Shallow seismic exploration of the Anqiu-Juxian fault in Juxian Basin and its significance
WANG Wei1,2,3(), LIN Song1,2,3,4(), CHENG Miao1,2,3, JIN Chong4, ZHOU Hong-Wei4
1. Institute of Seismology,CEA,Wuhan 430071,China 2. Hubei Key Laboratory of Earthquake Early Warning,Wuhan 430071,China 3. Hubei Earthquake Administration,Wuhan 430071,China 4. Wuhan Institute of Earthquake Engineering Co. Ltd.,Wuhan 430071,China
Anqiu-Juxian fault in the Tanlu fault zone is in a concealed state in the Juxian basin.Geophysical data in the basin is very insufficient,and the distribution and spatial geometric characteristics of the fault are not clear.In view of such a situation,the buried faults in the basin were detected by shallow seismic reflection detection,and the distribution characteristics of Anqiu-Juxian fault in the basin were preliminarily discussed and analyzed in combination with the study of Zheng Chuanbei and other research results.The results show that the Anqiu-Juxian fault is located in the Quaternary sediments of Juxian basin,with relatively shallow burial depth.The fault is characterized by compressional thrust and positive fault in some sections.The shallow seismic reflection profile shows the new geophysical evidence of Anqiu-Juxian fault in Juxian basin and provides geophysical reference for the overall evaluation of the fault.
王薇, 林松, 程邈, 金聪, 周红伟. 安丘—莒县断裂莒县盆地段浅层地震探测及意义[J]. 物探与化探, 2021, 45(3): 609-615.
WANG Wei, LIN Song, CHENG Miao, JIN Chong, ZHOU Hong-Wei. Shallow seismic exploration of the Anqiu-Juxian fault in Juxian Basin and its significance. Geophysical and Geochemical Exploration, 2021, 45(3): 609-615.
Deng Q D, Zhang P Z, Ran Y K, et al. Basic characteristics of active tectonics of China[J]. Science in China Series D:Earth Sciences, 2003, 46(4):356-372.
Wang Z C, Jia R G, Sun Z M, et al. Geometric and active of Anqiu-Zhuli segment of the Anqiu-Juxian fault in the Yishu Fault Zone[J]. Seismology and Geology, 2005, 27(2):212-220.
Guan Y X, Zhai Z H, Li Z X, et al. Spatial distribution characteristics and activity analysis of Changyi section of Anqiu Juxian fault in Yishu Fault Zone[J]. Marine Geology Letters, 2007, 23(2):17-19.
Fang Z J, Ji F J, Xiang H F, et al. Review of Quaternary fault activity characteristics and seismogeological conditions in the middle part of Tanlu belt[J]. Geosciences, 1976, 11(4):354-366.
[7]
李善邦. 中国地震[M]. 北京: 地震出版社, 1981.
[7]
Li S B. Earthquakes in China [M]. Beijing: Seimological Press, 1981.
Cao J, Ran Y K, Xu H G, et al. Holocene activity of the Anqiu-Juxian fault on the Jiangsu segment of Tanlu fault zone and its tectonics implication[J]. Chinese Journal of Geophysics, 2018, 61(7):2828-2844.
Zhang P, Zhang Y Y, Li L M, et al. New evidence of Holocene activity in the Jiangsu Segment of Anqiu-Juxian fault of the Tanlu fault zone[J]. Seismological Geology, 2019, 41(3):576-586.
Fang S M, Zhang X K, Liu B J, et al. Optimal combination method and application of seismic exploration for active faults in cities[J]. Seismological Geology, 2006, 28(4):646-654.
Lin S, Tang Q J, Li Y, et al. Analysis and characteristics of faults around Danjiangkou reservoir,West Hubei Provience[J]. Earth Science, 2017, 42(10):1830-1841.
Lin S, Wang W, Li Y, et al. Shallow seismic profiles reveal the buried fault feature of Southern Qinling:A case of Danjiang fracture[J]. Journal of Geodesy and Geodynamics, 2019, 39(3):221-225.
Ma X G, Zhou J, Cai W Y, et al. The combined application of reflective wave imaging and P-wave velocity variation to the exploration and development offractured carbonate reservoirs of North China Oilfield[J]. Geophysical and Geochemical Exploration, 2020, 44(2):271-277.
Xu J G, Xu H, Zhang T, et al. Shallow tectonic characteristics and activity of the east branch fault in the Northern Segment of the Yishu Fault Zone[J]. Journal of Geology, 2019, 93(4):16-30.
Xu H G, Fan X P, Ran Y K, et al. Suqian F_5,Tancheng Lujiang fracture of shallow seismic exploration of new evidence[J]. Seismology and Geology, 2016, 38(1):31-43.
Zhong N C, Hou Z H. Characteristics of activities in the Juxian basin of Anqiu Juxian fault since Late Quaternary[J]. Journal of Disaster Prevention Science and Technology College, 2005, 7(4):7-11.
Xu M C, Gao J H, Liu J X, et al. Seismological methods and techniques applied to active fault investigation in cities[J]. Seismological of China, 2005, 21(1):17-23.
Chen S J, Liu S W, Yao Y S, et al. Research on structural analysis and Quaternary slip rate of Liangyun fault[J]. Journal of Geodesy and Geodynamics, 2004, 24(3):60-66.
Wang H Y, Gao R, Li Q S, et al. Deep seismic reflection profiling in the Songpan-West Qinling-Linxia Basin of the Qinghai-Tibet Plateau:date acquisition,date processing and preliminary interpretations Chinese[J]. Chinese Journal of Geophysics, 2014, 57(5):1451-1461.
[23]
孙家振. 地震地质综合解释教程[M]. 武汉: 中国地质大学出版社, 2002.
[23]
Sun J Z. Seismic geology interpretation [M]. Wuhan: China University of Geosciences Press, 2002.