Lower Cretaceous detrital zircon U-Pb dating and its provenance significance in Hari sag, Yingen-Ejinaqi Basin, Inner Mongolia
Chen Zhi-Jun1, Gao Yi-Wen1, Meng Jiang-Hui2, Li Ke-She1, Wu Feng1, Chang Tian-Tian1, Liu Tao1, Han Chang-Chun1
1 Reseach Institute of Yanchang Petroleum(Group)Co., Ltd.,Xi'an 710075,Shaanxi; 2 Hubei Cooperative Innovation Center of Unconventional Oil and Gas,Yangtze University,Wuhan 430100,Hubei
摘要 前人认为银额盆地下白垩统物源主要来自凹陷周缘的造山带或凸起区,但对于下白垩统的物源具体属于何套地层、确切源区位置等问题,并未开展过相关研究。笔者以哈日凹陷为例,通过对该凹陷下白垩统8个沉积岩样品开展地球化学和碎屑锆石U-Pb年代学研究,以期解决以上问题。研究结果表明: (1)碎屑锆石按年龄可以分为三叠纪锆石、二叠纪锆石、石炭纪锆石和古老锆石4类,对应的年龄分别为$237.9\pm3.2\pm-238.3\pm8.4$ Ma, $255.0\pm9.7-285.9\pm4.3$ Ma, $307.0\pm23.0-330.0\pm3.0$ Ma and $434.0\pm4.0-2584.0\pm14.0$ Ma 。(2)微量元素和锆石年龄组成特征表明,下白垩统以二叠系和石炭系物源供给为主,包括二叠纪和石炭纪侵入岩和沉积岩。(3)锆石年龄分布指示哈日凹陷下白垩统物源具有多源区的特征,凹陷西北部的洪格尔吉山、南部的宗乃山和东部的切刀山对其均有物源贡献。(4)3个物源区对巴音戈壁组和苏红图组的物源贡献率具有一定的差异,如宗乃山地区对苏红图组有较大的物源贡献率,这种差异可能由沉积物迁移距离、源区地质体剥蚀速率、构造运动等原因所致。下白垩统物源特征的确定,对于恢复哈日凹陷早白垩世原型盆地、建立早白垩世沉积古地理模型等均具有重要的意义。
Abstract：It is generally recognized that the source of Lower Cretaceous in Yingen-Ejinaqi Basin is from orogenic belt or uplift around the sags,but some queries about provenance were still unanswered,such as the specific formations,exact source area ,etc. In this paper,taking Hari Sag as an example,based on geochemical test analysis and zircon U-Pb dating of 8 drilling rock samplings,the study of geochemical characteristics and detrital zircon U-Pb chronology were carried out. The results showed that: (1)Zircon could be divided into 4 types by age,they are Triassic zircons,Permian zircons,Carboniferous zircons and ancient zircons,and the corresponding age were $237.9\pm3.2\pm-238.3\pm8.4$ Ma, $255.0\pm9.7-285.9\pm4.3$ Ma, $307.0\pm23.0-330.0\pm3.0$ Ma and $434.0\pm4.0-2584.0\pm14.0$ Ma respectively. (2)The characteristics of trace elements and the zircon ages indicated that the sedimentary source of the Lower Cretaceous in Hari Sag was dominated by the Permian and Carboniferous provenance,including pluton and sedimentary strata. (3)The age distribution of detrital zircon indicated that there were multiple provenance in the Lower Cretaceous of the Hari Sag,such as Honggeeji mountain in the northwest,Zongnai mountain in the south,and the Qiedao mountain in the east of the sag. (4)There were different contribution of these provenance to Bayingebi Formation and Suhongtu Formation,like Zongnai mountain was the biggest contributor to Suhongtu Formation. This contribution difference might be due to the transport distance of sediments,denudation rate of geological bodies,structural movements and so on. The determination of the provenance of the Lower Cretaceous was of great significance for the restoration of the Early Cretaceous Prototype Basin,the establishment of the Early Cretaceous sedimentary paleogeographic model and many more.
