龙门山断裂活动和川西高原隆升历史的裂变径迹测年

杨农; 张岳桥

龙门山断裂活动和川西高原隆升历史的裂变径迹测年

杨农^{1, 2},
张岳桥^{1, 2}

1.
国土资源部新构造运动与地质灾害重点实验室, 北京 100081
2.
中国地质科学院地质力学研究所, 北京 100081

基金项目:

本文为科技部973课题"龙门山地质构造断裂带及其与汶川蕴震动力条件分析" 2008CB425702

详细信息

作者简介:
杨农(1962-2010), 男, 研究员, 主要从事区域地质, 构造地质研究

中图分类号: P542⁺.3;P546;P542⁺1
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- PDF下载量: 31
- 被引次数: 0
出版历程
- 收稿日期: 2010-12-09
- 刊出日期: 2010-12-01

TISSION-TRACK DATING FOR ACTIVITY OF THE LONGMENSHAN FAULT ZONE AND UPLIFTING OF THE WESTERN SICHUAN PLATEAU

YANG Nong^{1, 2},
ZHANG Yueqiao^{1, 2}

1.
Key Laboratory of Neotectonic Movement and Geohazard, Ministry of Land and Resources, Beijing, 100081, China
2.
Institute of Geomechanics, Chinese Academy of Geological Sciences, Beijing, 100081, China

摘要

摘要: 通过12个构造岩、变质砂岩和花岗岩样品的磷灰石裂变径迹测年年龄分析, 结合前人研究成果, 初步确定了青藏高原东缘龙门山地区晚新生代主要断裂活动时期和区域隆升历史。结果表明, 龙门山逆冲推覆构造带2条主断裂:汶川-茂县断裂和映秀-北川断裂, 最晚一次强烈活动发生在早更新世(FT年龄为1.2~ 1.3 Ma), 高原内部北西向米亚罗断裂在中更新世(约0.5 Ma)发生过强烈活动; 后龙门山逆冲推覆构造带在中新世晚期开始快速隆升, 而高原内部强烈隆升发生在上新世末至中更新世。高原隆升导致深切河谷地貌的形成和发育。
- 晚新生代 /
- 川西高原 /
- 龙门山断裂带 /
- 隆升 /
- 裂变径迹测年
Abstract: Twelve samples of tectonites, metasediments and granites taken from the western Sichuan Plateau were dated in this study by apatite fission track dating method. The results are used to reconstruct uplifting history and fault activity of the Longmenshan tectonic belt in eastern margin of the Tibetan Plateau. It is shown that the recent activity of the two major boundary faults:the Wenchuan-Maowen fault and the Yingxiu-Beichuan fault, occurred in early Pleistocene (FT ages of 1.2~1.3 Ma); the Miyaluo fault developed in the interior of the plateau was strongly active in middle Pleistocene (around 0.5 Ma); the back Longmenshan tectonic zone started to uplift in Miocene; and the interior of the plateau began rapid uplift in latest Pliocene to Middle Pleistocene. The uplifting of the plateau caused formation of deep-incised river morphology.
- Late Cenozoic /
- western Sichuan Plateau /
- Longmenshan fault zone /
- Uplift /
- apatite fission track dating

HTML全文

图 1 川西高原裂变径迹测年数据分布与地质简图

1.中生代侵入体; 2.前中生代侵入体; 3.第四系; 4.古近系、新近系; 5.侏罗系、白垩系; 6.三叠系; 7.古生界; 8.元古宙; 9.断裂, WMF:汶川-茂县断裂, YBF:映秀-北川断裂, GAF:都江堰市-安县断裂; MYLF:米亚罗断裂, SPGF:松坪沟断裂; 10.高程点及高程值; 11.本次测试磷灰石裂变径迹年龄及样品编号; 12.U-TH/He测年数据, 据Kirby et al. (2002); 13.裂变径迹数据, 据Arne D. (1997), (a)为磷灰石数据, (z)为锆石数据; 14.A-A':图 3剖面位置、B-B':图 2剖面位置。

