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西沙群岛石岛浅部基底地壳应力测量及其地球动力学意义分析

DOI: 10.6038/cjg20150318, PP. 904-918

Keywords: 西科1A井,浅部基底,水压致裂应力测量,地球动力学意义,西沙群岛,南海西北部

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Abstract:

西沙群岛独特的构造位置决定了其构造运动背景和地壳应力场动力源的复杂性.位于西沙群岛石岛、深达1268.07m的西科1A井在1257.52m钻遇花岗岩基底.在1125.8~1262.0m开展5次水压致裂地应力测量,获得最大水平主应力为17.09~20.85MPa,最小水平主应力为15.97~18.29MPa,估算垂直主应力为22.86~26.68MPa,地壳应力结构为SV>SH>Sh,以垂直主应力为主导,该应力结构特征有利于正断层活动,表明西沙群岛地壳基底处于拉张的应力环境.受西沙海槽断层影响,水平应力值较低.印模测试显示基底地壳应力方向以近东西-北西向为主,与已有的GPS测量、横波分裂和面波反演结果较为吻合,显示西沙群岛岩石圈尺度上变形一致性较好.西沙群岛地壳应力场的力源受板块运动和地幔物质上涌作用联合制约.综合南海西北部实测地应力数据分析,显示该区域主应力方向较为一致,应处于统一、稳定的构造运动背景之中.西科1A井水压致裂试验是我国首次涉海深孔地壳应力测量,具有重要的地球动力学意义,提供了研究南海地球物理场的宝贵基础资料.

References

[1]  Amadei B, Stephansson O. 1997. Rock stress and Its Measurement. London: Chapman & Hall, 3-10.
[2]  Bredehoeft J D, Wolff R G, Keys W S, et al. 1976. Hydraulic fracturing to determine the regional in situ stress field, Piceance Basin, Colorado. Geol. Soc. Amer. Bull., 87(2): 250-258.
[3]  Cao J H, Sun J L, Xu M H, et al. 2014. Seismological features of the littoral fault zone in the Pearl River Estuary. Chinese J. Geophys. (in Chinese), 57(2): 498-508, doi: 10.6038/cjg20140215.
[4]  Chang L J, Wang C Y, Ding Z F. 2009. Seismic anisotropy of upper mantle in eastern China. Sci. China Ser. D-Earth Sci., 52(6): 774-783, doi: 10.1007/s11430-009-0073-4.
[5]  Chen Q C, Feng C J, Meng W, et al. 2012. Analysis of in situ stress measurements at the northeastern section of the Longmenshan Fault Zone after 5.12 Wenchuan earthquake. Chinese J. Geophys. (in Chinese), 55(12): 3923-3932, doi: 10.6038/j.issn.0001-5733.2012.12.005.
[6]  Chen Q C, Fan T Y, Li X S, et al. 2014. In situ measurements and comprehensive research on the present crustal stress of Northern South China Sea. Chinese J. Geophys. (in Chinese), 57(8): 2518-2529, doi: 10.6038/cjg20140813.
[7]  Christensen N I. 1996. Poisson''s ratio and crustal seismology. J. Geophys. Res., 101(B2): 3139-3156.
[8]  Durham W B, Bonner B P. 1994. Self-propping and fluid flow in slightly offset joints at high effective pressures. Journal of Geophysical Research, 99(B5): 9391-9399.
[9]  Feng C J, Chen Q C, Tan C X, et al. 2013. In-situ stress measurement and its application to Guangdong nuclear power stations. Rock and Soil Mechanics (in Chinese), 34(6): 1745-1752.
[10]  Gao Y G, Li Y H. 2014. Crustal thickness and Vp/Vs in the Northeast China-North China region and its geological implication. Chinese J. Geophys. (in Chinese), 57(3): 847-857, doi: 10.6038/cjg20140314.
