TECTONIC DEFORMATION FEATURES OF SHENNONGJIA REGION IN EASTERN DABASHAN FORELAND STRUCTURAL BELT
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摘要: 神农架地区位于大巴山前陆弧形构造带东段, 以阳日断裂为界, 可分为北带基底拆离带和南带神农架隆起, 北带以E -W走向的基底拆离和盖层滑脱为特征, 古生界盖层褶皱紧闭; 南带神农架隆起周缘的盖层变形特征各异, 北缘变形较弱, 东缘变形很强, 其西、南周缘发育特征的裙边状褶皱构造, 南缘裙边褶皱以枢纽大角度倾伏为典型特征。古构造应力场反演结果显示, 该区主要受控于近S -N向主压应力作用; 受到神农架、黄陵两个隆起相向对挤作用, 神农架隆起东缘主压应力方向为NW -SE向, 两个不同方向的应力场可能均与早燕山期大巴山强烈的陆内造山作用有关。综合分析和对比结果显示, 大巴山前陆构造带东段的构造演化历史经历了印支雏形期和早燕山定型期两个构造演化阶段, 神农架基底隆起对大巴山前陆弧型构造带的形成起到了限制作用, 神农架地区的构造变形研究对于探讨大巴山前陆弧形带的形成和演化具有重要的指导意义。Abstract: Shennongjia is located in the eastern part of Dabashan foreland arc-shaped structural belt. With the Yangri fault as a boundary, this region can be divided into the northern and southern parts. The northern part is characterized by W-E trending basement-involved detachment and cover folding, with the Palaeozoic cover closely folded. The southern part, named Shennongjia basement uplift, has different deformation features in the periphery, with deformation weak in northern margin but strong in the eastern one. As to this uplift, there are skirt-like fold structures in its western and southern margins, and the southern ones were characterized by fold hinge with large plunge angle. From the field analysis of fault kinematics and paleo-tectonic stress inversion from slip vectors, we can see that the region was mainly controlled by S - N compression stress field, but the stress field of the eastern margin was changed into NW -SE because of the compression from Shennongjia and Huangling uplift. Regional structural analysis and comparison showed that the eastern part of Dabashan foreland structural belt experienced Indosian primary formation stage and Yanshan final formation stage, and the Shennongjia basement uplift played a role of restriction in the formation of Dabashan foreland arc-shaped structural belt. The research on the deformation of Shennongjia has great significance to understanding the formation and evolution of the Dabashan foreland arc-shaped structural belt.
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图 1 大巴山及邻区地质构造纲要图
Figure 1. Structural outline of Daba Mountains and the adjacent areas
图 2 神农架地区构造纲要及应力场分布平面图
Figure 2. Structural outline and tectonic stress fields in Shennongjia region
图 3 神农架南北向地质廊带与AB构造剖面图
Figure 3. N-S structural gallery belt and schematic structural section across Shennongjia
图 5 神农架地区断层滑动矢量及其应力反演结果
Figure 5. Fault slip vectors in the Shennonghjia region and tectonic stress inversions
图 8 北带盖层变形与基底变形不协调
Figure 8. Uncoordinated deformations between the cover and basement in the northern part
图 11 神农架隆起南缘裙边褶皱特征
Figure 11. Field view of the skirt-like fold in the southern margin of Shennongjia uplift
表 1 大巴山前陆带东段断层滑动矢量及应力场反演结果
Table 1. Tectonic stress fields in the eastern part of Dabashan foreland structural belt