Figure 1. Sketch map of geology with fission-track ages in Western Sichuan Plateau

下载: 全尺寸图片幻灯片

图 2 FT1~3样品位置地形构造剖面图

PδO:二叠纪石英闪长岩; Sm:志留系茂县群; Nh:南华系苏雄组; Pt₂:中元古代黄水河群; Pt₁:早元古代康定群; Pt₁ N:早元古代铁镁质岩

Figure 2. Topographic profile and location of Samples FT1~3

下载: 全尺寸图片幻灯片

图 3 FT9~FT15样品位置地形构造剖面图

γδο:燕山期岩体; T:三叠系

Figure 3. Topographic profile showing location of samples FT9~FT15

下载: 全尺寸图片幻灯片

表 1 磷灰石裂变径迹样品数据表

Table 1. Results of apatite fission track dating

参考文献(42)

[1]	唐荣昌, 韩渭宾.四川活动断裂与地震[M].北京:地震出版社, 1993. TANG Rongchang, HAN Weibin. Avtive fractures and earthquakes in Sichuan Province[M]. Beijing:Seismological Publishing House, 1993.
[2]	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. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=QK199500063479 LIU Shugen, LUO Zhili, DAI Sulan, et al. The uplift of the Longmenshan thrust belt and subsidence of the western Sichuan foreland basin[J]. Acta Geologica Sinica, 1995, 69 (3):205~214. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=QK199500063479
[3]	Arne D, Worley B, Wilson C H, et al. Differential exhumation in response to episodic thrusting along the eastern margin of the Tibetan plateau[J]. Tectonophysics, 1997, 280:239~256. doi: 10.1016/S0040-1951(97)00040-1
[4]	刘树根, 赵锡奎, 罗志立, 等.龙门山造山带-川西前陆盆地系统构造事件研究[J].成都理工学院学报, 2001, 28 (3):221~230. doi: 10.3969/j.issn.1671-9727.2001.03.001 LIU Shugen, ZHAO Xikui, LUO Zhili, et al. Study on the tectonic events in the system of the Longmen Mountain, west Sichuan foreland basin, China[J]. Journal of Chengdu University of Technology, 2001, 28 (3):221~230. doi: 10.3969/j.issn.1671-9727.2001.03.001
[5]	蒋复初, 吴锡浩.青藏高原东南部地貌边界带晚新生代构造运动[J].成都理工学院学报, 1998, 25 (2):162 ~168. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=QK199800206093 JIANG Fuchu, WU Xihao. Late Cenozoic tectonic movement in geomorphologic boundary belt of southeastern QinghaiXizang Plateau[J]. Journal of Chengdu University of Technology, 1998, 25 (2):162~168. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=QK199800206093
[6]	Xu Ganqing, Kamp P J J. Tectonics and denudation adjacent to the Xianshuihe Fault, eastern Tibetan Plateau:Constraints from fission track thermochronology[J]. Journal of Geophysical Research, 2000, 105 (B8):19231~19251. doi: 10.1029/2000JB900159
[7]	Kirby E, Reiners P W, Krol M A, et al. Late Cenozoic evolution of eastern margin of the Tibetan Plateau:Inferences from ⁴⁰Ar/³⁹Ar and (U-Th)/He thermochronology[J]. Tectonics, 2002, 21 (1):1~20.
[8]	李勇, 侯中键, 司光影, 等.青藏高原东缘新生代构造层序与构造事件[J].中国地质, 2002, 29 (1):30~36. http://d.old.wanfangdata.com.cn/Periodical/zgdizhi200201006 LI Yong, HOU Zhongjian, SI Guangying, et al. Cenozoic tectonic sequence and tectonic events at the eastern margin of the Qinghai-Tibet plateau[J]. Chinese Geology, 2002, 29 (1):30~36. http://d.old.wanfangdata.com.cn/Periodical/zgdizhi200201006
