Some Geologic Questions About Wenchuan Violent Earthquake

Abstract

Abstract: The analysis of the geologic tectonic background and structural units division of Longmenshan fault belt where the Wenchuan violent earthquake happened in May 2008 replies the questions about tectonic earthquakes, combined with sallow and deep structural characters of Longmenshan fault belt. It is indicated that Wenchuan violent earthquake belongs to tectonic earthquake resulted from intracontinental subduction (C-subduction), probably being the type of double major shocks plus aftershocks. Hence, it has high magnitude and intensive destruction. By comparison of the geologic conditions causing the earthquake of Longmenshan fault belt with Chengdu plain, it is believed that a big earthquake could not take place in Chendu plain for it locates within the stable ancient Yangtze plate.

Key words: Sichuan, Wenchuan, big earthquake, C-subduction, double major shock plus aftershocks, Chengdu

CLC Number:

P542
P315.2

SUN Wei, LUO Zhi-li, YANG Rong-jun, LIU Shu-gen, YONG Zi-quan, DAI Han-song. Some Geologic Questions About Wenchuan Violent Earthquake[J]. Xinjiang Petroleum Geology, 2009, 30(1): 124-128.

References

[1] 罗志立,龙学明. 龙门山造山带崛起和川西前陆盆地沉降[A]. 龙门山造山带崛起和四川盆地形成与演化[C]. 成都:成都科技大学出版社,1994:204–219.
[2] 罗志立,刘树根,雍自全,等. 中国陆内俯冲(C–俯冲)观的形成和发展[A]. 罗志立,李景明,刘树根. 中国板块构造和含油气盆地分析[C]. 北京:石油工业出版社,2005:257–266.
[3] 罗志立,刘树根. 试论龙门山冲断带大陆科学钻探选址问题[A]. 许志琴. 中国大陆科学钻探先行研究[C]. 北京:冶金工业出版社,1996:189–197.
[4] 罗志立,姚军辉,孙玮,等. 试解“中国地质百幕大”之迷[J]. 新疆石油地质,2004,26(1):40-51.
[5] 刘树根,罗志立,戴苏兰,等. 龙门山冲断带的隆升和川西前陆盆地的沉降[J]. 地质学报,1995,69(3):205-214.
[6] 刘树根,罗志立,曹树恒,等. 四川龙门山冲断带(中北段)岩石圈的层圈性和多级滑脱推覆[J]. 四川地质学报,1990,10(3):145-150.
[7] 刘树根,罗志立,宋鸿彪,等. 四川龙门山冲断带中北段岩石圈结构研究[J]. 石油与天然气地质,1990,11(1):86-95.
[8] 罗志立. 龙门山造山带岩石圈演化的动力学模式[J]. 成都地质学院学报,1991,18(1):1-7.
[9] 刘树根,田小彬,李智武,等. 龙门山中段构造特征与汶川地震[J]. 成都理工大学学报(自然科学版),2008,35(4):388-397.
[10] 陈国光,计凤桔,周荣军,等. 龙门山断裂带第四纪活动性分段的初步研究[J]. 地震地质,2007,29(3):657-673.
[11] 马宗晋. 20 世纪地震预报科学的回顾与展望[J]. 国际地震动态,2000,(6):1-4.
[12] 徐水淼,任寰,宋杰. 龙泉山断裂带地震活动浅析[J]. 四川地震,2006,119:21-27.
[13] 黄圣睦,董瑞英. 中国强震活动图像解释的新发现[A].龙门山造山带的崛起和四川盆地的形成和演化[C]. 成都:电子科技大学出版社,1994.