[11]  Gong Z S, Li S T, Xie T J, et al. 1997. Continental Margin Basin Analysis and Hydrocarbon Accumulation of the Northern South China Sea (in Chinese). Beijing: Science Press, 27-41.
[12]  Guo Q L, Wang C H, Ma H S, et al. 2009. In-situ hydro-fracture stress measurement before and after the Wenchuan MS8.0 earthquake of China. Chinese J. Geophys. (in Chinese), 52(5): 1395-1401, doi: 10.3969/j.issn.0001-5733.2009.05.029.
[13]  Haimson B C, Cornet F H. 2003. ISRM suggested methods for rock stress estimation-Part 3: Hydraulic fracturing (HF) and/or hydraulic testing of pre-existing fractures (HTPF). International Journal of Rock Mechanics & Mining Sciences, 40(7-8): 1011-1020.
[14]  Haimson. 1980. Near-surface and deep hydrofracturing stress measurements in the Waterloo quartzite. International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts, 17(2): 81-88.
[15]  Hao T Y, Xu Y, Zhao B M, et al. 2009. Geophysical research on distribution features of magnetic basements in the South China Sea. Chinese J. Geophys. (in Chinese), 52(11): 2763-2774, doi: 10.3969/j.issn.0001-5733.2009.11.011.
[16]  Heidbach O, Tingay M, Barth A, et al. 2008. The World Stress Map database release 2008, doi: 10.1594/GFZ.WSM.Rel2008.
[17]  Li Y M, Luo X H, Xu X, et al. 2010. Seafloor in-situ heat flow measurements in the deep-water area of the northern slope, South China Sea. Chinese J. Geophys. (in Chinese), 53(9): 2161-2170, doi: 10.3969/j.issn.0001-5733.2010.09.016.
[18]  Li Y X, Zhang J H, Zhou W, et al. 2010. Current tectonic movement of South China sea and its surrounding areas. Journal of Geodesy and Geodynamics (in Chinese), 30(3): 10-16.
[19]  Sun D S, Lin W R, Cui J W, et al. 2014. Three-dimensional in situ stress determination by anelastic strain recovery and its application at the Wenchuan Earthquake Fault Scientific Drilling Hole-1 (WFSD-1). Science China Earth Sciences, 57(6): 1212-1220.
[20]  Tang X Y, Hu S B, Zhang G C, et al. 2014. Geothermal characteristics and hydrocarbon accumulation of the northern marginal basins, South China Sea. Chinese J. Geophys. (in Chinese), 57(2): 572-585, doi: 10.6038/cjg20140221.
[21]  Tung Y L, Lawrence A L. 1995. Cenozoic plate reconstruction of Southeast Asia. Tectonophysics, 251(1-4): 85-139.
[22]  Wang J. 2012. Modern movement and deformation in the South China Sea show by GPS measurements and numerical simulation (in Chinese). Beijing: Thesis of Graduate School of Chinese Academy of Science.
[23]  Wang C H, Guo Q L, Song C K, et al. 2014. Stress build-up in the shallow crust before the Lushan earthquake based on the in-situ stress measurements. Chinese J. Geophys. (in Chinese), 57(1): 102-114, doi: 10.6038/cjg20140110.
[24]  Wang C Y, Chang L J, Ding Z F, et al. 2014. Upper mantle anisotropy and crust-mantle deformation pattern beneath the Chinese mainland. Science China Earth Sciences, 57(1): 132-143, doi: 10.1007/s11430-013-4675-5.
[25]  Yao B C, Wan L. 2010. Variation of the lithospheric thickness in the South China Sea area and its tectonic significance. Geology in China (in Chinese), 37(4): 888-899.
[26]  Zandt G, Ammon C J. 1995. Continental crust composition constrained by measurements of crustal Poisson''s ratio. Nature, 374(6518): 152-154.
