东北地区拉布达林盆地的构造特征及早白垩世变形序列
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摘要
拉布达林盆地为内蒙—大兴安岭古生代碰撞造山带之上的中生代断陷盆地,主要发育下白垩统和第四系。拉布达林盆地的构造特征复杂,主要发育NE向、NEE向和NW向构造,其中NE向构造主要为一系列NE向犁式正断层及其与之相伴的同向正断层组合,NEE向构造具有剪切正断层的性质,NE向和NEE向断层都是形成于塔木兰沟组—伊列克得组沉积时期的控陷断层,它们是形成于同一应力场具有不同力学性质的构造。NW向断层形成较晚,切割了NE向和NEE向断层,具有左行走滑的特征。在大磨拐河组沉积时期经历了较大规模的挤压作用,不仅使部分早期NE向控陷正断层发生正反转作用,而且形成断层转折褶皱和断层传播褶皱。依据反射地震资料及相关地质资料,确定拉布达林盆地在早白垩世经历了3期变形作用,即塔木兰沟组—伊列克得组沉积时期的NW-SE向的伸展作用、大磨拐河组沉积时期的NW-SE向挤压作用和伊敏组沉积时期的近EW向伸展作用。
The Labudalin basin is a Mesozoic unsymmetrical fault depression basin located in the Paleozoic orogenic belt in Inner Mongolia-Da Hinggan Ling area.The Lower Cretaceous and Quaternary depositional systems are well developed in the basin.Structural features of Labudalin basin are very complex.There are three groups of structures in NE direction,NEE direction and NW direction,respectively.The NE-trending structures are mainly a series of listric normal faults and associated normal faults in the same direction.The NEE-trending structures are shear-normal faults.The NE-and NEE-trending faults were formed in the same stress field during the depositional periods of Tamulangou Formation-Yiliekede Formation and have different characteristics.The NW-trending faults are late sinistral strike-slip normal faults cutting the NE-and NEE-trending faults.The Labudalin basin experienced three times of deformation during the Lower Cretaceous:① The NW-NE extension from the Tamulangou Formation depositional period to the Yiliekede Formation depositional period;② The NW-NE compression in the Damoguaihe Formation depositional period;③ The nearly EW extension in the Yimin Formation depositional period.
The Labudalin basin is a Mesozoic unsymmetrical fault depression basin located in the Paleozoic orogenic belt in Inner Mongolia-Da Hinggan Ling area.The Lower Cretaceous and Quaternary depositional systems are well developed in the basin.Structural features of Labudalin basin are very complex.There are three groups of structures in NE direction,NEE direction and NW direction,respectively.The NE-trending structures are mainly a series of listric normal faults and associated normal faults in the same direction.The NEE-trending structures are shear-normal faults.The NE-and NEE-trending faults were formed in the same stress field during the depositional periods of Tamulangou Formation-Yiliekede Formation and have different characteristics.The NW-trending faults are late sinistral strike-slip normal faults cutting the NE-and NEE-trending faults.The Labudalin basin experienced three times of deformation during the Lower Cretaceous:① The NW-NE extension from the Tamulangou Formation depositional period to the Yiliekede Formation depositional period;② The NW-NE compression in the Damoguaihe Formation depositional period;③ The nearly EW extension in the Yimin Formation depositional period.
引文
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ZHANG Yuming,ZHANG Qinglin,Wang Mingjun,YANG Muzhuang.2006.The Reverse structural styles in the Shiwu rift depression,Songliao basin,and their oil and gas exploration significance[J].Acta Geoscientica Sinica,27(2):151～156.
李朋武,高锐,管烨,李秋生.2007.华北与西伯利亚地块碰撞时代的古地磁分析——兼论苏鲁—大别超高压变质作用的构造成因[J].地球学报,28(3):234～252.
刘志宏,万传彪,任延广,李春柏,张宏,柳行军.2006.海拉尔盆地乌尔逊—贝尔凹陷的地质特征及油气成藏规律[J].吉林大学学报(地球科学版),36(4):527～534.
刘志宏,任延广,李春柏,柳行军,张宏,万传彪.2007.海拉尔盆地乌尔逊—贝尔凹陷的构造特征及其对油气成藏的影响[J].大地构造与成矿学,31(2):151～156.