Chen Zhi-Jun,Gao Yi-Wen,Meng Jiang-Hui et al. Lower Cretaceous detrital zircon U-Pb dating and its provenance significance in Hari sag, Yingen-Ejinaqi Basin, Inner Mongolia[J]. JOPC, 2018, 20(6): 1086-1101.
[1] 陈建平,何忠华,魏志彬,王东良,秦建中,国建英. 2001. 银额盆地查干凹陷基本生油条件研究. 石油勘探与开发, 28(6): 23-27. [Chen J P,He Z H,Wei Z B,Wang D L,Qin J Z,Guo J Y.2001. A study on the principal conditions of hydrocarbon generation in Chagan sag of Yingen-Ejinaqi Basin,Northwest China. Petroleum Exploration and Development, 28(6): 23-27] [2] 冯乔,秦宇,付锁堂,柳益群,周鼎武,马达德,王立群,任军虎,王晨瑜. 2015. 柴达木盆地北缘乌兰县牦牛山组碎屑锆石定年及其地质意义. 沉积学报, 33(3): 486-499. [Feng Q,Qin Y,Fu S T,Liu Y Q,Zhou D W,Ma D D,Wang L Q,Ren J H,Wang C Y.2015. U-Pb age of detrital zircons and its geological significance from maoniushan Formation in the Wulan County,northern margin of Qaidam Basin. Acta Sedimentologica Sinica, 33(3): 486-499] [3] 付星辉,赵红格,周义军,彭治超,蒋盛,张孙玄琦,王海然,李亚男. 2016. 内蒙古狼山地区侏罗系LA-ICP-MS碎屑锆石U-Pb定年及其物源意义. 地质通报, 35(12): 2063-2075. [Fu X H,Zhao H G,Zhou Y J,Peng Z C,Jiang S,Zhangsun X Q,Wang H R,Li Y N.2016. Jurassic detrital zircon U-Pb dating of Langshan area,Inner Mongolia,and its provenance significance. Geological Bulletin of China, 35(12): 2063-2075] [4] 高洪雷. 2010. 内蒙古狼山地区中生代构造演化与年代学约束. 中国地质大学(北京)硕士论文. [Gao H L.2010. Structure evolution and chronology constrains of Lang Shan in Neimeng Antonomous region. Master's dissertation of China University of Geosciences(Beijing)] [5] 郭佩,刘池洋,王建强,李长志. 2017. 碎屑锆石年代学在沉积物源研究中的应用及存在问题. 沉积学报, 35(1): 46-56. [Guo P,Liu C Y,Wang J Q,Li C Z.2017. Considerations on the application of detrital-zircon geochronology to sedimentary provenance analysis. Acta Sedimentologica Sinica, 35(1): 46-56] [6] 郝银全,林卫东,董伟宏,刘东周,熊铁. 2006. 银额盆地与二连盆地成藏条件对比及有利勘探区带. 新疆石油地质, 27(6): 664-666. [Hao Y Q,Lin W D,Dong W H,Liu D Z,Xiong T.2006. Correlation of hydrocarbon accumulation conditions in Yin' e Basin and Erlian Basin and selection of favorable prospecting zones. Xinjiang Petroleum Geology, 27(6): 664-666] [7] 何景文,朱文斌,郑碧海,吴海林,葛荣峰,罗梦. 2016. 塔里木西北缘阿克苏地区震旦系苏盖特布拉克组沉积物源分析: 碎屑锆石年代学证据. 地质学报, 89(1): 149-162. [He J W,Zhu W B,Zheng B H,Wu H L,Ge R F,Luo M.2016. Provenance of Sinian Sugetbrak rocks in the Aksu area NW Tarim: Evidence from detrital zircon geochronology. Acta Geologica Sinica, 89(1): 149-162] [8] 荆国强. 2010. 银根一额济纳旗地区晚古生代盆地形成与演化研究. 长安大学硕士论文. [Jing G Q.2010. Study on the formation and evolution of the Basin in Neopaleozoic in area of Yin'gen-Ejin'naqi. Master's Dissertation of Chang'an University] [9] 旷红伟,柳永清,刘燕学,彭楠,许欢,董超,陈军,刘海,徐加林,薛沛霖. 2013. 