北天山北缘构造剖面测量及多期构造变形
详细信息 本馆镜像全文    |  推荐本文 | | 获取馆网全文
摘要
天山北缘为典型的大陆内部活动构造特征,发育准噶尔盆地南缘逆冲带,主要表现为新生代时期形成的多排平行山体的背斜和逆冲断层。为了详细研究该区主要构造变形特征和变形形成时间,2005年我们对天山北缘进行了详细的地表地质剖面测量,之后进行了多年地表地质区域调查,落实了关键砾岩地层时代,充分结合卫星遥感影像资料、二维三维地震剖面和钻井测井资料,应用断层相关褶皱理论,完成了一条近SN向的长度50km的金钩河—安集海河构造地质大剖面。野外观察和地质测量以及生长地层和生长地层不整合分析表明,安集海深层背斜初始形成时间为中新世早期,在第四纪西域组(Q1x)、乌苏群(Q2)和第四纪中晚期(Q4)最终定型的浅表背斜,深层为断层转折褶皱和中浅层反冲的楔形构造叠加组合而成;霍尔果斯深层背斜初始形成时间为中新世晚期,在第四纪中晚期Q4最终定型,构造样式为深层断层转折褶皱、中深层楔形构造和浅层断层扩展背斜叠加组合而成。区域地质调查发现一条近东西走向285°,发育在中生界地层的准南走滑断层,该断层位于准南边界逆冲断裂以北,形成时间最晚(Q4)。根据准南安集海背斜、霍尔果斯背斜和准南边界逆冲断裂初始形成时间,可以认为准南构造初始逆冲次序为后展式,然后整个逆冲带从第四纪早期西域组晚期开始一直活动到现今。
The Tianshan Mountains is characteristic of a typical intracontinental activity.The northern piedmonts consist of three main fold and fault belts,which are mainly fault-related folds that deformed the strata from the south Junggar Basin.Understanding their Cenozoic Uplift history thus has a bearing on the understanding of the mountain building process and petroleum explorations in Western China in general,and on how deformation has occurred under the influence of the India-Asia collision in particular.In order to help decipher the actual structural interpretation of the south Junggar Basin and the styles of deformation,we measured strikes and dips of strata at every spot in detail by the use of 200m-long lining rope or GPS along a 50 km section at the Jinggou River(Xinjiang Province) in the year 2005,and regional field survey for many years after 2005.Along with satellite Landsat ETM(Enhanced Thematic Mapper) and interpretation of 2D,3D seismic data and well data,we have completed an approximately SN-directed 50km-long geological section by using the fault-related fold theories.Our field investigations indicate that the growth strata are present in the north limb of the Anjihai anticlines,and the growth unconformities interpreted by the seismic lines are present in both limbs of the anticline.The growth strata in the south limb of the anticline show us that it was originated in about the Early Miocene,ultimately formed during the Early Quaternary Xiyu Formation(Q1x) and Wusu Group(Q2) and the Middle-Late Quaternary(Q4),which was composed of the deeper fault-bend fold,and shallower wedge-shaped back-thrust fault-bend fold.The Huo'erguosi anticlines was originated in about the Late Miocene,ultimately formed during the Middle-Late Quaternary(Q4),which was composed of the deeper fault-bend fold,the middle wedge-shaped back-thrust fault-bend fold and the shallower fault-propagating fold.It is very clear that an approximately EW-285°striking strike-slip fault was discovered by our regional geological survey and satellite Landsat ETM interpretation.The Fault is located north to the south Junggar boundary thrust fault,formed in the Late Quaternary,which dislocated the Late Quaternary alluvial plains.Based on the times of three main folds,we conclude that the south Junggar fault and fold belt is of a break-back thrust sequence(new thrusts developed in the hangingwall),still being active from the early quaternary to present.
引文
[1]詹艳,赵国泽,汤吉,等.新疆玛纳斯大震区地壳深部的电性结构[J].地震地质,1999,21(2):159-167.
    [2]马杏垣.中国岩石圈动力学地图集[M].北京:中国地图出版社,1989:285.
    [3]杨晓平,邓起东,冯先岳.北天山吐谷鲁活动逆断裂-背斜几何学、运动学特征研究[M]∥活动断裂研究编委会.活动断裂研究(5).北京:地震出版社,1996:42-54.
    [4]邓起东,冯先岳,尤惠川,等.新疆独山子—安集海活动逆断裂-褶皱带的变形特征及其形成机制[M]∥活动断裂研究编委会.活动断裂研究(1).北京:地震出版社,1991:17-36.
