Abstract
Geological and geophysical data from the North China-Bohai Basin and “Basin and Range” Province were examined and compared. They are similar to each other in many respects. Surficial geological structures are characterized by a series of half-grabens with their one flank constituted by normal fault. Those extensional structures usually extend to a depth of 6–8 km. Therefore, the stress condition in the upper 8 km can be written as
wherex, y denote the directions of maximum compression and maximum tension on the horizontal plane, whilez signifies the vertical direction.
Some people think that this kind of stress condition exists through the entire crust in the extensional basin. However, the focal mechanisms of the earthquakes in the extensional basins with focal depths usually at 12–20 km are dominated by strike-slip faults. The stress condition in the focal regions can be expressed by
Geodetic measurements conducted before and after the Tangshan earthquake in 1976 and the Xingtai earthquake in 1966 showed that both horizontal and vertical surficial deformations with magnitudes of a similar order occurred during the earthquakes. The surficial deformations during the earthquakes can be explained by a summation of the motions produced by both stress fields in the upper crust and the middle crust.
Dynamical processes other than the homogeneous horizontal regional tectonic field are required to explain the vertical variation of the stress condition in the upper and middle crusts.
Evidence from the seismic refractions, reflections and the three-dimensional seismic tomography from both local earthquakes and teleseismic events provide convincing evidence that magmatic intrusions from the uppermost mantle to the middle crust occur near the hypocenters of both the Tangshan and Xingtai earthquakes.
The variation from the extensional stress regime at the upper crust to the compressional stress regime in the middle and lower crusts is considered to be the common feature in extensional basins. And the magmatic intrusions from the upper mantle to the middle crust observed in the extensional basin is suggested to be its genetic cause.
Numerical simulations of magmatic intrusion from the uppermost mantle to the middle crust were studied. Both the intruded compression and the thermal stress due to magmatic intrusion were considered, also the viscoelasticity of the middle and lower crusts were assumed. The results successfully explain the vertical variation of the stress condition in the crust and the process producing an extensional basin.
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References
Aki, K., andTsai, Y. (1972),Mechanism of Love-wave Excitation by Explosive Source, J. Geophys. Res.77, 1452–1475.
Allmendinger, R. W., et al. (1983),Cenozoic and Mesozoic Structure of the Eastern Basin and Range Province, Utah, from COCORP Seismic-reflection Data, Geology11, 532–536.
Allmendinger, R. W. et al. (1987),Overview of the COCORP 40°N, Transect, Western United States: The Fabric of an Orogenic Belt, Geol. Soc. Am. Bull.98 (3), 308–319.
Bathe, K. J.,Adina|Adinat|Adina-Plot, A Finite Element Program for Automatic Dynamic Increment Nonlinear Analysis (of Temperature), (Report AE81-1, AE81-2, AE81-3, Massachusetts Institute of Technology, 1981).
Bhaltacharje, S., andKoide, K. (1987),Theoretical and Experimental Studies of Mantle Upwelling, Penetrative Magmatism and Development of Rifts in Continental and Oceanic Crusts, Tectonophys.143, 13–30.
Bott, M. H. P.,Mechanism of subsidence at passive continental margins. InDynamics of Plate Interiors (eds. A. W. Ballyet al.) (Geodyn. Ser. Vol. 1, 1980) pp. 27–35.
Carter, N. L. (1976),Steady State Flow of Rocks, Rev. Geophys. Space Phys.14 (3), 301–360.
Chen, W. P., andNabelek, J. (1988),Seismogenic STrike-slip Faulting and the Development of the North China Basin, Tectonics7, 957–989.
Chun, W., andCipar, J. (1983),Source Modeling of the Hsing-Tai, China Earthquake of March, 1966, Phys. Earth Planet. Inter.33, 111–125.
Coward, M. P., Dewey, J. T., andHancock, P. L. (ed.),Continental Extensional Tectonics (Geol. Soc. London. Spec. Publ. {vn28}, 1987).
Dohr, G. P., andMeissner, R. (1975),Deep Crustal Reflections in Europe, Geophysics40, 25–39.
Doser, D. I. (1986),Earthquake Processes in the Rainbow Mountain-Fairview Peak-Dixie Valley, Nevada Region (1954–1959), J. Geophys. Res.91, 12572–12586.
Doser, D. I. (1988),Source Mechanisms of Earthquakes in the Nevada Seismic Zone (1915–1943) and Implications for Deformation in the Western Great Basin, J. Geophys. Res.93, 15001–15015.
Geodetic Survey Brigade, SSB (1975),Crustal Deformation Associated with the Xingtai Earthquake in March, 1966, Acta Geophys. Sinica18 (3), 153–163.
Goodwin, E. B., andTompson, G. A. (1988),The Seismically Reflective Crust beneath Highly Extended Terranes: Evidence for its Origin in Extension, Geol. Soc. Amer. Bull.100, 1616–1626.