[27]  Zhang J, Wang J Y. 2000a. The deep thermal characteristics of continental margin of northern South China Sea. Chinese Science Bulletin (in Chinese), 45(10): 1095-1100.
[28]  Zhang J, Wang J Y. 2000b. The geodynamic characteristics of the tectonic extension of the northern South China Sea continental margin. Science in China: Series D Earth Sciences (in Chinese), 30(6): 561-567.
[29]  Zhang Z J, Liu Y F, Zhang S F, et al. 2009. Crustal P-wave velocity structure and layering beneath Zhujiangkou-Qiongdongnan basins, the northern continental margin of South China Sea. Chinese J. Geophys. (in Chinese), 52(10): 2461-2471, doi: 10.3969/j.issn.0001-5733.2009.10.005.
[30]  Zhang Z J, Liu Y F, Zhang S F, et al. 2010. The depth-dependence of crustal extension beneath Qiongdongnan basin area and its tectonic implications. Chinese J. Geophys. (in Chinese), 53(1): 57-66, doi: 10.3969/j.issn.0001-5733.2010.01.007.
[31]  Zhang C Y, Wu M L, Liao C T. 2013. In-situ stress measurement and study of stress state characteristics of Jinchuan No.3 mine. Rock and Soil Mechanics (in Chinese), 34(11): 3254-3260.
[32]  Zhang C Y, Wu M L, Chen Q C, et al. 2014. Piezomagnetic in-situ stress monitoring and its application in the Longmenshan Fault Zone. Acta Geologica Sinica (English Edition), 88(5): 1592-1602.
[33]  Zhao B, Zhang S F, Li S L. 2011. Crustal density and composition models beneath Qiongdongnan basin. Chinese J. Geophys. (in Chinese), 54(1): 98-107, doi: 10.3969/j.issn.0001-5733.2011.01.011.
[34]  Zheng Y J, Huang Z X, Peng Y J. 2004. The upper mantle anisotropy and its tectonic implication in the continental margin of China. // Li J B, Gao S, eds. The Evolution of Sea Basin and Resources Effects of Chinese Margin Sea. 3rd Volume of the Series Researches on the Evolution of Chinese Margin Sea (in Chinese). Beijing: Oceanography Press, 3-8.
[35]  Zhong G J, Feng C M, Wei Z Q. 2012. The structural features of Xisha trough basin. Marine Geology & Quaternary Geology (in Chinese), 32(3): 63-68.
[36]  Zoback M D, Rummel F, Jung R, et al. 1977. Laboratory hydraulic fracturing experiments in intact and pre-fractured rock. International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts, 14(2): 49-58.
[37]  Zoback M L, Zoback M D, Adams J, et al. 1989. Global patterns of tectonic stress. Nature, 341(6240): 291-298.
[38]  Zoback M L. 1992. First-and second-order patterns of stress in the lithosphere: the World Stress Map Project. Journal of Geophysical Research, 97(B8): 111703-111728.
[39]  Wei B Z, Chung W Y. 1995. Strike-slip faulting on the northern margin of the South China Sea: Evidence from two earthquakes offshore of Hainan Island, China, in December 1969. Tectonophysics, 241(1-2): 55-66.
[40]  Wei X D, Zhao M H, Ruan A G, et al. 2011. Crustal structure of shear waves and its tectonic significance in the mid-northern continental margin of the South China Sea. Chinese J. Geophys. (in Chinese), 54(12): 3150-3160, doi: 10.3969/j.issn.0001-5733.2011.12.015.
[41]  Huang H B, Qiu X L, Xu Y, et al. 2011a. Crustal structure beneath the Xisha Islands of the South China Sea simulated by the teleseismic receiver function method. Chinese J. Geophys. (in Chinese), 54(11): 2788-2798, doi:.3969/j.issn.0001-5733.2011.11.009.
