郯庐断裂带安徽浮山段晚第四纪以来活动新发现

doi:10.3969/j.issn.0253-4967.2017.05.002

摘要/Abstract

摘要： 郯庐断裂带淮河以南段第四纪地层分布不均，断层新活动研究存在一定的困难。在苏皖交界地区多次实地踏勘发现，淮河南侧的安徽浮山段断层发育于NNE向条形岗地的边缘，对第四纪地层和地貌仍有一定的控制作用。在浮山段开挖的三塘探槽、浮山南剖面等均显示，断层错断了晚第四纪地层，表明该段断裂晚更新世以来仍存在较强的活动。综合地层年代样品测试结果，浮山段断层最新活动时代可达全新世早期，最近1次古地震事件发生在（10.6±0.8）~（7.6±0.5） ka BP之间。探槽及剖面揭露的断层表现为正右旋滑动特征，这或是断层所在区域局部构造应力场复杂性的表现。

关键词: 郯庐断裂带, 淮河以南, 浮山段, 全新世早期

Abstract: The east branch fault of Tan-Lu fault zone extends from Fengshan Town of Sihong County on the north shore of the Huaihe River in Jiangsu Province, into Fushan Town of Mingguang City on the south shore of Huaihe River in Anhui Province. The landform changes from Subei plain on the north of Huaihe River to Zhangbaling uplift area on the south of Huaihe River. The terrain rises gradually with larger relief amplitude. The Fushan section of the Tan-Lu fault zone is located in Ziyang to Fushan area of Mingguang City. The fault is shown in the satellite image as a clear linear image, and the fault extends along the east side of a NNE-trending hillock. In this section the Quaternary strata are unevenly distributed, which causes some difficulties in the study of recent fault activity.In recent years, the author has found that the fault of the Fushan section of the Tan-Lu fault zone on the south of the Huaihe River still has a certain control effect on the landform and the Quaternary strata. Based on satellite imagery and geological data, we select the appropriate location in the Fushan section to excavate the Santang trench Tc1 and Fushannan trench Tc2, and clean up the Fushannan profile Pm, which reveals rich phenomena of recent fault activity. Santang trench reveals three faults, and the faulting phenomenon is obvious. One of the faults shows the characteristic of right-lateral strike-slip normal faulting; Fushannan profile reveals one fault, with the same faulting behavior of right-lateral strike-slip normal fault. Comprehensive stratigraphic sample dating results indicate that the fault dislocated the middle Pleistocene strata, late Quaternary strata and early Holocene strata. All our work shows that the fault of Fushan section has intensive activity since late Pleistocene, and the latest active age can reach early Holocene. The latest earthquake occurred at(10.6±0.8)~(7.6±0.5)ka BP. The faults exposed by trenches and profiles show the characteristics of right-lateral strike-slip normal faulting, which reflects the complexity of the tectonic stress field in the area where the fault locates.

Key words: Tan-Lu fault zone, south of Huaihe River, Fushan segment, early Holocene

中图分类号:

P315.2

赵朋, 姚大全, 杨源源, 郑海刚, 王行舟, 许洪泰, 方震. 郯庐断裂带安徽浮山段晚第四纪以来活动新发现[J]. 地震地质, 2017, 39(5): 889-903.

ZHAO Peng, YAO Da-quan, YANG Yuan-yuan, ZHENG Hai-gang, WANG Xing-zhou, XU Hong-tai, FANG Zhen. A NEW DISCOVERY OF ACTIVITY OF FUSHAN SECTION OF THE TAN-LU FAULT ZONE IN THE LATE QUATERNARY[J]. SEISMOLOGY AND GEOLOGY, 2017, 39(5): 889-903.