Hauge, T. A. et al. (1987),Crustal Structure of Western Nevada from COCORP Deep Seismic Reflection Data, Geol. Soc. Am. Bull.98 (3), 320–329.
Hauser, E. C. et al. (1987), COCORPArizona Transect: Strong Crustal Reflections and Offset Moho beneath the Transition Zone, Geology15, 1103–1106.
Hebei Provincial Seismological Bureau,Xingtai Earthquake of 1966 (Seismological Press, Beijing, 1986), (in Chinese).
Hu, X., andLin, B. (1989),Stereographic Figures of the Time Variation in the Space Distribution of the Xingtai Earthquake and their Occurrence Process, Acta Seismol. Sinica11 (1), 1–11.
Klemperer, S. L. et al. (1986),The Moho in the Northern Basin and Range Province, Nevada, along the COCORP 40′N, Seismic-Relection Transect, Geol. Soc. Am. Bull.97, 603–618.
Kusznir, N. J., andBott, M. H. P. (1977),Stress Concentration in the Upper Lithosphere Caused by Underlying Visco-elastic Creep, Tectonophys.43, 247–256.
Kusznir, N. J., andPark, R. G.,Continental lithosphere strength: The critical role of lower crustal deformation InThe Nature of the LowerContinental Crust (eds. Fountain, D. M., Arculus, R., and Kay, R. W.) (Development in Geotectonics 23, Elsevier 1992) pp. 79–93.
Lauza, S., andde Voogd, B. (1987),Deep Seismic Reflection Evidence for the Role of Extension in the Evolution of Continental Crust, Geophys. J. R. Astr. Soc.89, 55–60.
Lin, Z. (1988),Reinterpretation of the Deep Seismic Sounding Data from Xingtai Epicentral Area in Yuan-Ji Profile, Master Thesis, Institute of Geology, SSB. (in Chinese).
Liu, W. (1987),Study of the Focal Process for the Xingtai Earthquake: A Review, Acta Seismol. Sinica9, (Suppl.), 451–464. Chinese with English abstract.
Lu, H., Zeng, R., Guo, J., andLin, Z. (1988),Results from Deep Seismic Reflection Tangshan Region, Acta Geophys. Sinica.,31 (1), 237–36 Chinese with English abstract.
M. X. et al. (1983),Meso-Cenzoic Taphrogeny and Extensional Tectonics in Eastern China, Acta Geol. Sinica57 (1), 22–32. Chinese with English abstract.
Ma, X. et al., Taphrogenesis through the Geological History of China. InResearch on Recent Crustal Movement (Institute of Geology, SSB, Seismol. Press, 1985) pp 5–16.
McCarthy, J., andThompson, G. A., 1988.,Seismic Imaging of Extended Crust with Emphasis on the Western United States, Geol. Soc. Am. Bull.100, 1361–1374.
McKenzie, D. (1978),Some Remarks on the Development of Sedimentary Basins., Earth Planet. Sci. Lett.10, 25–32.
Mooney, W. D., andMeissner, R.,Multigenetic origin of crustal reflectivity: A review of seismic profiling of the continental lower crust and Moho. InContinental Lower Crust (eds. Fountain, D. M., Arculus, R., and Kay, R. W.) (Development in Geotectonics 23, Elsevier 1992) pp. 45–80.
Nabelek, J., Chen, W., andYe, H. (1987),The Tangshan Earthquake Sequence and its Implications the Evolution of the North China Basin, J. Geophys. Res.92, 12615–12628.
Oliver, J. E., Dobrin, M., Kaufman, S., Meyer, R., andPhinney, R. (1976),Continuous Seismic Reflection Profiling of the Deep Basement, Hardeman County Texas, Geol. Soc. Am. Bull.87, 1537–1546.
Rogers, A. M., and other,The seismicity of Nevada and some adjacent parts of the Great Basin. InNeotectonics of North America (eds. Slemmons, D. B., Engdahl, E. R., Zoback, M. D., and Blackwell, D. D.) (Geol. Soc. Am. 1991) pp. 153–184.
Shedlock, K. M., andRoecher, S. W. (1987),Elastic Wave Velocity Structure of the Crust and Mantle Beneath the North China Basin, J. Geophys. Res.92 (B9), 9327–9350.
Smith, R. B., andBruhn, R. L. (1984),Intraplate Extensional Tectonics of the Eastern Basin and Range: Inferences on Structural Style from Seismic Reflection Data, Regional Tectonics and Thermal Mechanical Models of Brittle-ductile deformation, J. Geophys. Res.89, 5733–5762.
Stacey, F. D. (1977),A Thermal Model of the Earth, Phys. Earth Planet. Int.15, 341.
State Seismological Bureau,Tangshan Earthquake of 1976 (Seismological Press, Beijing 1982) (in Chinese).