    [5]邓起东,冯先岳,张培震,等.天山活动构造[M].北京:地震出版社,2000:400.
    [6]张培震,邓起东.盲断裂,褶皱地震与新疆1906年玛纳斯地震[J].地震地质,1994,16(3):193-204.
    [7]Avouac J P,Tapponnier P,Bai M,et al.Active thrusting and folding along the northern Tien Shan and late Cenozoic rotation of the Tarim relative to Dzungaria and Kazakhsatan[J].Journal of Geophysical Research,1993,98(4):6755-6804.
    [8]Burchfiel B C,Brown E T,Deng Q D,et al.Crustal short-ening on the margins of the Tien Shan,Xinjiang,China[J].International Geology Review,1999,41:665-700.doi:10.1080/00206819909465164.
    [9]Molnar P,Brown E T,Burchfiel B C,et al.Quaternary cli-mate change and the formation of river terraces across grow-ing anticlines on the north flank of the Tianshan,China[J].Journal of Geology,1994,102:583-602.
    [10]杨晓平,邓起东,张培震,等.利用阶地变形资料研究北天山吐谷鲁逆断裂-背斜带晚更新世以来的褶皱变形特征[M]∥国家地震局地质研究所.活动断裂研究(4).北京:地震出版社,1995:46-62.
    [11]杨晓平,顾梦林,孙振国,等.1906年新疆玛纳斯大震区的多层次逆冲构造与深部结构[J].地震地质,2002,24(3):303-314.
    [12]Brown E T,Bourles D L,Burchfield B C,et al.Estimation of slip rates in the southern Tien Shan using cosmic ray expo-sure dates of abandoned alluvial fans[J].Geological Society of America Bulletin,1998,110:377-386.
    [13]Fu B H,Lin A M,Kano K,et al.Quaternary folding of the eastern Tianshan,northwest China[J].Tectonophysics,2003,369:79-101.
    [14]Charreau J,Chen Y,Gilder S,et al.Magnetostratigraphy and rock magnetism of the Neogene Kuitun He section(Northwest China):Implications for Late Cenozoic uplift of the Tianshan mountains[J].Earth and Planetary Science Let ters,2005,230:177-192.
    [15]Charreau J,Gilder S,Chen Y,et al.Magnetostratigraphy of the Yaha section,Tarim Basin(China):11Ma acceleration in erosion and uplift of the Tianshan Mountains[J].Geology,2006,34:181-184.
    [16]Sun J M,Zhu R X,Bowler J.Timing of the Tianshan Mountains uplift constrained by magnetostratigraphic analysis of molasse deposits[J].Earth and Planetary Science Letters,2004,219:239-253.
    [17]Sun J M,Yang L,Zhang Z Q,et al.Magnetostratigraphic data on Neogene growth folding in the foreland basin of the southern Tianshan Mountains[J].Geology,2009,37(11)1051-1054.
    [18]He D F,Suppe J,Yang G,et al.Guide book for field trip in south and north Tianshan foreland basin,Xinjiang Uygur Autonomous Region,China[C]∥Proceedings of Internation al Conference on Theory and Application of Fault-Related Folding in Foreland Basins.Beijing,2005:1-77.
    [19]Daeron M,Avouac J P,Charreau J.Modeling the shortening history of a fault tip fold using structural and geomorphic re cords of deformation[J].Journal of Geophysics Research,2007,112(3):1-19.doi:10.1029/2006JB004460.
    [20]张志诚,郭召杰,吴朝东,等.天山北缘侏罗系地层热历史演化及其地质意义:磷灰石裂变径迹和镜质体反射率证据[J].岩石学报,2007,23(7):1683-1695.
    [21]张良臣,吴乃元.天山地质构造及演化史[J].新疆地质,1995,3(3):1-14.
    [22]刘和甫,梁慧社,蔡立国,等.天山两侧前陆冲断系构造样式与前陆盆地演化[J].地球科学,1994,19(6):727-740.
    [23]邓起东,冯先岳,张培震,等.乌鲁木齐山前坳陷逆断裂-褶皱带及其形成机制[J].地学前缘,1999,6(4):191-202.
    [24]Suppe J,Chou G T,Hook S C.Rates of folding and faulting determined from growth strata[M]∥McKlay K R.Thrust Tectonics.New York:Chapman Hall,1992:105-121.
    [25]Charreau J,Avouac J P,Chen Y,et al.Miocene to present kinematics of fault-bend folding across the Huerguosi anti cline,northern Tianshan(China),derived from structural,seismic,and magnetostratigraphic data[J].Geology,2008,36(11):871-874.