参考文献

曹筠, 冉勇康, 许汉刚, 等. 2015. 宿迁城市活动断层探测多方法技术运用的典型案例［J］. 地震地质, 37(2):430-439. doi:10.3969/j.issn.0253-4967.2015.02.007. CAO Jun, RAN Yong-kang, XU Han-gang, et al. 2015. Typical case analysis on application of multi-method detection technique to active fault exploration in Suqian City［J］. Seismology and Geology, 37(2):430-439(in Chinese).
晁洪太, 李家灵, 崔昭文, 等. 1994. 郯庐断裂带中段全新世活断层的几何结构与分段［M］//国家地震局地质研究所. 活动断裂研究(3). 北京:地震出版社. CHAO Hong-tai, LI Jia-ling, CUI Zhao-wen, et al. 1994. Geometry and segmentation of the Quaternary fault in the middle segment of the Tanlu fault zone［M］//Institute of Geology, SSB. Research of Active Fault (3). Beijing:Seismological Press(in Chinese).
晁洪太, 王志才, 刘西林. 1999. 郯庐断裂带下辽河-莱州湾段与潍坊-嘉山段地震构造和地震活动特征对比［J］. 华北地震科学, 17(2):36-41. CHAO Hong-tai, WANG Zhi-cai, LIU Xi-lin. 1999. Comparison of seismotectonics and seismicities between the Xialiaohe-Laizhouwan segment and the Weifang-Jiashan segment of the Tancheng-Lujiang fault zone［J］. North China Earthquake Sciences, 17(2):36-41(in Chinese).
方仲景, 丁梦林, 计凤桔, 等. 1980. 郯城-庐江断裂带地震活动的地质分析［J］. 地震地质, 2(4):39-45. FANG Zhong-jing, DING Meng-lin, JI Feng-ju, et al. 1980. Geological analysis of the seismicity in the Tancheng-Lujiang fault zone, East China［J］. Seismology and Geology, 2(4):39-45(in Chinese).
方仲景, 向宏发, 丁梦林, 等. 1979. 苏鲁皖地区晚新生代构造应力场的初步探讨［J］. 地震地质, 1(4):11-25. FANG Zhong-jing, XIANG Hong-fa, DING Meng-lin, et al. 1979. Preliminary study of late Cenozoic tectonic stress field in Jiangsu-Shandong-Anhui region［J］. Seismology and Geology, 1(4):11-25(in Chinese).
国家地震局地质研究所. 1987. 郯庐断裂［M］. 北京:地震出版社. Institute of Geology, State Seismological Bureau. 1987. The Tanlu Fault Zone［M］. Beijing:Seismological Press(in Chinese).
何宏林, 宋方敏, 李传友, 等. 2004. 郯庐断裂带莒县胡家孟晏地震破裂带的发现［J］. 地震地质, 26(4):630-637. HE Hong-lin, SONG Fang-min, LI Chuan-you, et al. 2004. Hujiamengyan surface rupture in Juxian County, Shandong Province-A new discovery on the Tanlu fault zone［J］. Seismology and Geology, 26(4):630-637(in Chinese).
李家灵, 晁洪太, 崔昭文, 等. 1991. 郯庐断裂带郯城-新沂段活断层研究［M］//国家地震局地质研究所. 活动断裂研究(1). 北京:地震出版社:164-173. LI Jia-ling, CHAO Hong-tai, CUI Zhao-wen, et al. 1991. Researches on the active fault of the Tancheng-Xinyi segment of the Tanlu Fault［M］//Institute of Geology, SSB. Research of Active Fault (1). Beijing:Seismological Press:164-173(in Chinese).
李家灵, 晁洪太, 崔昭文, 等. 1994. 1668年郯城 8½ 级地震断层及其破裂机制［J］. 地震地质, 16(3):229-237. LI Jia-ling, CHAO Hong-tai, CUI Zhao-wen, et al. 1994. Seismic fault of the 1668 Tancheng earthquake(M=8½)and its fracture mechanism［J］. Seismology and Geology, 16(3):229-237(in Chinese).
李起彤. 1994. 郯庐断裂带江苏段全新世活动新证据［M］//中国地震学会地震地质专业委员会. 中国活动断层研究. 北京:地震出版社:140-145. LI Qi-tong. 1994. New evidence for the Holocene movement along the Jiangsu segment of the Tancheng-Lujiang fault zone［M］//Committee on Seismogeology, Seismological Society of China. Research of Active Faults in China. Beijing:Seismological Press:140-145(in Chinese).