[9]	唐荣昌, 文德华, 黄祖智, 等.松潘-龙门山地区主要活动断裂带第四纪活动特征[J].中国地震, 1991, 7 (3):64~71. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=QK000003894113 TANG Rongchang, WEN Dehua, HUANG Zuzhi, et al. The Quaternary activity characteristics of several major active faults in the Songpan-Longmenshan region[J]. Earthquake Research in China, 1991, 7 (3):64~71. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=QK000003894113
[10]	邓起东, 陈社发, 赵小麟.龙门山及其邻区的构造和地震活动及动力学[J].地震地质, 1994, 16 (4):389~ 403. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=QK199400054141 DENG Qidong, CHEN Shefa, ZHAO Xiaolin. Tectonics, scismisity and dynamics of Longmenshan Mountains and its adjacent regions[J]. Seismology and Geology, 1994, 16 (4):389~403. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=QK199400054141
[11]	陈社发, 邓起东, 赵小麟, 等.龙门山中段推覆构造带及相关构造的演化历史和变形机制(一)[J].地震地质, 1994, 16 (4):404~412. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=QK199400054142 CHEN Shefa, DENG Qidong, ZHAO Xiaolin, et al. Deformational characteristics, evolutionary history, and deformation mechanism of the middle Longmenshan thrust-nappes and related tectonics (Part Ⅰ)[J]. Seismology and Geology, 1994, 16 (4):404~412. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=QK199400054142
[12]	陈社发, 邓起东, 赵小麟, 等.龙门山中段推覆构造带及相关构造的演化历史和变形机制(二)[J].地震地质, 1994, 16 (4):413~421. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=QK199400054143 CHEN Shefa, DENG Qidong, ZHAO Xiaolin, et al. Deformational characteristics, evolutionary history, and deformation mechanism of the middle Longmenshan thrust-nappes and related tectonics (Part Ⅱ)[J]. Seismology and Geology, 1994, 16 (4):413~421. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=QK199400054143
[13]	赵小麟, 邓起东, 陈社发.龙门山逆断裂带中段的构造地貌学研究[J].地震地质, 1994.16 (4):422~428. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=QK199400054144 ZHAO Xiaolin, DENG Qidong, CHEN Shefa. Tectonic geomorphology of the central segment of the Longmengshan thrust belt, western Sichuan, southwestern China[J]. Seismology and Geology, 1994, 16 (4):422~428. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=QK199400054144
[14]	钱洪, 唐荣昌.成都平原的形成与演化[J].四川地震, 1997, (3):1~7. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=QK199700455791 QIAN Hong, TANG Rongchang. On the formation and evolution of the Chengdu Plain[J]. Earthquake Research in Sichuan, 1997, (3):1~7. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=QK199700455791
[15]	丁林, 钟大赉, 潘裕生, 等.东喜马拉雅构造结上新世以来快速抬升的裂变径迹证据[J].科学通报, 1995, 40 (16):1497~1500. doi: 10.3321/j.issn:0023-074X.1995.16.018 DING Lin, ZHONG Dalai, PAN Yusheng, et al. Fission track evidence of rapid uplifting of the east Himalaya structural knot since Pliocene[J]. Chinese Science Bulletin, 1995, 40 (16):1497~1500. doi: 10.3321/j.issn:0023-074X.1995.16.018