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[1] 张国伟, 董云鹏, 赖绍聪, 等.秦岭-大别造山带南缘勉略构造带与勉略缝合带[J].中国科学(D辑), 2003, 33(12) :1121~ 1135. http://d.old.wanfangdata.com.cn/Periodical/zgkx-cd200312001ZHANG Guo-wei, DONG Yun-peng, LAI Shao-cong, et al. Mianlue tectonic belt and Mianlue suture zone in the southern margin of Qinling-Dabie orogenic belt[J]. Science in China(Series D), 2003, 33(12):1121~ 1135. http://d.old.wanfangdata.com.cn/Periodical/zgkx-cd200312001 [2] 张国伟, 程顺有, 郭安林, 等.秦岭-大别中央造山系南缘勉略古缝合带的再认识———兼论中国大陆主体的拼合[J].地质通报, 2004, 23(9~ 10):846~ 853. http://d.old.wanfangdata.com.cn/Periodical/zgqydz200409005ZHANG Guo-wei, CHENG Shun-you, GUO An-lin, et al. Mianlue paleo-suture in the southern margin of the central orogenic system in Qinling-Dabie with a discussion of the assembly of the main part of the continent of China[J]. Geological Bulletin of China, 2004, 23(9~ 10): 846~ 853. http://d.old.wanfangdata.com.cn/Periodical/zgqydz200409005 [3] WANG Er-chie, MENG Qing-ren, Burchfiel B C, et al. Mesozoic large-scale lateral extrusion, rotation, and uplift of the TongbaiDabie Shan belt in east China[J]. Geology, 2003, 31(4): 307~ 310. doi: 10.1130-0091-7613(2003)031-0307-MLSLER-2.0.CO%3b2/ [4] 董树文, 胡建民, 李三忠, 等.大别山侏罗纪变形及其构造意义[J].岩石学报, 2005, 21(4):1189~ 1194. http://d.old.wanfangdata.com.cn/Periodical/ysxb98200504017DONG Shu-wen, HU Jian-min, LI San-zhong, et al. The Jurassic deformation in the Dabie Mountains and its tectonic significances [J]. Acta Petrologica Sinica, 2005, 21(4):1189~ 1164. http://d.old.wanfangdata.com.cn/Periodical/ysxb98200504017 [5] 董树文, 胡建民, 施炜, 等.大巴山侏罗纪叠加褶皱与侏罗纪前陆[J].地球学报, 2006, 27(5):403~ 410. doi: 10.3321/j.issn:1006-3021.2006.05.003DONG Shu-wen, HU Jian-min, SHI Wei, et al. Jurassic superposed folding and Jurassic foreland in the Daba Mountain, central China[J]. Acta Geoscientica Sinica, 2006, 27(5):403~ 410. doi: 10.3321/j.issn:1006-3021.2006.05.003 [6] 施炜, 董树文, 胡健民, 等.大巴山前陆西段叠加构造变形分析及其构造应力场特征[J].地质学报, 2007, 81 (10):1314~ 1327. doi: 10.3321/j.issn:0001-5717.2007.10.002SHI Wei, DONG Shu-wen, HU Jian-min, et al.An analysis of superposed deformation and tectonic stress fields of the western segment of Daba Mountains Foreland[J].Acta Geologica Sinica, 2007, 81(10):1314~ 1327. doi: 10.3321/j.issn:0001-5717.2007.10.002 [7] 张忠义, 董树文, 张岳桥, 等.大巴山前陆北西向褶皱的厘定及其意义[J].地质论评, 2009, 55 (1):10~ 23. doi: 10.3321/j.issn:0371-5736.2009.01.002ZHANG Zhong-yi, DONG Shu-wen, ZHANG Yue-qiao, et al.NW Folding distinguished in the northwestern Daba Mountains, central China, and it’ s tectonic significances[J].Geological Review, 2009, 55 (1):10~ 23. doi: 10.3321/j.issn:0371-5736.2009.01.002 [8] 周鼎武, 董云鹏, 华洪, 等."磨拉石建造"和"不整合"在地层对比中的意义———以扬子地块及其北缘晚前寒武纪地层为例[J].地质论评, 1996, 42 (5):416~ 423. doi: 10.3321/j.issn:0371-5736.1996.05.006ZHOU Ding-wu, DONG Yun-peng, HUA Hong, et al.The significance of Molasse formation and unconformity in the stratigraphic division and correlation:Evidence from the Late Precambrian strata of the Yangtze Plate and its northern margin[J].Geological Review, 1996, 42 (5):416~ 423. doi: 10.3321/j.issn:0371-5736.1996.05.006 [9] 何建坤, 卢华复, 张庆龙, 等.南大巴山冲断构造及其剪切挤压动力学机制[J].