刘备, 朱光, 胡红雷, 等. 2015. 郯庐断裂带江苏段新构造活动规律分析［J］. 地质学报, 89(8):1352-1366. LIU Bei, ZHU Guang, HU Hong-lei, et al. 2015. Analysis on neotectonic activity of Jiangsu part of the Tan-Lu fault zone［J］. Acta Geologica Sinica, 89(8):1352-1366(in Chinese).
刘备, 朱光, 翟明见, 等. 2015. 郯庐断裂带安徽段活断层特征与成因［J］. 地质科学, 50(2):611-630. LIU Bei, ZHU Guang, ZHAI Ming-jian, et al. 2015. Features and genesis of active faults in the Anhui segment of the Tan-Lu fault zone［J］. Chinese Journal of Geology, 50(2):611-630(in Chinese).
闵伟, 焦德成, 周本刚, 等. 2011. 依兰-伊通断裂全新世活动的新发现及其意义［J］. 地震地质, 33(1):141-150. doi:10.3969/j.issn.0253-4967.2011.01.014. MIN Wei, JIAO De-cheng, ZHOU Ben-gang, et al. 2011. The significance of discovery on Holocene activity on the Yilan-Yitong Fault in Northeast China［J］. Seismology and Geology, 33(1):141-150(in Chinese).
施炜, 张岳桥, 董树文. 2003. 郯庐断裂带中段第四纪活动及其分段特征［J］. 地球学报, 24(1):11-18. SHI Wei, ZHANG Yue-qiao, DONG Shu-wen. 2003. Quaternary activity and segmentation behavior of the middle portion of the Tan-Lu fault zone［J］. Acta Geoscientia Sinica, 24(1):11-18(in Chinese).
宋方敏, 杨晓平, 何宏林, 等. 2005. 山东安丘-莒县断裂小店子-茅埠段新活动及其定量研究［J］. 地震地质, 27(2):200-211. doi:10.3969/j.issn.0253-4967.2005.02.003. SONG Fang-min, YANG Xiao-ping, HE Hong-lin, et al. 2005. Quantitative analysis of recent activity of the Xiaodianzi-Maobu segment of the Anqiu-Juxian Fault, Shandong Province［J］. Seismology and Geology, 27(2):200-211(in Chinese).
沈小七, 姚大全, 郑海刚, 等. 2015. 郯庐断裂带重岗山-王迁段晚更新世以来的活动习性［J］. 地震地质, 37(1):139-148. doi:10.3969/j.issn.0253-4967.2015.01.011. SHEN Xiao-qi, YAO Da-quan, ZHENG Hai-gang, et al. 2015. The research on activity behavior of Chonggang-Wangqian segment of Tan-Lu fault zone since late Pleistocene［J］. Seismology and Geology, 37(1):139-148(in Chinese).
孙业君, 黄耘, 江昊琳, 等. 2015. 郯庐断裂带鲁苏皖段构造应力场及分段特征研究［J］. 地震, 35(3):66-75. SUN Ye-jun, HUAGN Yun, JIANG Hao-lin, et al. 2015. Tectonic stress field and segmentation characteristics in the Shandong-Jiangsu-Anhui segment of the Tancheng-Lujiang fault zone［J］. Earthquake, 35(3):66-75(in Chinese).
汤有标, 沈子忠, 林安培, 等. 1988. 郯庐断裂带安徽段的展布及其新构造活动［J］. 地震地质, 10(2):46-50. TANG You-biao, SHEN Zi-zhong, LIN An-pei, et al. 1988. Extending of the Tancheng-Lujiang fault zone at the Anhui section and its neotectonic activity［J］. Seismology and Geology, 10(2):46-50(in Chinese).
汤有标, 姚大全. 1990. 郯庐断裂带赤山段晚更新世以来的活动性［J］. 中国地震, 6(2):63-69. TANG You-biao, YAO Da-quan. 1990. Activity of the Chishan segment in the Tancheng-Lujiang fault zone, since the upper Pleistocene［J］. Earthquake Research in China, 6(2):63-69(in Chinese).
谢瑞征, 丁政, 李端璐. 1990. 江苏宿迁发现古地震遗迹［J］. 地震地质, 12(4):378-379. XIE Rui-zheng, DING Zheng, LI Duan-lu. 1990. Discovery of paleo-earthquake traces in Suqian area, Jiangsu Province［J］. Seismology and Geology, 12(4):378-379(in Chinese).