[16]	陈文寄、李齐、周新华, 等.西藏高原南部两次快速冷却事件的构造含义[J].地震地质, 1996, 18 (2):109 ~115. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=QK199600061821 CHEN Wenji, LI Qi, ZHOU Xinhua, et al. The tectonic implication of two rapid cooling events on the southern Xizang (Tibet) Plateau[J]. Seismology and Geology, 1996, 18 (2):109~115. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=QK199600061821
[17]	王军.西昆仑卡日巴生岩体和苦子干岩体的隆升——来自磷灰石裂变径迹分析的证据[J].地质论评, 1998, 44 (4):435~442. doi: 10.3321/j.issn:0371-5736.1998.04.013 WANG Jun. Uplift of the Karibasheng and Kuzigan granite in the west Kunlun Mountains:Evidence from apatite fission track analysis[J]. Geological Review, 1998, 44 (4):435~442. doi: 10.3321/j.issn:0371-5736.1998.04.013
[18]	陈正乐, 张岳桥, 王小风, 等.新生代阿尔金山脉隆升历史的裂变径迹证据[J].地球学报, 2001, 22 (5): 413~418. doi: 10.3321/j.issn:1006-3021.2001.05.006 CHEN Zhengle, ZHANG Yueqiao, WANG Xiaofeng, et al. Fission track dating of apatite constrains on the Cenozoic uplift of the Altyn Tagh Mountain[J]. Acta Geosicientia Sinica, 2001, 22 (5):413~418. doi: 10.3321/j.issn:1006-3021.2001.05.006
[19]	钟大赉, 丁林.青藏高原的隆起过程及其机制探讨[J].中国科学(D辑), 1996, 26 (4):289~295. doi: 10.3321/j.issn:1006-9267.1996.04.001 ZHONG Dalai, DING Lin. Discussion on the uplift process and mechanism of Qinghai-Tibet Plateau[J]. Science in China (Series D), 1996, 26 (4):289~295. doi: 10.3321/j.issn:1006-9267.1996.04.001
[20]	王庆隆、万景林.用裂变径迹法研究断层活动年龄的初步探讨[J].地震地质, 1988, 10 (4) 199~205. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=QK000000348827 WANG Qinglong, WAN Jinglin. Application of fission track method to timing of faulting[J]. Seismology and Geology, 1988, 10 (4) 199~205. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=QK000000348827
[21]	陈文寄, 计风桔, 王非, 等.年轻地质体系的年代测定[M].北京:地震出版社. 1991. CHEN Wenji, JI Fengju, WANG Fei, et al. Timing of young geological system[M]. Beijing:Seismological Publishing House, 1991.
[22]	龙学明, 罗志立. 龙门山冲断带的分区及其演化[A]. 见: 罗志立、赵锡奎、刘树根, 等. 龙门山造山带的崛起和四川盆地的形成与演化[C]. 成都: 成都科技大学出版社, 1994. LONG Xueming, LUO Zhili. Division and evolution of Longmenshan thrust belt[A]. In: LUO Zhi-li, ZHAO Xi-kui, LIU Shu-gen, et al. Uplift of Longmen Mountain orogenic belt and the formation and evolution of Sichuan Basin[C]. Chengdu: Chengdu University of Science and Technology Press, 1994.
[23]	罗志立, 赵锡奎, 刘树根, 等. 龙门山造山带的崛起和四川盆地的形成与演化[C]. 成都: 成都科技大学出版社, 1994. LUO Zhili, ZHAO Xikui, LIU Shugen, et al. Uplift of Longmen Mountain orogenic belt and the formation and evolution of Sichuan Basin[C]. Chengdu: Chengdu University of Science and Technology Press, 1994.
[24]	许志琴, 侯立玮, 王宗秀, 等.中国松潘-甘孜造山带的造山过程[M].北京:地质出版社. 1992. XU Zhiqin, HOU Liwei, WANG Zongxiu, et al. Orogenic process of the Songpan-Ganzi orogenic belt in China[M]. Beijing:Geological Publishing House, 1992.
[25]	曾允孚, 李勇.龙门山前陆盆地形成与演化[J].矿物岩石, 1995, 15 (1):40~49. http://d.old.wanfangdata.com.cn/Thesis/Y181199 ZENG Yunfu, LI Yong. The formation and evolution of Longmen Mountains foreland basin[J]. Journal of Mineralogy and Petrology, 1995, 15 (1):40~49. http://d.old.wanfangdata.com.cn/Thesis/Y181199