高校地质学报, 1997, 3 (4): 419~ 428. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=QK199700148680HE Jian-kun, LU Hua-fu, ZHANG Qing-long, et al.The thrust tectonics and it’ s transpressive geodynamics in southern Dabashan Mountains[J].Geological Journal of China Universities, 1997, 3 (4):419~ 428. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=QK199700148680 [10] 徐亚军, 杨坤光, 马昌前.秦岭地区城口-房县断裂带变形特征及ESR定年[J].现代地质, 2005, 19 (1):127~ 132. doi: 10.3969/j.issn.1000-8527.2005.01.019XU Ya-jun, YANG Kun-guang, MA Chang-qian.Deformation characteristics and the ESR dating of Chengkou-Fangxian fault zone in the Qinling area[J].Geoscience, 2005, 19 (1):127~ 132. doi: 10.3969/j.issn.1000-8527.2005.01.019 [11] 刘树根, 李智武, 刘顺, 等.大巴山前陆盆地———冲断带的形成演化[M].北京:地质出版社, 2006. 1~ 248.LIUShu-gen, LI Zhi-wu, LIU Shun, et al.Formation and evolution of Dabashan foreland basin-thrust belt[M].Beijing : Geological Publishing House, 2006.1~ 248. [12] 尹安, 党玉琪, 陈宣华, 等.柴达木盆地新生代演化及其构造重建———基于地震剖面的解释[J].地质力学学报, 2007, 13(3):193~ 211. doi: 10.3969/j.issn.1006-6616.2007.03.001YIN An, DANG Yu-qi, CHEN Xuan-hua, et al.Cenozoic evolution and tectonic reconstruction of the Qaidam basin:Evidence fro m seismic profiles[J].Journal of Geomechanics, 2007, 13 (3):193~ 211. doi: 10.3969/j.issn.1006-6616.2007.03.001 [13] 邓晋福, 赵国春, 苏尚国, 等.燕山造山带燕山期构造叠加及其大地构造背景[J].大地构造与成矿学, 2005, 29 (2):157~ 165. doi: 10.3969/j.issn.1001-1552.2005.02.001DENG Jin-fu, ZHAO Guo-chun, SU Shang-guo, et al.Structure overlap and tectonic setting of Yanshan orogenic belt in Yanshan era[J].Geotectonica et Metallogenia, 2005, 29 (2) :157~ 165. doi: 10.3969/j.issn.1001-1552.2005.02.001 [14] 马托埃M. 地壳变形[M]. 孙坦, 张道安, 译. 北京: 地质出版社, 1984. 1~ 339.Mattauer M. The deformation of the earth’ s crust[M]. SUN Tan, ZHANG Dao-an, (Translated). Beijing : Geological Publishing House, 1984. 1~ 339. [15] 霍布斯B E, 明斯W D, 威廉斯P F. 构造地质学纲要[M]. 刘和甫, 吴正文, 译. 北京: 石油工业出版社, 1982. 1~ 346.Hobbs B E, Means W D, Williams P F. An outline of structural geology[M]. LIU He-pu, WU Zheng-wen, (Translated). Beijing : Petroleum Industry Press, 1982. 1~ 346. [16] 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.1006-6616.2008.03.001WANG Lian-jie, ZHOU Chun-jing, 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 [17] 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.1006-6616.2009.02.001WANG Lian-jie, CUI Jun-wen, ZHOU Chun-jing, et al.Numerical modeling of Wenchuan 5. 12 earthquake mechanism[J]. Journal of Geomechanics, 2009, 15(2):105~ 113. doi: 10.3969/j.issn.1006-6616.2009.02.001 [18] 彭华, 吴珍汉, 马秀敏.青藏铁路无人值守地应力综合监测站[J].地质力学学报, 2006, 12 (1):96~ 104. doi: 10.3969/j.issn.1006-6616.2006.01.015PENG Hua, WU Zhen-han, MA Xiu-min.Unmanned in-situ stress monitoring stations along the Qinghai-Tibet railway[J]. Journal of Geomechanics, 2006, 12(1):96~ 104. doi: 10.3969/j.issn.1006-6616.2006.01.015 [19] 马秀敏, 彭华, 李金锁.新疆西部地应力测量在隧道工程中的应用[J].