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川滇地块古新统宁蒗组磁组构特征及构造意义

DOI: 10.6038/cjg20140117, PP. 199-213

Keywords: 磁组构,川滇地块,构造旋转,古应力

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Abstract:

对川滇地块程海断裂附近的宁蒗地区古新统宁蒗组地层进行了详细的磁组构研究,沿战河-西布河布置了22个采点(钻取287块样品),综合分析表明研究区内存在四种磁组构类型,分别为初始变形磁组构和铅笔状磁组构以及介于上述两者之间的两种过渡型磁组构.研究区西侧(采点1—9)K1轴优势方向为近NNE-SSW方向,东侧(采点13—22)K1轴优势方向则为近S-N向,K1轴方向的突然变化可能与研究区内的隐伏断层活动有关.另外,磁组构也可以很好判断断层所夹持块体之间的相对旋转运动.将两组K1轴优势方向经过旋转校正之后,发现研究区内中-晚始新世时古应力方向为近E-W向,该应力方向主要与新生代印欧碰撞有关.此外,E-W向的古应力场明显不同于现今的近S-N向的应力场方向,这可能与印欧碰撞后青藏高原从前期的挤压缩短阶段进入到后期的E-W向伸展阶段有关.

References

[1]  Cogné J P. 2003. PaleoMac: a MacintoshTM application for treating paleomagnetic data and making plate reconstructions. Geochem. Geophys. Geosyst., 4(1): 1007.
[2]  Crimes T P, Oldershaw M A. 1967. Palaeocurrent determinations by magnetic fabric measurements on the Cambrian rocks of St. Tudwal''s Peninsula, North Wales. Geological Journal, 5(2): 217-232.
[3]  Dvo?ák J, Hrouda F. 1975. The reflection of the deeper structure of the Artmanov-Osoblaha block (Nízky Jeseník Mountains Czechoslovakia) in the magnetic anisotropy and deformation history of overlying Paleozoic sediments. Věstn úst?ed. ústavu Geol., 50(5): 285-296.
[4]  Eldredge S, Bachtadse V, Van der Voo R. 1985. Paleomagnetism and the orocline hypothesis. Tectonophysics, 119(1-4): 153-179.
[5]  Freund R. 1970. Rotation of strike slip faults in Sistan, southeast Iran. The Journal of Geology, 78(2): 188-200.
[6]  Gilley L D, Harrison T M, Leloup P H, et al. 2003. Direct dating of left-lateral deformation along the Red River shear zone, China and Vietnam. Journal of Geophysical Research, 108(B2): 2127.
[7]  Graham J W. 1949. The stability and significance of magnetism in sedimentary rocks. Journal of Geophysical Research, 54(2): 131-167.
[8]  Graham J W. 1966. Significance of magnetic anisotropy in Appalachian sedimentary rocks. Geophys. Monogr. Ser., 10: 627-648.
[9]  Gray M B, Mitra G. 1993. Migration of deformation fronts during progressive deformation: evidence from detailed structural studies in the Pennsylvania Anthracite region, U.S.A. Journal of Structural Geology, 15(3-5): 435-449.
[10]  Guarnieri P. 2004. Structural evidence for deformation by block rotation in the context of transpressive tectonics, northwestern Sicily (Italy). Journal of Structural Geology, 26(2): 207-219.
[11]  Hamilton N, Loveland P. 1967. Some preliminary susceptibility anisotropy measurements on greywackes from the trinity peninsula series of Graham Land. Br. Antarc. Surv. Bull., (11): 59-71.
[12]  Hamilton N, Rees A I. 1970. Magnetic fabric of sediments from the shelf at La Jolla (California). Marine Geology, 9(2): M6-M11.
[13]  Hamilton N, Rees A I. 1971. The anisotropy of magnetic susceptibility of the Franciscan rocks of the Diablo Range, Central California. Geologische Rundschau, 60(3): 1103-1124.
[14]  Hu S Y, Yan G L. 1992. Effects of the anisotropy of magnetic susceptlbllity upon the remanent magnetization deviation. Progress in Geophysics, 7(1): 57-66.
[15]  Hnat J S, Van der pluijm B A, Van dee Voo R, et al. 2008. Differential displacement and rotation in thrust fronts: A magnetic, calcite twinning and palinspastic study of the Jones Valley thrust, Alabama, US Appalachians. Journal of Structural Geology, 30(6): 725-738.
[16]  Hopkinson J. 1889. Magnetic and other physical properties of iron at a high temperature. Philosophical Transactions of the Royal Society of London. A., 180: 443-465.
[17]  Hrouda F. 1982. Magnetic anisotropy of rocks and its application in geology and geophysics. Surveys in Geophysics, 5(1): 37-82.
[18]  Huang B C, Piper J D A, Zhu R T, et al. 2006. Magnetostratigraphic study of the Kuche Depression, Tarim Basin, and Cenozoic uplift of the Tian Shan Range, Western China. Earth Planet. Sci. Lett., 251(3-4): 346-364.
[19]  Jelinek V. 1981. Characterization of the magnetic fabric of rocks. Tectonophysics, 79(3-4): T63-T67.