谢瑞征, 丁政, 朱书俊, 等. 1991. 郯庐断裂带江苏及邻区第四纪活动特征［J］. 地震学刊, (4):1-7. XIE Rui-zheng, DING Zheng, ZHU Shu-jun, et al. 1991. Active characteristics in the Jiangsu segment of the Tanlu fault zone and its vicinity［J］. Journal of Seismology, (4):1-7(in Chinese).
许汉刚, 范小平, 冉勇康, 等. 2016. 郯庐断裂带宿迁段F₅断裂浅层地震勘探新证据［J］. 地震地质, 38(1):31-43. doi:10.3969/j.issn.0253-4967.2016.01.003. XU Han-gang, FAN Xiao-ping, RAN Yong-kang, et al. 2016. New evidences of the Holocene fault in Suqian segment of the Tanlu fault zone discovered by shallow seismic exploration method［J］. Seismology and Geology, 38(1):31-43(in Chinese).
徐嘉炜, 马国锋. 1992. 郯庐断裂带研究的十年回顾［J］. 地质论评, 38(4):316-324. XU Jia-wei, MA Guo-feng. 1992. Review of ten years(1981-1991)of research on the Tancheng-Lujiang fault zone［J］. Geological Review, 38(4):316-324(in Chinese).
徐嘉炜, 朱光. 1995. 中国东部郯庐断裂带构造模式讨论［J］. 华北地质矿产杂志, 10(2):121-134. XU Jia-wei, ZHU Guang. 1995. Discussion on tectonic models for the Tan-Lu fault zone, eastern China［J］. Journal of Geology and Mineral Resources of North China, 10(2):121-134(in Chinese).
姚大全, 沈小七, 郑海刚, 等. 2014. 郯庐断裂带苏皖交界段落活动特征对比分析［J］. 地球物理学进展, 29(6):2587-2591. YAO Da-quan, SHEN Xiao-qi, ZHENG Hai-gang, et al. 2014. Comparative analysis of activity characteristics in junction segment of Jiangsu-Anhui Province in Tancheng-Lujiang fault zone［J］. Progress in Geophysics, 29(6):2587-2591(in Chinese).
姚大全, 汤有标, 沈小七, 等. 2012. 郯庐断裂带赤山段中晚更新世之交的史前地震遗迹［J］. 地震地质, 34(1):93-99. YAO Da-quan, TANG You-biao, SHEN Xiao-qi, et al. 2012. Prehistoric earthquakes in Chishan segment of Tancheng-Lujiang fault zone during mid-late Pleistocene［J］. Seismology and Geology, 34(1):93-99(in Chinese).
翟炳松, 侍继成, 杨一冲. 1992. 郯庐断裂带泗洪段全新世活动性初步研究［J］. 地震, (5):61-64, 71. ZHAI Bing-song, SHI Ji-cheng, YANG Yi-chong. 1992. Preliminary research on recent activity along Sihong segment of Tanlu fault zone［J］. Earthquake, (5):61-64, 71(in Chinese).
张鹏, 李丽梅, 冉勇康, 等. 2015. 郯庐断裂带安丘-莒县断裂江苏段晚第四纪活动特征研究［J］. 地震地质, 37(4):1162-1176. doi:10.3969/j.issn.0253-4967.2015.04.018. ZHAGN Peng, LI Li-mei, RAN Yong-kang, et al. 2015. Research on characteristics of late Quaternary activity of the Jiangsu segment of Anqiu-Juxian Fault in the Tanlu fault zone［J］. Seismology and Geology, 37(4):1162-1176(in Chinese).
张鹏, 李丽梅, 张景发, 等. 2011. 郯庐断裂带江苏段第四纪活动特征及其动力学背景探讨［J］. 防灾减灾工程学报, 31(4):389-396. ZHANG Peng, LI Li-mei, ZHANG Jing-fa, et al. 2011. A discuss of the characteristics of activities in Quaternary for the Jiangsu segment of Tan-Lu fault zone and its geodynamic setting［J］. Journal of Disaster Prevention and Mitigation Engineering, 31(4):389-396(in Chinese).
朱光, 王勇生, 牛漫兰, 等. 2004. 郯庐断裂带的同造山运动［J］. 地学前缘, 11(3):169-182. ZHU Guang, WANG Yong-sheng, NIU Man-lan, et al. 2004. Synorogenic movement of the Tan-Lu fault zone［J］. Earth Science Frontiers, 11(3):169-182(in Chinese).