地质力学学报, 2005, 11 (4):386 ~ 393. doi: 10.3969/j.issn.1006-6616.2005.04.013MA Xiu-min, PENG Hua, LI Jin-suo.Application of hydraulic fracturing in-situ stress measurements in tunneling in western Xinjiang[J].Journal of Geomechanics, 2005, 11(4):386~ 393. doi: 10.3969/j.issn.1006-6616.2005.04.013 [20] 李金锁, 彭华, 崔巍, 等.云南西北部铁路隧道地应力测试及工程应用[J].地质力学学报, 2005, 11(2):135 ~ 144. doi: 10.3969/j.issn.1006-6616.2005.02.005LI Jin-suo, PENG Hua, CUI Wei, et al.Reaults of rock stress measurements and engineering application of a railway tunnel in northwestern Yunnan[J].Journal of Geomechanics, 2005, 11(2):135~ 144. doi: 10.3969/j.issn.1006-6616.2005.02.005 [21] 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.1006-6616.2009.02.002PENG Hua, MA Xiumin, JIANG Jingjie.Stability and stress measurement near the Qingchuan fault in the northern Longmen M ountains[J].Journal of Geomechanics, 2009, 15(2):114~ 130. doi: 10.3969/j.issn.1006-6616.2009.02.002 [22] 彭华, 马秀敏, 姜景捷.山丹地应力监测站体应变仪的地震效应[J].地质力学学报, 2008, 14(2):97~ 108. doi: 10.3969/j.issn.1006-6616.2008.02.001PENG Hua, MA Xiu-min, JIANG Jing-jie.Analysis of the volume strain data from the Shandan in-situ stress Monitoring Station [J].Journal of Geomechanics, 2008, 14(2):97~ 108. doi: 10.3969/j.issn.1006-6616.2008.02.001 [23] 张岳桥, 施炜, 廖昌珍, 等.鄂尔多斯盆地周边断裂运动学分析与晚中生代构造应力体制转换[J].地质学报, 2006, 80(5):639~ 647. doi: 10.3321/j.issn:0001-5717.2006.05.002ZHANG Yue-qiao, SHI Wei, LIAO Chang-zhen, et al.Fault kinematic analysis and change in Late Mesozoic tectonic stress regimes in the peripheral zones of the Ordos Basin, north China[J]. Acta Geologica Sinica, 2006, 80(5): 639~ 647. doi: 10.3321/j.issn:0001-5717.2006.05.002 [24] 贾承造, 魏国齐, 李本亮, 等.中国中西部两期前陆盆地的形成及其控气作用[J].石油学报, 2003, 24(2): 13~ 17. doi: 10.3321/j.issn:0253-2697.2003.02.003JIA Cheng-zao, WEI Guo-qi, LI Ben-liang, et al.Tectonic evolution of two-epoch foreland basins and its control for natural gas accumulation in China' s mid-western areas[J]. Acta Petrolei Sinica, 2003, 24(2):13~ 17. doi: 10.3321/j.issn:0253-2697.2003.02.003 [25] 许志琴, 卢一伦, 汤耀庆, 等.东秦岭造山带的变形特征及构造演化[J].地质学报, 1986, (3):237~ 247. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=QK000005188200XU Zhi-qin, LU Yi-lun, TANG Yao-qing, et al.Deformation characteristics and tectonic evolution of the eastern Qinling orogenic belt[J]. Acta Geologica Sinica, 1986, (3): 237~ 247. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=QK000005188200 [26] 邓康龄.四川盆地形成演化与油气勘探领域[J].天然气工业, 1992, 12(5):7~ 12. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=QK000003127675DENG Kang-ling. Formation and evolution of Sichuan Basin and domains for oil and gas exploration[J]. Natural Gas Industry, 1992, 12(5): 7~ 12. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=QK000003127675 [27] 乐光禹.大巴山造山带及其前陆盆地的构造特征和构造演化[J].矿物岩石, 1998, 18(增刊):8~ 15. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=QK199800362137YUE Guang-yu.Tectonic characteristics and tectonic evolution of Dabashan orogenic belt and its foreland basin[J].Journal of M ineralogy and Petrology, 1998, 18(Supp.): 8~ 15. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=QK199800362137 [28] 胡宝清, 李旭, 木士春.