[26]	李勇, 曾允孚.龙门山前陆盆地充填序列[J].成都理工学院学报, 1994, 21 (3):46~55. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=QK199400171464 LI Yong, ZENG Yunfu. Fill sequence of Longmen Mountains foreland basin[J]. Journal of Chengdu University of Technology, 1994, 21 (3):46~55. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=QK199400171464
[27]	李勇, 孙爱珍.龙门山造山带构造地层学研究[J].地层学杂志, 2000, 24 (3):201~206. doi: 10.3969/j.issn.0253-4959.2000.03.006 LI Yong, SUN Aizhen. Tectostratigraphy of Longmenshan Orogen[J]. Journal of Stratigraphy, 2000, 24 (3):201~ 206. doi: 10.3969/j.issn.0253-4959.2000.03.006
[28]	Dirks P H G M, Wilson C J L, Chen S, et al. Tectonic evolution of the NE margin of the Tibetan Plateau:Evidence from the central Longmen Mountains, Sichuan Province, China[J]. Journal of Southeast Asian Earth Sciences, 1994, 9 (1~2):181~192. doi: 10.1016-0743-9547(94)90074-4/
[29]	林茂炳, 吴山.龙门山推覆构造变形特征[J].成都理工学院学报(自然科学版), 1991, 18 (1):46~54. http://d.old.wanfangdata.com.cn/Periodical/cdlgxyxb200103003 LIN Maobing, WU Shan. Deformational features of nappe structures in the Longmenshan Mountains[J]. Journal of Chengdu University of Technology (Science & Technology Edition), 1991, 18 (1):46~54. http://d.old.wanfangdata.com.cn/Periodical/cdlgxyxb200103003
[30]	马永旺, 杨尽.龙门山中段推覆构造的变形特征[J].成都理工学院学报, 2001, 28 (3):236~240. doi: 10.3969/j.issn.1671-9727.2001.03.003 MA Yongwang, YANG Jin. Tectonic deformation of the nappe tectonics in the middle Longmen Mountains[J]. Journal of Chengdu University of Technology, 2001, 28 (3):236~240. doi: 10.3969/j.issn.1671-9727.2001.03.003
[31]	刘顺.论龙门山中北段东缘印之运动晚幕的性质[J].成都理工学院学报, 1998, 25 (4):524~528. LIU Shun. On properties of tectonic movement in east margin of middle and northern Longmen Mountains at the end of Triassic period[J]. Journal of Chengdu University of Technology, 1998, 25 (4):524~528.
[32]	王连捷, 崔军文, 周春景, 等.汶川5.12地震发震机理的数值模拟[J].地质力学学报, 2009, 15 (2):105 ~113. doi: 10.3969/j.issn.1006-6616.2009.02.001 WANG Lianjie, CUI Junwen, ZHOU Chunjing, et al. Numerical modeling for Wenchuan earthquake mechanism[J]. Journal of Geomechanics, 2009, 15 (2):105~113. doi: 10.3969/j.issn.1006-6616.2009.02.001
[33]	彭华, 马秀敏, 姜景捷.龙门山北端青川断层附近应力测量与断层稳定性[J].地质力学学报, 2009, 15 (2): 114~130. doi: 10.3969/j.issn.1006-6616.2009.02.002 PENG Hua, MA Xiumin, JIANG Jingjie. Stability and stress measurement near the Qingchuan fault in the northern Longmen Mountains[J]. Journal of Geomechanics, 2009, 15 (2):114~130. doi: 10.3969/j.issn.1006-6616.2009.02.002
[34]	张永双, 石菊松, 孙萍, 等.汶川地震内外动力耦合及灾害实例[J].地质力学学报, 2009, 15 (2):131~ 141. doi: 10.3969/j.issn.1006-6616.2009.02.003 ZHANG Yongshuang, SHI Jusong, SUN Ping, et al. Coupling between endogenic and exogenic geological processes in the Wenchuan earthquake and example analysis of geo-hazards[J]. Journal of Geomechanics, 2009, 15 (2):131~141. doi: 10.3969/j.issn.1006-6616.2009.02.003