[20]  Jia D, Chen Z X, Luo L, et al. 2008. Magnetic and finite strain of the fault-related folds: Instance of the Chuanxi Minjiang thrust structural. Progress in Natural Science, 17(2): 188-195.
[21]  Kan R J, Wang S J, Huang K, et al. 1983. Modern tectonic stress field and relative motion of intraplate block in southwestern China. Seismology and Geology, 5(2): 79-90.
[22]  Kanamatsu T, Herrero-Bervera E. 2006. Anisotropy of magnetic susceptibility and paleomagnetic studies in relation to the tectonic evolution of the Miocene-Pleistocene accretionary sequence in the Boso and Miura Peninsulas, central Japan. Tectonophysics, 418(1-2): 131-144.
[23]  Kligfield R, Lowrie W, Hitt A, et al. 1983. Effect of progressive deformation on remanent magnetization of Permian redbeds from the Alpes Maritimes (France). Tectonophysics, 98(1-2): 59-85.
[24]  Larrsoanna J C, Pueyo E L, Pares J M. 2004. An integrated AMS, structural, palaeo- and rock-magnetic study of Eocene marine marls from the Jaca-Pamplona basin (Pyrenees, N Spain); new insights into the timing of magnetic fabric acquisition in weakly deformed mudrocks. Geological Society, London, Special Publications, 238(1): 127-143.
[25]  Leloup P H, Lacassin R, Tapponnier P, et al. 1995. The Ailao Shan-Red River shear zone (Yunnan, China), Tertiary transform boundary of Indochina. Tectonophysics, 251(1-4): 3-10, 13-84.
[26]  Li Y X, Ali J R, Chan L S, et al. 2005. New and revised set of Cretaceous paleomagnetic poles from Hong Kong: implications for the development of southeast China. Journal of Asian Earth Sciences, 24(4): 481-493.
[27]  Lowrie W. 1990. Identification of ferromagnetic minerals in a rock by coercivity and unblocking temperature properties. Geophysical Research Letters, 17(2): 159-162.
[28]  Luo L, Jia D, Li Y Q, et al. 2008. Magnetic fabric of weak deformed sediments under the tectonic superposition: A case of the Northwest Sichuan Basin. Acta Geologica Sinica, 82(6): 850-856.
[29]  McCaig A, McClelland E. 1992. Palaeomagnetic techniques applied to thrust belts. Thrust Tectonics. London: Chapman and Hall., 209-216.
[30]  Parés J M. 2004. How deformed are weakly deformed mudrocks? Insights from magnetic anisotropy. // Martin-Hernández F, Luneburg C M, Aubourg C, et al., eds. Magnetic Fabrics: Methods and Applications. Geological Society, London, Special Publications., 238: 191-203.
[31]  Peacock D C P, Anderson M W, Morris A, et al. 1998. Evidence for the importance of ''small'' faults on block rotation. Tectonophysics, 299(1-3): 1-13.
[32]  Pueyo Anchuela ó, Pueyo E L, Pocoví Juan A, et al. 2012. Vertical axis rotations in fold and thrust belts: Comparison of AMS and paleomagnetic data in the Western External Sierras (Southern Pyrenees). Tectonophysics, 532-535: 119-133.
[33]  Qian X D, Qin J Z, Liu L F. 2011. Study on recent tectonic stress field in Yunnan region. Seismology and Geology, 33(1): 91-106.
[34]  Randall K, Lamb S, Niocaill C M. 2011. Large tectonic rotations in a wide zone of Neogene distributed dextral shear, northeastern South Islan, New Zealand. Tectonophysics, 509(3-4): 165-180.
[35]  Wan T F, Cao R P. 1992. Tectonic events and stress fields of Middle Eocene-Early Pleistocene in China. Geoscience, 6(3): 275-285.
[36]  Allerton S. 1998. Geometry and kinematics of vertical-axis rotations in fold and thrust belts. Tectonophysics, 299(1-3): 15-30.
[37]  Apotria T G. 1995. Thrust sheet rotation and out-of-plane strains associated with oblique ramps: An example from the Wyoming salient U.S.A. Journal of Structural Geology, 17(5): 647-662.
[38]  Aubourg C, De Lamotte D F, Poisson A, et al. 1997. Magnetic fabrics and oblique ramp-related folding: A case study from the western Taurus (Turkey). Journal of Structural Geology, 19(8): 1111-1120.