长江流域中央造山系盆———山体系的构造样式分析及其动力学机制探讨[J].大地构造与成矿学, 2001, 25(1):36~ 45. doi: 10.3969/j.issn.1001-1552.2001.01.004HU Bao-qing, LI Xu, MU Shi-chun. Analysis of structural styles of the basin-range systems in the central-China orogenic chain of Yangtze valley and the dynamic mechanism[J]. Geotectonica et Metallogenia, 2001, 25(1) :36~ 45. doi: 10.3969/j.issn.1001-1552.2001.01.004 [29] 汪泽成, 赵文智, 徐安娜, 等.四川盆地北部大巴山山前带构造样式与变形机制[J].现代地质, 2006, 20(3): 429~ 435. doi: 10.3969/j.issn.1000-8527.2006.03.010WANG Ze-cheng, ZHAO Wen-zhi, XU An-na, et al.Structure styles and their deformation mechanisms of Dabashan foreland thrust belt in the north of Sichuan Basin[J]. Geoscience, 2006, 20(3): 429~ 435. doi: 10.3969/j.issn.1000-8527.2006.03.010 [30] 汪泽成, 邹才能, 陶士振, 等.大巴山前陆盆地形成及演化与油气勘探潜力分析[J].石油学报, 2004, 25(6): 23~ 28. doi: 10.3321/j.issn:0253-2697.2004.06.005WANG Zecheng, ZOU Cai-neng, TAO Shi-zhen, et al.Analysis on tectonic evolution and exploration potential in Dabashan for eland basin[J].Acta Petrolei Sinica, 2004, 25(6):23~ 28. doi: 10.3321/j.issn:0253-2697.2004.06.005 [31] 沈传波, 梅廉夫, 徐振平, 等.四川盆地复合盆山体系的结构构造和演化[J].大地构造与成矿学, 2007, 31 (3):288~ 299. doi: 10.3969/j.issn.1001-1552.2007.03.004SHEN Chuan-bo, MEI Lian-fu, XU Zhen-ping, et al.Architecture and tectonic evolution of composite basin-mountain system in Sichuan Basin and its adjacent areas[J]. Geotectonica et Metallogenia, 2007, 31(3): 288~ 299. doi: 10.3969/j.issn.1001-1552.2007.03.004 [32] 何建坤, 卢华复, 朱斌.东秦岭造山带南缘北大巴山构造反转及动力学[J].地质科学, 1999, 34(2):139 ~ 153. http://www.cnki.com.cn/Article/CJFDTOTAL-DZKX902.001.htmHE Jian-kun, LU Hua-fu, ZHU Bin. The tectonic inversion and its geodynamic processes in northern Daba Mountains of eastern Qinling orogenic belt[J]. Scientia Geologica Sinica, 1999, 34(2) :139~ 153. http://www.cnki.com.cn/Article/CJFDTOTAL-DZKX902.001.htm [33] 蔡学林, 魏显贵, 吴德超, 等.武当山推覆构造结构模式[J].成都地质学院学报, 1988, 15(4):30~ 39. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=QK000001169446CAI Xue-lin, WEI Xian-gui, WU De-chao, et al. Nappe structure patterns in the Wudang Mountains[J].Journal of Chengdu College of Goelogy, 1988, 15(4): 30~ 39. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=QK000001169446 [34] 蔡学林, 吴德超, 魏显贵.东秦岭造山带多重滑脱推覆与A型俯冲模式[J].成都理工学院学报, 1994, 21(1): 1~ 10. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=QK199400171423CAI Xue-lin, WU De-chao, WEI Xian-gui.A model for splintery slip-nappe and A-subduction of east Qinling orogenic belt[J]. Journal of Chengdu Institute of Technology, 1994, 21(1):1~ 10. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=QK199400171423 [35] 方向池, 蔡学林.湖北青峰韧性剪切带研究[J].成都理工学院学报, 1998, 25(3):375~ 384. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=QK199800206120FANG Xiang-chi, CAI Xue-lin. Study of the Qingfeng nappe shear zone[J].Journal of Chengdu University of Technology, 1998, 25(3): 375~ 384. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=QK199800206120 -
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