[1]	ZHANG Shunli, YANG Yingtao, ZHANG Ling, CAO Yanhui. Formation Mechanism of Secondary Quartz and Its Influence on Physical Properties of Xu 2 Member Reservoir in Western Sichuan Depression [J]. Xinjiang Petroleum Geology, 2023, 44(1): 25-32.
[2]	YU Shuyan, WANG Yang, FENG Hongye, ZHU Hongjian. Influences of Shale Rheology on Pore Structures of Qiongzhusi Formation in Chengkou Area, Northeastern Sichuan Basin [J]. Xinjiang Petroleum Geology, 2022, 43(5): 513-518.
[3]	XIE Qiang, LI Gao, PENG Hongli, HE Long, GONG Hanbo. Characteristics and Quantitative Prediction of Structural Fractures in Lei4 Member Reservoir in Pengzhou Area, Western Sichuan Basin [J]. Xinjiang Petroleum Geology, 2022, 43(5): 519-525.
[4]	HE Zhao, GAO Zhaolong, LI Guorong, HE Sai, MO Guochen, TIAN Jiaqi, LI Xiaoxiao. Dissolution Stage and Pattern of Reservoirs in Maokou Formation in Yunjin Area, Southern Sichuan Basin [J]. Xinjiang Petroleum Geology, 2022, 43(5): 537-545.
[5]	LI Mingyang, LI Chengyin, QU Dapeng. Characteristics and Genesis of Condensate Reservoirs of Lianggaoshan Formation in Fuling Area, Southeastern Sichuan Basin [J]. Xinjiang Petroleum Geology, 2022, 43(4): 387-395.
[6]	DUAN Wengang, LIN Wen, TIAN Jijun, MA Jinghui, DU Meng, LUO Jinchang. Fractal Characteristics and Main Controlling Factors of Wufeng-Longmaxi Formation Shale in Luobu Syncline, Southern Sichuan Basin [J]. Xinjiang Petroleum Geology, 2022, 43(2): 153-159.
[7]	ZHENG Jian, FU Yongqiang, CHEN Man, JING Cui, ZHANG Jing, ZHOU Hao, ZHANG Jiahao. Application of Vertical P⁃Wave Slowness in Porosity Evaluation of Shale Gas Reservoirs in Highly Deviated or Horizontal Wells [J]. Xinjiang Petroleum Geology, 2021, 42(zk(English)): 158-164.
[8]	LI Yuan, CHEN Sheng, WANG Peng, LIU Wei, FAN Kun, SUN Fu. Seismic Response Identification of Karst Reservoir in Lower Permian Maokou Formation in Southern Sichuan Basin [J]. Xinjiang Petroleum Geology, 2021, 42(5): 529-540.
[9]	HU Dongfeng, WANG Liangjun, HUANG Renchun, PAN Changlin, ZHANG Qingfeng. Petroleum Exploration History and Enlightenment in Sichuan Basin: A Case Study on Sinopec Exploration Areas [J]. Xinjiang Petroleum Geology, 2021, 42(3): 283-290.
[10]	DING Chuanqi, ZHOU Lu, ZHONG Kexiu, WU Yong, ZHONG Feiyan, LIU Yi. Prediction of Reef Reservoir in Changxing Formation of Damaoping Area, Eastern Sichuan Basin [J]. Xinjiang Petroleum Geology, 2020, 41(zk(English)): 25-32.
[11]	YANG Liu, ZANG Dianguang, XU Baoliang, DENG Shaoqiang, CHEN Hongfan, YANG Rongrong, CHEN Wei. Distribution and Genesis of Abnormal Bodies in Maokouzu Sag in Kaijiang Area, Northeastern Sichuan Basin [J]. Xinjiang Petroleum Geology, 2020, 41(5): 542-549.
[12]	HE Chuanliang, KANG Jianyun, WANG Xin, ZHANG Shimao. Reservoir Flow Unit Division Based on Sedimentary Microfacies-Reservoir Space Type: A Case of Carbonate Reservoir of Leikoupo Formation in Pengzhou Gas Field [J]. Xinjiang Petroleum Geology, 2020, 41(4): 435-443.
[13]	LI Rong, HU Hao, SHI Guoshan, XI Chengwei. Genesis of Dolomitization of Permian Maokou Formation in Langzhong Area, Northeastern Sichuan Basin [J]. Xinjiang Petroleum Geology, 2020, 41(2): 127-132.
[14]	DING Chuanqi, ZHOU Lu, ZHONG Kexiu, WU Yong, ZHONG Feiyan, LIU Yi. Prediction of Reef Reservoir in Changxing Formation of Damaoping Area, Eastern Sichuan Basin [J]. Xinjiang Petroleum Geology, 2020, 41(2): 164-171.
[15]	TIAN Xingwang, ZHANG Xihua, PENG Hanlin, MA Kui, YANG Dailin, SUN Yiting. Productivity Differences of Gas Reservoirs in the Fourth Member of Sinian Dengying Formation in Gaoshiti-Moxi Area, Central Sichuan Basin [J]. Xinjiang Petroleum Geology, 2019, 40(zk(English) ): 673-679.