[42]  Huang H B, Qiu X L, Xu H L, et al. 2011b. Preliminary results of the earthquake observation and the onshore-offshore seismic experiments on Xisha Block. Chinese J. Geophys. (in Chinese), 54(12): 3161-3170, doi: 10.3969/j.issn.0001-5733.2011.12.016.
[43]  Ito T, Evans K, Kawai K, et al. 1999. Hydraulic fracture reopening pressure and the estimation of maximum horizontal stress. International Journal of Rock Mechanics and Mining Sciences, 36(6): 811-826.
[44]  Ito T, Funato A, Lin W, et al. 2013. Determination of stress state in deep subsea formation by combination of hydraulic fracturing in situ test and core analysis: A case study in the IODP Expedition 319. Journal of Geophysical Research: Solid Earth, 118(3): 1203-1215.
[45]  Ji L D, Zhang H W, Xiao F, et al. 2012. Absolute gravity measurements at Yongxing Island base station. Beijing Surveying and Mapping (in Chinese), (6): 54-56.
[46]  Ji L D, Zhang H W, Xiao F, et al. 2014. Repeated absolute gravity surveying at Yongxing Island base station. Science of Surveying and Mapping (in Chinese), 39(2): 11-13, 36.
[47]  Ji S C, Wang Q, Matthew H S. 2009. Composition and tectonic evolution of the Chinese continental crust constrained by Poisson''s ratio. Tectonophysics, 463(1-4): 15-30.
[48]  Lei C, Ren J Y, Tong D J. 2013. Geodynamics of the ocean-continent transition zone, northern margin of the South China Sea: Implications for the opening of the South China Sea. Chinese J. Geophys. (in Chinese), 56(4): 1287-1299, doi: 10.6038/cjg20130423.
[49]  Liao C T, Zhang C S, Wu M L, et al. 2003. Stress change near the Kunlun fault before and after the Ms8.1 Kunlun earthquake. Geophysical Research Letters, 30(20): 2027-2030, doi: 10.1029/2003GL018106.
[50]  Lin C S, Tang Y, Tan Y H. 2009. Geodynamic mechanism of dextral strike-slip of the western-edge faults of the South China Sea. Acta Oceanological Sinica (in Chinese), 31(1): 159-167.
[51]  Liu B M, Xia B, Li X X. 2006. Southeastern extension of the Red River fault zone (RRFZ) and its tectonic evolution significance in western South China Sea. Science in China: Series D Earth Sciences, 49(8): 839-850.
[52]  Liu Y X, Zhan W H, Qiu X L, et al. 1993. Study on recent tectonic stress field, recent crustal movement and crustal stability in South China Sea and its adjucent area. South China Journal of Seismology (in Chinese), 13(1): 11-21.
[53]  Lucy M F, William E H, Paul G S, et al. 2005. Constraining the extent of crust-mantle coupling in central Asia using GPS, geologic, and shear wave splitting data. Earth and Planetary Science Letters, 238(1-2): 248-268.
[54]  Qin G Q. 1987. A preliminary study on foraminiferal assemblages of well 1 Xiyong, Xisha Islands and their coral reef formation. Tropic Oceanology (in Chinese), 6(3): 10-20.
[55]  Qin X H, Zhang P, Feng C J, et al. 2014. In-situ stress measurements and slip stability of major faults in Beijing region, China. Chinese J. Geophys. (in Chinese), 57(7): 2165-2180, doi: 10.6038/cjg20140712.
[56]  Qiu X L, Ye S, Wu S, et al. 2001. Crustal structure across the Xisha Trough, northwestern South China Sea. Tectonophysics, 341(1-4): 179-193.
[57]  Qiu X L, Zeng G P, Xu Y, et al. 2006. The crustal structure beneath the Shidao Station on Xisha Islands of South China Sea. Chinese J. Geophys. (in Chinese), 49(6): 1720-1729.
[58]  Ruan A G, Li J B, Hao T Y, et al. 2006. Inversion of far-field seismic waves at Shidao Seismographic Station. Acta Oceanologica Sinica (in Chinese), 28(2): 29-52.
