发现及其意义
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- 英文论文题名：DISCOVER AND SIGNIFICANCE OF LATE QUATERNARY NEW ACTIVITIES ON XUJING SEGMENT,TANCHENG-LUJIANG FAULT ZONE,ANHUI PROVINCE
- 论文作者：姚大全 ; 郑海刚 ; 赵朋 ; 杨源源 ; WANG Xingzhou ; SHU Peng ; LI Junhui
- 英文论文作者：YAO Da-quan ; ZHENG Hai-gang ; ZHAO Peng ; YANG Yuanyuan ; WANG Xingzhou ; SHU Peng ; LI Junhui ; Seismological Administration of Anhui Province
- 年：2016
- 作者机构：安徽省地震局;Seismological Administration of Anhui Province;
- 论文关键词：郯庐带 ; 徐井 ; 第四纪活动 ; 张裂楔 ; 崩积楔 ; 地震断层 ; 意义
- 英文论文关键词：Tancheng-Lujiang fault zone ; Xujing ; Quaternary new activities ; Tensile fracture wedge ; Colluvial wedge ; Seismic fault ; Significance
- 会议召开时间：2016-10-15
- 会议录名称：2016中国地球科学联合学术年会论文集（十六）——专题34：活动断层、地震结构与地震、专题35：新构造、地表过程与地质灾害机理
- 语种：中文
- 分类号：P315.2
- 学会代码：ZGDW
- 会议名称：2016中国地球科学联合学术年会
- 会议地点：中国北京
- 主办单位：中国地球物理学会、中国地震学会、全国岩石学与地球动力学研讨会组委会、中国地质学会构造地质学与地球动力学专业委员会、中国地质学会区域地质与成矿专业委员会
- 学会名称：中国地球物理学会
- 页数：3
- 文件大小：908k
- 原文格式：D
- 会议级别：全国
摘要
探槽揭示郯庐断裂带安徽泗县徐井一带第四纪以来的新活动,表现为张裂楔、崩积楔和地震断层。根据现场现象的综合分析,初步认为:断裂的张性活动发生在中更新世后,形成张裂楔,随后断裂发生高速挤压冲断,生成逆断型崩积楔,断裂的最新活动发生在上覆黑土沉积以后,表现为小幅度逆冲活动,造成断层两侧的黑土层厚度差异。最新活动延续到晚第四纪。虽然上述认识有待于年代样品测试和原态微观观测分析结果的证实,但对认识郯庐断裂第四纪新活动样式显然有着重要意义。
New activities since late Quaternary are discoveied by the trenches Tancheng-Lujiang fault zone,Xujing of Sixian country,Anhui Province,expressed for tensile fracture wedge,colluvial wedge and seismic fault.Based on comprehensive analysis of the phenomenon on site,preliminary view that:extensional activities of the fracture occur after Middle Pleistocene,a splitting wedge was formed,then high speed extrusion thrust faults,the thrust fault-colluvial wedge was generate.The latest activities of the fracture occurred after black soil overlying sediments,showed the small amplitude thrust activity,caused of faults on both sides of the black soil thickness difference.Latest active into the late Quaternary.Although known to be above subject to confirmed by the age of the samples tested and results of the analysis of the microscopic observation,but these attempts to understand the new activity in Quaternary style of the Tancheng-Lujiang fault zone is important significant obviously.
New activities since late Quaternary are discoveied by the trenches Tancheng-Lujiang fault zone,Xujing of Sixian country,Anhui Province,expressed for tensile fracture wedge,colluvial wedge and seismic fault.Based on comprehensive analysis of the phenomenon on site,preliminary view that:extensional activities of the fracture occur after Middle Pleistocene,a splitting wedge was formed,then high speed extrusion thrust faults,the thrust fault-colluvial wedge was generate.The latest activities of the fracture occurred after black soil overlying sediments,showed the small amplitude thrust activity,caused of faults on both sides of the black soil thickness difference.Latest active into the late Quaternary.Although known to be above subject to confirmed by the age of the samples tested and results of the analysis of the microscopic observation,but these attempts to understand the new activity in Quaternary style of the Tancheng-Lujiang fault zone is important significant obviously.
引文
姚大全,汤有标,沈小七,陈安国,郑海刚,赵朋,郑颖平,李光,肖伟鹏,2012,地震地质,郯庐断裂带赤山段中晚更新世之交的史前地震遗迹,34(1):93-99.
刘备,朱光,翟明见,顾承串,宋利宏,刘硕,2015,郯庐断裂带安徽段活动断层特征与成因,地质科学,50(2):611-630.
刘保金,酆少英,姬计法,石金虎,谭雅丽,李怡青,2015,郯庐庐断裂带中南段的岩石圈精细结构,地球物理学报,58(5):1610-1621.
施伟,张岳桥,董树文,郯庐断裂带中段第四纪活动及分段特征,2003,地球学报,24(1):11-18.
龚伟,曾佐勋,王杰,徐大良,胡烨,李西光,郯庐断裂带江苏段第四纪活动研究,2010,地震研究,33(1):86-94.
姚大全,汤有标,沈小七,陈安国,郑海刚,赵朋,郑颖平,李光,肖伟鹏,2012,地震地质,郯庐断裂带赤山段中晚更新世之交的史前地震遗迹,34(1):93-99.
刘备,朱光,翟明见,顾承串,宋利宏,刘硕,2015,郯庐断裂带安徽段活动断层特征与成因,地质科学,50(2):611-630.
刘保金,酆少英,姬计法,石金虎,谭雅丽,李怡青,2015,郯庐庐断裂带中南段的岩石圈精细结构,地球物理学报,58(5):1610-1621.
施伟,张岳桥,董树文,郯庐断裂带中段第四纪活动及分段特征,2003,地球学报,24(1):11-18.
龚伟,曾佐勋,王杰,徐大良,胡烨,李西光,郯庐断裂带江苏段第四纪活动研究,2010,地震研究,33(1):86-94.
姚大全,汤有标,沈小七,陈安国,郑海刚,赵朋,郑颖平,李光,肖伟鹏,2012,地震地质,郯庐断裂带赤山段中晚更新世之交的史前地震遗迹,34(1):93-99.
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