兴蒙造山区及邻区早白垩世盆地岩石地层格架与沉积古地理演化. 地质通报, 32(7): 1063-1084. [Kuang H W,Liu Y Q,Liu Y X,Peng N,Xu H,Dong C,Chen J,Liu H,Xu J L,Xue P L.2013. Stratigraphy and depositional palaeogeography of the Early Cretaceous basins in Da Hinggan Mountains-Mongolia orogenic belt and its neighboring areas. Geological Bulletin of China, 32(7): 1063-1084] [10] 雷玮琰,施光海,刘迎新. 2013. 不同成因锆石的微量元素特征研究进展. 地学前缘, 20(4): 273-284. [Lei W Y,Shi G H,Liu Y X.2013. Research progress on trace element characteristic of zircons of different origins. Earth Science Frontiers, 20(4): 273-284] [11] 林卫东,周永章,王新民,张虎权,王宏斌. 2004. 银根—额济纳旗盆地天草凹陷构造-沉积体系演化及油气成藏条件分析. 大地构造与成矿学, 28(4): 444-449. [Lin W D,Zhou Y Z,Wang X M,Zhang H Q,Wang H B.2004. Structural-depositional system and factors affecting the hydrocarbon pool formation in Tiancao Depression,Yingen-Ejinaqi Basin. Geotectonica et Metallogenia, 28(4): 444-449] [12] 刘春燕,林畅松,吴茂炳,巩固,郑孟林. 2006. 银根一额济纳旗中生代盆地构造演化及油气勘探前景. 中国地质, 33(6): 1328-1335. [Liu C Y,Lin C S,Wu M B,Gong G,Zheng M L.2006. Tectonic evolution and petroleum prospects of the Mesozoic Inggen-Ejin Qi Basin,Inner Mongolia. Geology in China, 33(6): 1328-1335] [13] 卢进才,牛亚卓,魏仙样,陈高潮,李玉宏. 2013. 北山红石山地区晚古生代火山岩LA-ICP-M锆石U-Pb年龄及其构造意义. 岩石学报, 29(8): 2685-2694. [Lu J C,Niu Y Z,Wei X Y,Chen G C,Li Y H.2013. LA-ICP-MS zircon U-Pb dating of the Late Paleozoic volcanic rocks from the Hongshishan area of the Beishan orogenic belt and its tectonic significances. Acta Petrologica Sinica, 29(8): 2685-2694] [14] 鲁有朋,俞胜,张永全,张久凤. 2015. 内蒙狼山地区中生代构造演化及年代学特征. 甘肃地质, 24(2): 24-29. [Lu Y P,Yu S,Zhang Y Q,Zhang J F.2015. Tectonic evolution and chronology constrains of Langshan region in Inner Mongolia Autonomous. Gansu Geology, 24(2): 24-29] [15] 宋芳,牛志军,何垚砚,杨文强. 2016. 中扬子地区南华纪早期碎屑锆石U-Pb年龄及其对物源特征和古地理格局的约束. 地质学报, 90(10): 2661-2680. [Song F,Niu Z J,He Y Y,Yang W Q.2016. U-Pb age of detrital zircon and its restriction of provenance & paleogeographic characteristics of Early Nanhua Period in Middle Yangtze. Acta Geologica Sinica, 90(10): 2661-2680] [16] 苏慧敏,毛景文,何细荣,卢燃. 2013. 北武夷天华山盆地形成时限的约束: 来自火山岩—侵入岩的年代学证据. 中国科学: 地球科学, 43(5): 745-759. [Su H M,Mao J W,He X R,Lu R.2013. Timing of the formation of the Tianhuashan Basin in northern Wuyi as constrained by geochronology of volcanic and plutonic rocks. Science China: Earth Sciences, 43(5): 745-759] [17] 王盟,罗静兰,李杪,白雪晶,程辰,闫辽伟. 2013. 鄂尔多斯盆地东胜地区砂岩型铀矿源区及其构造背景分析:来自碎屑锆石U-Pb年龄及Hf 同位素的证据. 