    [26]Charreau J,Chen Y,Gilder S,et al.Neogene uplift pulses of the Tianshan mountains observed in the magnetic record of the Jingou River section(Northwest China)[J].Tectonics,2009,28.doi:10.1029/2007TC002137.
    [27]顾功叙.中国地震目录[H].北京:科学出版社,1983:334
    [28]Molnar P,Tapponnier P.Cenozoic tectonics of Asia:Effects on a continental collision[J].Science,1975,189:419-426.
    [29]Tapponnier P,Molnar P.Active faulting and Cenozoic tec-tonics of the Tien Shan,Mongolia and Baykal regions[J].Journal of Geophysics Research,1979,84:3425-3459.
    [30]Molnar P,England P.Late Cenozoic uplift of mountain ran-ges and global climate change:Chicken or egg[J].Nature,1990,346:29-34.
    [31]Sobel R E,Dumitru T A.Thrusting and exhumation around the margins of the western Tarim basin during the India-Asia collision[J].Journal of Geophysical Research,1997,102:5043-5063.
    [32]Molnar P,Stock J M.Slowing of Indias convergence with Eurasia since20Ma and its implications for Tibetan mantle dynamics[J].Tectonics,2009,28:Tc3001.doi:19.1029/2008TC002271.
    [33]Hendrix M S,Dumitru T A,Graham A S.Late Oligocene-Early Miocene unroofing in the Chinese Tian Shan:An early effect of the India-Asia collision[J].Geology,1994(22):487-490.
    [34]Dumitru T A,Zhou D,Chang E,et al.Uplift,exhumation,and deformation in the Chinese Tian Shan[C]∥Hendrix M S,Davis G A.Paleozoic and Mesozoic Tectonic Evolution of Central and Eastern Asia:From Continental Assembly to In-tracontinental Deformation.Geological Society of America Memoir,2001,194:71-99.
    [35]Allen M B,Windley B F,Zhang C,et al.Basin evolution within and adjacent to the Tien Shan range,NW China[J].Journal of Geological Society,London,1991,148:369-378.
    [36]Allen M B,Windley B F,Zhang C.Paleozoic collisional tec-tonics and magmatism of the Chinese Tien Shan,central Asia[J].Tectonophysics,1992,220:89-115.
    [37]Métivier F,Gaudemer Y.Mass transfer between eastern Tian Shan and adjacent basins(Central Asia):Constraints on regional tectonics and topography[J].Geophysical Journal International,1997,128:1-17.
    [38]Windley B F,Allen M B,Zhang C,et al.Paleozoic accretion and Cenozoic redeformation of the Chinese Tianshan Range,central Asia[J].Geology,1990,18:128-131.
    [39]Yin A,Nie S.A Phanerozoic palinspastic reconstruction of China and its neighboring region[M]∥Yin A,Harrison T M.Tectonic Evolution of Asia.London:Cambridge Univer-sity Press,1996:666.
    [40]Yin A,Nie S,Craig P,et al.Late Cenozoic tectonic evolu-tion of the southern Chinese Tian Shan[J].Tectonics,1998,17:1-27.
    [41]Huang B C,Piper J D A,Peng S T,et al.Magnetostrati-graphic study of the Kuche Depression,Tarim Basin,and Ce-nozoic uplift of the Tian Shan Range,Western China[J].Earth and Planetary Science Letters,2006,251:346-364.
    [42]Bullen M E,Burbank D W,Garver J I.Building the Northern Tien Shan:Integrated thermal,structural,and topographic constraints[J].Journal of Geology,2003,111:149165.
    [43]Bullen M E,Burbank D W,Garver J I,et al.Late Cenozoic tectonic evolution of the northwestern Tien Shan:New age estimates for the initiation of mountain building[J].Geological Society of America Bulletin,2001,113(12):544-1559.
    [44]Sobel E,Chen J,Heermance R V.Late Oligocene-Early Miocene initiation of shortening in the Southwestern Chinese Tian Shan:Implications for Neogene shortening rate variations[J].Earth and Planetary Science Letters,2006,247:70-81.
    [45]Sun J M,Xu Q H,Huang B C.Late Cenozoic magnetochronology and paleoenvironmental changes in the northern foreland basin of the Tianshan Mountains[J].Journal of Geophysical Research,2007,112(B04101).doi:10.1029/2006JB003890.
    [46]Bullen M E,Burbank D W,Garver J I,et al.Late Cenozoic tectonic evolution of the northwestern Tian Shan:New estimates for the initiation of mountain building[J].Geological Society of America Bulletin,2001,113:1544-1559.