[39]  Bakhtari H R, de Lamotte D F, Aubourg C, et al. 1998. Magnetic fabrics of tertiary sandstones from the Arc of Fars (Eastern Zagros, Iran). Tectonophysics, 284(3-4): 299-316.
[40]  Blow R A, Hamilton N. 1978. Effect of compaction on the acquisition of a detrital remanent magnetization in fine-grained sediments. Geophysical Journal of the Royal Astronomical Society, 52(1): 13-23.
[41]  Borradaile G, Henry B. 1997. Tectonic applications of magnetic susceptibility and its anisotropy. Earth-Science Reviews, 42(1-2): 49-93.
[42]  Bureau of Geology and Mineral Resources of Yunnan Province. 1989. Regional Geology of Yunnan Province. Beijing: Geology Publishing House.
[43]  Chung S L, Lee T Y, Lo C H, et al. 1997. Intraplate extension prior to continental extrusion along the Ailao Shan-Red River shear zone. Geology, 25(4): 311-314.
[44]  Cifelli F, Rossetti F, Mattei M, et al. 2004. An AMS, structural and paleomagnetic study of Quaternary deformation in eastern Sicily. Journal of Structural Geology, 26(1): 29-46.
[45]  Cogné J P, Perroud H. 1985. Strain removal applied to paleomagnetic directions in an orogenic belt: the Permian red slates of the Alpes Maritimes, France. Earth and Planetary Science Letters, 72(1): 125-140.
[46]  Cogné J P, Bonhommet N, Kropacek V, et al. 1991. Paleomagnetism and magnetic fabric of the deformed redbeds of the Cap de la Chèvre formation, Brittany, France. Physics of the Earth and Planetary Interiors, 67(3-4): 374-388.
[47]  Replumaz A, Lacassin R, Tapponnier P, et al. 2001. Large river offsets and Plio-Quaternary dextral slip rate on the Red River fault (Yunnan, China). Journal of Geophysical Research, 106(B1): 819-836.
[48]  Royden L H, Burchfiel B C, Vander Hilst R D. 2008. The geological evolution of the Tibetan Plateau. Science, 321(5892): 1054-1058.
[49]  Schreurs G. 1994. Experiments on strike-slip faulting and block rotation. Geology, 22(6): 567-570.
[50]  Shen Z K, Lü L N, Wang M, et al. 2005. Contemporary crustal deformation around the southeast borderland of the Tibetan Plateau. Journal of Geophysical Research, 110(B11): B11409.
[51]  Socquet A, Pubellier M. 2005. Cenozoic deformation in western Yunnan (China-Myanmar border). Journal of Asian Earth Sciences, 24(4): 495-515.
[52]  Somma R. 2006. The south-western side of the Calabrian Arc (Peloritani Mountains): Geological, structural and AMS evidence for passive clockwise rotations. Journal of Geodynamics, 41(4): 422-439.
[53]  Tarling D, Hrouda F. 1993. Magnetic Anisotropy of Rocks. London: Springer.
[54]  Vasiliev I, Matenco L, Krijgsman W. 2009. The syn-and post-collisional evolution of the Romanian Carpathian foredeep: New constraints from anisotropy of magnetic susceptibility and paleostress analyses. Tectonophysics, 473(3-4): 457-465.
[55]  Wang E, Burchfiel B C, Royden L H, et al. 1998. Late Cenozoic Xianshuihe-Xiaojiang, Red River, and Dali fault systems of southwestern Sichuan and central Yunnan, China. Geological Society of America, 327: 1-108.
[56]  Wang S J, Fu H, Wei A M, et al. 2001. Variation of moderate strong source mechanism before great earthquake with M7 in Sichuan Yunnan Area. Journal of Seismological Research, 24(2): 99-108.
[57]  Xiang H F, Guo S M, Ran Y K, et al. 1986. Recent tectonic stress field in the Northwest of the Yunnan province. Seismology and Geology, 8(4): 15-23.
[58]  Zhang H F, Tong Y B, Wang H, et al. 2012. Early Cretaceous paleomagnetic results of the Simao Area in the Indochina Block and its tectonic implications. Acta Geologica Sinica, 86(6): 923-939.
[59]  Zhang S H, Zhou X Q, Liu X F. 1999. Some problems in application of anisotropy of susceptibility to structural deformation analysis. Journal of Mineralogy and Petrology, 19(4): 93-97.
[60]  Zhong D L, Ding L. 1996. Discussion of the mechanism and process of the uplift of the Qinghai-Tibet plateau. Science in China (Series D), 26(4): 289-295.

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