[35]	谭成轩, 孙叶, 吴树仁, 等. 5.12汶川Ms 8.0大地震后关于我国区域地壳稳定性评价的思考[J].地质力学学报, 2009, 15 (2):142~150. doi: 10.3969/j.issn.1006-6616.2009.02.004 TAN Chengxuan, SUN Ye, WU Shuren, et al. A consideration on regional crustal stability assessment after Ms 8.0 Wenchuan strong earthquake in China[J]. Journal of Geomechanics, 2009, 15 (2):142~150. doi: 10.3969/j.issn.1006-6616.2009.02.004
[36]	姚鑫, 张永双.基于差分干涉雷达的汶川地震同震形变特点[J].地质力学学报, 2009, 15 (2):151~161. doi: 10.3969/j.issn.1006-6616.2009.02.005 YAO Xin, ZHANG Yongshuang. Co-seismic deformation of 5.12 Wenchuan earthquake based on D-INSAR[J]. Journal of Geomechanics, 2009, 15 (2):151~161. doi: 10.3969/j.issn.1006-6616.2009.02.005
[37]	王连捷, 周春景, 孙东生, 等.汶川5.12地震引起的库仑应力变化及其对周边地震活动的影响[J].地质力学学报, 2008, 14 (3):193~200. doi: 10.3969/j.issn.1006-6616.2008.03.001 WANG Lianjie, ZHOU Chunjing, SUN Dong-sheng, et al. Coulomb stress changes caused by Wenchuan earthquake and its influence on seismic activity in the adjacent area[J]. Journal of Geomechanics, 2008, 14 (3):193~200. doi: 10.3969/j.issn.1006-6616.2008.03.001
[38]	马寅生, 张永双, 胡道功, 等.玉树地震地表破裂与宏观震中[J].地质力学学报, 2010, 16 (2):115~128. doi: 10.3969/j.issn.1006-6616.2010.02.002 MA yinsheng, ZHANG Yongshuang, HU Daogong. et al. The Surface Ruptures And The Macroscopical Epicenter Of Yushu Ms7.1Earthquake[J]. Journal of Geomechanics, 2010, 16 (2):115~128. doi: 10.3969/j.issn.1006-6616.2010.02.002
[39]	姚鑫, 张永双, 杨农, 等.玉树地震地表变形InSAR观测及初步分析[J].地质力学学报, 2010, 16 (2):129 ~136. doi: 10.3969/j.issn.1006-6616.2010.02.003 YAO Xin, ZHANG Yongshuang, YANG Nong, et, al. D-InSAR Deformation Observation and Preliminary Analysis of the Ms7.1 Yushu Earthquake[J]. Journal of Geomechanics, 2010, 16 (2):129~136. doi: 10.3969/j.issn.1006-6616.2010.02.003
[40]	王连捷, 崔军文, 王薇, 等.青海玉树Ms7.1地震发震过程的数值模拟[J].地质力学学报, 2010, 16 (2): 137~145. http://journal.geomech.ac.cn/ch/reader/view_abstract.aspx?flag=1&file_no=20100203&journal_id=dzlxxb WANG Lianjie, CUI Junwen, WANG Wei, et, al. Numercal modeling of Yushu Ms7.1 earthquake mechanism[J]. Journal of Geomechanics, 2010, 16 (20:137~145. http://journal.geomech.ac.cn/ch/reader/view_abstract.aspx?flag=1&file_no=20100203&journal_id=dzlxxb
[41]	甘建军, 黄润秋, 李前银, 等.都江堰-汶川公路汶川地震次生地质灾害主要特征和形成机理[J].地质力学学报, 16 (2):146~158. doi: 10.3969/j.issn.1006-6616.2010.02.005 GAN Jianjun, HUANG Runqiu, LI Qianyin, et al. Formation Mechanism Of Geo-Hazards Triggered By Wenchua Ms. 8.0 Earthquake Along Dujiangyan-Wenchuan Highway[J]. Journal of Geomechanics, 2010, 16 (2):146~158. doi: 10.3969/j.issn.1006-6616.2010.02.005
[42]	文德华.龙门山北段断裂活动特征[J].四川地震. 1994, (1):53~57. http://d.old.wanfangdata.com.cn/Periodical/diz2009z1022 WEN De-hua. Characteristics of fracture activity in the northern Longmenshan Mountains[J]. Earthquake Research in Sichuan, 1994, (1):53~57. http://d.old.wanfangdata.com.cn/Periodical/diz2009z1022