    [47]Charreau J,Chen Y,Gilder S,et al.Comment on“Magnetostratigraphic study of the Kuche Depression,Tarim Basin,and Cenozoic uplift of the Tian Shan Range,Western China”[J].Baochun Huang,John D.A.Piper,Shoutao Peng,Tao Liu,Zhong Li,Qingchen Wang,Rixiang Zhu[Earth and Planetary Science Letters,2006,doi:10.1016/j.epsl.2006.09.020].Earth and Planetary Science Letters,2008,268:325-329.doi:10.1016/j.epsl.2008.01.025.
    [48]Charreau J,Gumiaux C,Avouac J P,et al.The Neogene Xiyu Formation,a diachronous prograding gravel wedge at front of the Tianshan:Climatic and tectonic implications[J].Earth and Planetary Science Letters,2009,287(3/4):298310.
    [49]Gilder S A,Gomez J,Chen Y,et al.A new paleogeographic configuration of the Eurasian landmass resolves a paleomagnetic paradox of the Tarim Basin(China)[J].Tectonics,2008,27:TC1012.doi:10.1029/2007TC002155.
    [50]Chen J,Burbank D W,Scharer K M,et al.Magnetochronology of the Upper Cenozoic strata in the southwestern Chinese Tian Shan:Rates of Pleistocene folding and thrusting[J].Earth and Planetary Science Letters,2002,195:113130.
    [51]Sun J M,Zhu R X,An Z S.Tectonic uplift in the northernTibetan Plateau since13.7Ma ago inferred from molasses de-posits along the Altyn Tagh Fault[J].Earth and Planetary Science Letters,2005,235:641-653.
    [52]Chen J,Heermance R,Burbank D W,et al.Quantification of growth and lateral propagation of the Kashi anticline,southwest Chinese Tian Shan[J].Journal of Geophysical Re-search,B:Solid Earth,2007,112:BO3516.doi:10.1029/2006JB004345.
    [53]Heermance R V,Chen J,Burbank D W,et al.Chronology and tectonic controls of Late Tertiary deposition in the south-western Tian Shan foreland,NW China[J].Basin Research,2007.doi:10.1111/j.1365-2117.2007.00339.x.
    [54]Brown E T,Bourles D L,Burchfiel B C,et al.Estimation of slip rates in the southern Tien Shan using cosmic ray expo-sure dates of abandoned alluvial fans[J].Geological Society of America Bulletin,1998,110:377-386.
    [55]吕红华,李有利,南峰,等.天山北麓河流阶地序列及形成年代[J].地理学报,2008,63(1):65-74.
    [56]彭希龄.新疆第四纪的沉积序列[G]∥干旱区新疆第四纪研究论文集.乌鲁木齐:新疆人民出版社,1985.
    [57]新疆地质局.西北地区地层表,新疆卷[M].北京:地质出版社,1981:496.
    [58]新疆地质局.新疆区域地质志[M].北京:地质出版社,1993:841.
    [59]陈杰,卢演涛,丁国瑜.塔里木西缘晚新生代造山过程的记录:磨拉石建造及生长地层和生长不整合[J].第四纪研究,2001,21(6):528-539.
    [60]Fu B,Ninomiya Y,Guo J M.Slip partitioning in the north-east Pamir-Tian Shan convergence zone[J].Tectonophysics,2009.doi:10.1016/j.tecto.2009.11.003.
    [61]Scharer K M,Burbank D W,Chen J,et al.Detachment fold-ing in the southwestern Tian Shan-Tarim foreland,China:Shortening estimates and rates[J].Journal of Structural Ge-ology,2004,26(11):2119-2137.
    [62]王永,王彦斌.北天山山前安集海河阶地形成的时代及意义[J].地质论评,2000,46(6):584-587.
    [63]袁庆东,郭召杰,张志诚,等.天山北缘河流阶地形成及构造变形定量分析[J].地质学报,2006,80(2):210-216.
    [64]Abdrakhmatov K Y,Aldazhanov S A,Hager B H,et al.Relatively recent construction of the Tien Shan inferred from GPS measurements of present-day crustal deformation rates[J].Nature,1996,384(5):450-453.
    [65]Reigber C,Michel G W,Galas R,et al.New space geodetic constraints on the distribution of deformation in the Central Asia[J].Earth and Planetary Science Letters,2001,191:157-165.doi:10.1016/S0012-821X(01)00414-9.

版权所有:© 2023 中国地质图书馆 中国地质调查局地学文献中心