柳行军,刘志宏,冯永玖,任延广,李春柏.2006.海拉尔盆地乌尔逊凹陷构造特征及变形序列[J].吉林大学学报(地球科学版),36(2):215～220.
徐贵忠,边千韬,王艺芬.1998.额尔古纳造山带构造演化与成矿作用[J].地质科学,33(1):84～92.
张玉明,张青林,王明君,杨木壮.2006.松辽盆地十屋断陷反转构造样式及其油气勘探意义[J].地球学报,27(2):151～156.
COPPER MA,WILLIAMS G D,DE GRACIANSKYP C,MURPHYR W,NEEDHAM T,DE PAOR D,STONELEYR,TODD S P,TURNER JP,ZIEGLER P A..1989.Inversion tectonics-a discussion.In:Cooper MA&Williams G D(eds),Inversion Tectonics[M].Lon-don:Geological Society Special Publication,44:335～347.
GAO Yuqiao,LIULi,PENG Xiaolei,QUXiyu,Ma Rui,ZHUZhanping.2007.Characteristics of fluid inclusions in Lower Cretaceous carbon-ate veins in the Labudalin basin,northeastern Inner Mongolia,Chinaand their significance[J].Geological Bulletin of China,26(7):849～856(in Chinese with English abstract).
LI Pengwu,GAO Rui,GUANYe,LI Qiusheng.2007.Paleomagnetic con-straints on the collision of Siberian and North China blocks,with a dis-cussion on the tectonic origin of the ultrahigh——Pressure metamor-phism in the Sulu-Dabie region[J].Acta Geoscientica Sinica,28(3):234～252(in Chinese with English abstract).
LIUHangjun,LIU Zhihong,FENG Yongjiu,REN Yanguang,LI Chun-bai.2006.Structural characteristics and deformation sequence ofUrxun sag in Hailaer basin,China[J].Journal of Jilin University(Earth Science Edition),36(2):215～220(in Chinese with Eng-lish abstract).
LIU Zhihong,REN Yanguang,LI Chunbai,LIU Hangjun1,ZHANGHong,WAN Chuanbiao.2007.Structural features and their impactson hydrocarbon accumulation of Urxun-Beier depression in Hailaerbasin[J].Geotectonica et Metallogenia,31(2):151～156(inChinese with English abstract).
LIU Zhihong,WAN Chuanbiao,REN Yanguang,LI Chunbai,ZHANGHong,LIUHangjun.2006.Geologic characteristics and law of hy-drocarbon accumulation of Urxun-Beier depression in Hailaer basin[J].Journal of Jilin University(Earth Science Edition),36(4):527～534(in Chinese with English abstract).
MITRA S.1993.Geometry and kinematics evolution of inversion[J].AAPG Bulletin,77(7):1159～1191.
MITRA S.1990.Fault-propagation folds:Geometry,kinematic evolution,and hydrocarbon traps[J].AAPG Bulletin,74(6):921～945.
SHAW J H,HOOK S C,SITOHANG E P.1997.Extensional fault bandfolding and synrift deposition:a example fromthe central Sumatra ba-sin,Indonesia[J].AAPG Bulletin,81(3):367～379.
SUPPE J,CHOUG T,HOOKS C.1992.Rate of folding and faulting de-termined from growth strata.In:McClay K R(eds),Thrust Tecton-ics[M].New York:Champman&Hill,105～121.
SUPPER J.1983.Geometry and kinematics of fault-band folding[J].A-merican Journal of Science,283:684～721.
WILLIAMS G D,POWELLC M,COOPER MA.1989.Geometry and ki-nematics of inversion tectonics.In:Cooper M A&Williams G D(eds),Inversion Tectonics[M].London:Geological Society SpecialPublication,(44):3～15.
XU Guizhong,BIAN Qiantao,WANG Yifen.1998.Tectonic evolutionand metallization of the Erguna orogenic belt[J].Chinese Journal ofGeology(formerly,Scientia Geologica Sinica),33(1):84～92(in Chinese with English abstract).
ZHANG Yuming,ZHANG Qinglin,Wang Mingjun,YANG Muzhuang.2006.The Reverse structural styles in the Shiwu rift depression,Songliao basin,and their oil and gas exploration significance[J].Acta Geoscientica Sinica,27(2):151～156.
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