[1]	赵朋, 李军辉, 陶月潮, 疏鹏, 方震. 郯庐断裂带女山湖北侧探槽的新活动现象及讨论[J]. 地震地质, 2023, 45(2): 338-354.
[2]	郑海刚, 姚大全, 赵朋, 杨源源, 黄金水. 郯庐断裂带赤山段全新世新活动的特征[J]. 地震地质, 2023, 45(1): 127-138.
[3]	杨源源, 李鹏飞, 路硕, 疏鹏, 潘浩波, 方良好, 郑海刚, 赵朋, 郑颖平, 姚大全. 郯庐断裂带中段F₅断裂淮河-女山湖段的古地震与垂直滑动速率[J]. 地震地质, 2022, 44(6): 1365-1383.
[4]	秦晶晶, 刘保金, 王志才, 酆少英, 邓小娟, 花鑫升, 李倩. 利用地震反射剖面探测研究安丘-莒县断裂板泉段的浅部构造特征[J]. 地震地质, 2022, 44(2): 349-362.
[5]	孙业君, 黄耘, 刘泽民, 郑建常, 江昊琳, 李婷婷, 叶青, 方韬. 郯庐断裂带鲁苏皖段及邻区构造应力场特征及其动力学意义[J]. 地震地质, 2021, 43(5): 1188-1207.
[6]	计昊旻, 李安, 张世民. 基于冲沟右旋水平位错的安丘-莒县断裂地震特征位移分析[J]. 地震地质, 2021, 43(3): 471-487.
[7]	顾勤平, 康清清, 张鹏, 孟科, 吴珊珊, 李正楷, 王俊菲, 黄群, 蒋新, 李大虎. 郯庐断裂带中南段及邻区Rayleigh波相速度与方位各向异性[J]. 地震地质, 2020, 42(5): 1129-1152.
[8]	顾勤平, 许汉刚, 晏云翔, 赵启光, 李丽梅, 孟科, 杨浩, 王金艳, 蒋新, 马董伟. 郯庐断裂带新沂段地壳浅部结构和断裂活动性探测[J]. 地震地质, 2020, 42(4): 825-843.
[9]	章鑫, 杜学彬. 郯庐断裂带南段对近地表大地电流的分异性[J]. 地震地质, 2020, 42(4): 909-922.
[10]	郑颖平, 杨晓平, 疏鹏, 路硕, 方良好, 石金虎, 黄雄南, 刘春茹. 合肥盆地中郯庐断裂带西支乌云山-合肥断裂最新活动特征[J]. 地震地质, 2020, 42(1): 50-64.
[11]	张继红, 赵国泽, 董泽义, 王立凤, 韩冰, 王庆林, 唐廷梅, 王梅. 郯庐断裂带安丘、莒县电磁台地壳电性结构研究[J]. 地震地质, 2019, 41(5): 1239-1253.
[12]	张鹏, 张媛媛, 李丽梅, 蒋新, 孟科. 郯庐断裂带安丘-莒县断裂江苏段全新世活动的新证据[J]. 地震地质, 2019, 41(3): 576-586.
[13]	翁爱华, 李建平, 范小平, 李斯睿, 韩江涛, 李大俊, 李亚彬, 赵祥阳, 唐裕. 大地电磁测深揭示的1668年郯城8.5级地震震中地壳精细结构[J]. 地震地质, 2018, 40(2): 396-409.
[14]	杨源源, 赵朋, 郑海刚, 姚大全, 王行舟, 缪鹏, 李军辉, 汪小厉, 疏鹏. 郯庐断裂带安徽紫阳山段发现全新世活动证据[J]. 地震地质, 2017, 39(4): 644-655.
[15]	赵朋, 姚大全, 杨源源, 郑海刚, 方良好. 郯庐断裂带大红山段晚第四纪以来的新活动[J]. 地震地质, 2017, 39(3): 550-560.