岩石学报, 29(8): 2746-2758. [Wang M,Luo J L,Li M,Bai X J,Chen C,Yan L W.2013. Provenance and tectonic setting of sandstone-type uranium deposit in Dongsheng area,Ordos Basin: Evidence from U-Pb age and Hf isotopes of detrital zircons. Acta Petrologica Sinica, 29(8): 2746-2758] [18] 王香增,陈治军,任来义,刘护创,高怡文. 2016. 银根—额济纳旗盆地苏红图坳陷H井锆石LA-ICP-MS U-Pb定年及其地质意义. 沉积学报, 34(5): 853-867. [Wang X Z,Chen Z J,Ren L Y,Liu H C,Gao Y W.2016. U-Pb age of zircon and its geological significance in Suhongtu Depression,Yingen-Ejinaqi Basin. Acta Sedimentologica Sinica, 34(5): 853-867] [19] 王小多,刘护创,于珺,陈治军,贺晓,李科社,刘涛,韩长春. 2015. 银额盆地哈日凹陷油气成藏条件研究及有利区带预测. 科学技术与工程, 15(36): 142-147. [Wang X D,Liu H C,Yu J,Chen Z J,He X,Li K S,Liu T,Han C C.2015. Research on petroleum geological conditions and prediction of favorable exploration zone in Hari sag of Yingen-Ejinaqi Basin. Science Technology and Engineering, 15(36): 142-147] [20] 王廷印,王金荣,刘金坤,王士政,吴家弘. 1994. 宗乃山—沙拉扎山陆壳基底火山弧火成岩组合及地球化学特征. 地球化学,23(增刊): 162-172. [Wang T Y,Wang J R,Liu J K,Wang S Z,Wu J H.1994. Igneous rock associations and geochemical characteristics of volcanic arc with continental crustal basement in Zongnaishan-Shalazhashan. Geochimica,23(Supplement): 162-172] [21] 王廷印,高军平,王金荣,吴家弘. 1998. 内蒙古阿拉善北部地区碰撞期和后造山期岩浆作用. 地质学报, 72(2): 126-137. [Wang T Y,Gao J P,Wang J R,Wu J H.1998. Magmatism of collisional and post-orogenic period in northern Alaxa region in Inner Mongolia. Acta Geologica Sinica, 72(2): 126-137] [22] 吴茂炳,王新民. 2003. 银根—额济纳旗盆地油气地质特征及油气勘探方向. 中国石油勘探, 8(4): 45-49. [Wu M B,Wang X M.2003. Petroleum geological characteristic and prospecting directions for oil and gas in Yingen-Ejinaqi Basin. China Petroleum Exploration, 8(4): 45-49] [23] 吴元宝,郑永飞. 2004. 锆石成因矿物学研究及其对U-Pb年龄解释的制约. 科学通报, 49(16): 1589-1604. [Wu Y B,Zhen Y F.2004. Research on genetic mineralogy of zircon and its restriction to the interpretation of U-Pb age. Chinese Science Bulletin, 49(16): 1589-1604] [24] 向忠金,闫全人,夏磊,宋博,王宗起. 2016. 北大巴山新元古代龙潭河组的源区特征: 来自碎屑组成和锆石年代学的证据. 地质学报, 90(8): 1886-1899. [Xiang Z J,Yan Q R,Xia L,Song B,Wang Z Q.2016. Provenance characteristic of the Neoproterozoic Longtanhe Formation in the north Daba mountain,Central China: Constrains from detrital framework and zircon geochronology. Acta Geologica Sinica, 90(8): 1886-1899] [25] 张代生. 2002. 银根—额济纳旗盆地油气地质条件与勘探方向. 吐哈油气, 7(1): 5-10. [Zhang D S.2002. The oil and gas geologic conditions and exploration potential of Yingen-Ejinaqi Basin. Tuha Oil & Gas, 7(1): 5-10] [26] 张代生,李光云,罗肇,李兴亮. 2003. 银根—额济纳旗盆地油气地质条件. 