Teng, J. et al. (1975),Crustal Structure of the Central Part of North China Plain and the Xingtai Earthquake (II), Acta Geophys. Sinica18, (3), 196–207. Chinese with English abstract.
Thompson, G. A. et al., Geophysics of the western Basin and Range province, InGeophysical Framework of the Continental United States (eds. Pakiser, L. C., and Mooney, W. D.) (Geol. Soc. Am. Memoir172, 1989) pp. 177–204.
Wang, C., Wang, G., andLin, Z. et al. (1993),A Study on Fine Crustal Structure in Xingtan Earthquake Area Based on Deep Seismic Reflection Profiling, Acta Geophys. Sinica36, (4), 445–452. Chinese with English abstract
Wang, C., Zhang, X., Lin, Z., and Li, X. (1994a),Characteristic of Crustal Structure in Sulu Fault Basin and its Vicinity, Acta Seismol. Sinica16 (3) Chinese with English abstract.
Wang, C., Zhang, X., Wu, O., and Zhu, Z. (1994b),Seismic Evidence of Detachment in North China Basin, Acta Geophys. Sinica37 (5). Chinese with English abstract.
Wang, C., Zhang, X., Zhao, J. andZhu, Z.,Study of fine structure in Xingtai earthquake knowledge of the seismotectonics InAdvances in Solid Earth Geophysics in China (eds.Chen,Y. et al.) (Marine Press, Beijing 1994c) pp. 31–40. Chinese with English abstract.
Wang, X. (1987),Crustal Hot Bodies and Seismogenetics, Doctoral Thesis, Institute of Geophysics SSB (in Chinese).
Warner, M. (1990),Basalts, Water or Shear Zones in the Lower Continental Crust Tectonophys.173, 163–174.
Wernicke, B. (1985),Uniform-sense Normal Simple Shear of the Continental Lithosphere. Can. J. Earth. Sci.22, 108–125.
Yang, C. (1982),A Disscussion on the Geological Background of Xingtai Earthquake, Earthquake5, 29–32 (in Chinese).
Ye, H. et al. (1985),The North China Basin: An Example of a Multiply Rifted Intraplate Basin, Tectonics4, 153.
Zeng, R., Zhang, S., Zhou, H., andHe, Z. (1985),Crustal Structure of Tangshan Epicentral Region and its Relation to the Seismogenic Process of Continental Earthquake, Acta Seismol. Sinica7 (2), 125–142. Chinese with English abstract.
Zeng, R., Lu, H., andDing, Z. (1988),Seismic Refraction, and Reflection Profiling across Tangshan Epicentral Region and their Implication to Seismogenic Processes, Acta Geophys. Sinica31, (4), 383–397. Chinese with English abstract.
Zeng, R., Zhu, L., He, Z., Ding, Z., andSun, W. (1991),A Seismic Source Model of the Large Earthquakes in North China Extensional Basin and Discussions of the Genetic Processes of the Extensional Basin and Earthquakes, Acta Geophys. Sinica34, (3), 288–300. Chinese with English abstract.
Zhang, D., Gu, X., andZeng, R. (1994)Numerical Modeling of the Dynamics in North China Basin, Acta Seismol. Sinica, submitted.
Zhang, D., andZeng, R. (1994),Numerical Simulation of the Detachment in North China Basin, Acta Seismol. Sinica, submitted.
Zhang, Z., et al. (1980),The Fracture Processes of the Tangshan Earthquake and its Mechanical Analyis, Acta Seismol. Sinica2, (2), 111–129. Chinese with English abstract.
Zhang, A.,Analysis of ground deformation. InTangshan Earthquake of 1976 (Seismological Press, Beijing 1982) pp. 131–170 (in Chinese).
Zhu, L., Zeng, R., andLiu, F., (1990b)A New Model Parameterization Method for Inversion of 3-Dimensional Velocity Structure, Acta Geophys. Sinica33 (1), 34–43. Chinese with English abstract.
Zhu, L., Zeng, R., andLiu, F. (1990b),Three-dimensional P-wave Velocity Structure under the Beijing Network Area, Acta Geophys. Sinica33, (3), 253–263. Chinese with English abstract.
Zoback, M. L. (1989),State of Stress and Modern Deformation of the Northern Basin and Range Province, J. Geophys. Res.94 (B6), 7105–7128.
Zoback, M. L., andZoback, M. D.,Tectonic stress field of the continental United States. InGeophysical Framework of the Continental United States (eds. Pakiser, L. D., and Mooney, W. D.) (Geol. Soc. Am. Memoir172, 1989) pp. 523–539.
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Zeng, RS., Wang, Cy. & Zhang, Dn. On the dynamics of extensional basin. PAGEOPH 145, 579–603 (1995). https://doi.org/10.1007/BF00879590
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DOI: https://doi.org/10.1007/BF00879590