[59]  Ruan A G, Li J B, Lee C S, et al. 2012. Passive seismic experiment and ScS wave splitting in the southwestern subbasin of South China Sea. Chinese Science Bulletin, 57(25): 3381-3390, doi: 10.1007/s11434-012-5132-0.
[60]  Shen C Y, Xing L L, Tan H B, et al. 2012. The absolute gravity change in the eastern margin of the Qinghai-Tibetan Plateau before and after Yushu Ms7.1 earthquake in 2010. Progress in Geophys. (in Chinese), 27(6): 2348-2357, doi: 10.6038/j.issn.1004-2903.2012.06.010.
[61]  Shi X B, Zhou D, Zhang Y X. 2000. Continental margin of the Northern South China Sea lithospheric thermo rheological structure. Chinese Science Bulletin (in Chinese), 45(15): 1660-1665.
[62]  Shi X B, Zhou D, Qiu X L, et al. 2002. Thermal and rheological structures of the Xisha Trough, South China Sea. Tectonophysics, 351(4): 285-230.
[63]  Shi X, Zhou D, Qiu X, et al. 2002. Density, themal and rheological structures of Xisha Trough, South China Sea. Journal of Tropical Oceanography (in Chinese), 21(2): 23-31.
[64]  Shi X B, Qiu X L, Xia K Y, et al. 2003. Heat flow characteristics and its tectonic significance of South China Sea. Journal of Tropical Oceanography (in Chinese), 22(2): 63-73.
[65]  Silver P G. 1996. Seismic anisotropy beneath the continents: probing the depths of geology. Annual Review of Earth and Planetary Sciences, 24: 385-432.
[66]  Sun X M, Zhang X Q, Zhang G C, et al. 2014. Texture and tectonic attribute of Cenozoic basin basement in the northern South China Sea. Science China: Earth Sciences, 57: 1199-1211, doi: 10.1007/s11430-014-4835-2.
[67]  Wissmann G, Kudrass H, Hinz K. 1996. Continuing rifting on the South China margin. Geowissenschaften, 16(7-8): 310-312.
[68]  Wu M L, Zhang Y Q, Liao C T, et al. 2009. Preliminary results of in-situ stress measurements along the Longmenshan fault zone after the Wenchuan Ms8.0 earthquake. Acta Geologica Sinica (English Edition), 83(4): 746-753.
[69]  Wu M L, Liao C T. 2000. Stress measurements and study of stability of the Damao tunnel. Journal of Geomechanics (in Chinese), 6(2): 71-76.
[70]  Wu Z L, Li J B, Ruan A G, et al. 2012. Crustal structure of the northwestern sub-basin, South China Sea: Results from a wide-angle seismic experiment. Sci China Earth Sci., 55(1): 159-172, doi: 10.1007/s11430-011-4324-9.
[71]  Xu H L, Ye C M, Qiu X L, et al. 2010. Studies on the Binhai fault zone in the northern South China Sea by the deep geophysical exploration and its seismogenic structure. South China Journal of Seismology (in Chinese), 30(supp.): 10-18.
[72]  Xu M J, Wang L S, Liu J H, et al. 2005. Study on crust and upper mantle structure in Ailaoshan-Honghe faults zone from receiver functions. Science in China: Series D Earth Sciences (in Chinese), 35(8): 729-737.
[73]  Xu Y, Yang X T, Liu J H. 2013. Tomographic study of crustal velocity structures in the Yunnan region southwest China. Chinese J. Geophys. (in Chinese), 56(6): 1904-1914, doi: 10.6038/cjg20130613.
[74]  Yao B C, Zeng W J, Chen Y Z, et al. 1994. Xisha Trough of South China Sea-An ancient suture. Marine Geology & Quaternary Geology (in Chinese), 14(1): 1-10.

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