新疆石油地质, 24(2): 130-133. [Zhang D S,Li G Y,Luo Z,Li X L.2003. Characteristics of petroleum geology in Yingen-Ejinaqi Basin. Xinjiang Petroleum Geology, 24(2): 130-133] [27] 张进,李锦轶,刘建峰,李岩峰,曲军峰,冯乾文. 2012. 早古生代阿拉善地块与华北地块之间的关系: 来自阿拉善东缘中奥陶统碎屑锆石的信息. 岩石学报, 28(9): 2912-2934. [Zhang J,Li J T,Liu J F,Li Y F,Qu J F,Feng Q W.2012. The relationship between the Alxa Block and the North China Plate during the Early Paleozoic: New information from the Middle Ordovician detrital zircon ages in the eastern Alxa Block. Acta Petrologica Sinica, 28(9): 2912-2934] [28] 张雷,刘招君,和钟铧,杨婷,杜江峰,侯伟. 2008. 孙吴—嘉荫盆地白垩系淘淇河组—太平林场组砂岩主量元素的地球化学特征. 沉积与特提斯地质, 28(2): 100-106. [Zhang L,Liu Z J,He Z H,Yang T,Du J F,Hou W.2008. Geochemistry of major elements from the Cretaceous Taoqihe Formation-Taipinglinchang Formation sandstones in the Sunwu-Jiayin Basin. Sedimentary Geology and Tethyan Geology, 28(2): 100-106] [29] 钟福平,钟建华,王毅,由伟丰. 2014. 银根—额济纳旗盆地苏红图坳陷早白垩世火山岩地球化学特征与成因. 矿物学报, 34(1): 107-116. [Zhong F P,Zhong J H,Wang Y,You W F.2014. Geochemistry characteristics and origin of Early Cretaceous volcanic rocks in Suhongtu Depression,Inner Mongolia,China. Acta Mineralogica Sinica, 34(1): 107-116] [30] Bernet M,Zattin M,Garver J I,Wagonerce J A.2013. Steady-state exhumation of the European Alps. Geology, 29(1): 35-38. [31] Cawood P A,Hawkesworth C J,Dhuime B.2012. Detrital zircon record and tectonic setting. Geology, 40(10): 875-878. [32] Dhuime B,Bosch D,Bruguier O,Caby R,Pourtales S.2007. Age,provenance and post-deposition metamorphic overprint of detrital zircons from the Nathorst Land Group(NE Greenland): A LA-ICP-MS and SIMS study. Precambrian Research,155(1/2): 24-46. [33] Horton B K,Anferson V J,Caballero V M,Mora A.2015. Application of detrital zircon U-Pb geochronology to surface and subsurface correlations of provenance,paleodrainage,and tectonics of the Middle Magdalena Valley Basin of Colombia. Geosphere, 11(6): 1-22. [34] Hoskin P W O,Black L P.2000. Metamorphic zircon formation by solid-state recrystallization of protolith igneous zircon. J Metamorph Geol, 18: 423-439. [35] Lawton T F, Hunt G J,Gehrels G E.2010. Detrital zircon record of thrust belt unroofing in Lower Cretaceous synorogenic conglomerates,central Utah. Geology, 38(5): 463-466. [36] Liata A,Gebauer D,Wysoczanski R.2002. U-Pb SHRIMP-dating of zircon domains from UHP garnet-rich mafic rocks and late pegmatoids in the Rhodope zone(N Greece): Evidence for Early Cretaceous crystallization and Late Cretaceous metamorphism. Chemical Geology, 184: 281-299. [37] Lowe D G,Sylvester P J,Enachescu M E.2011. Provenance and paleod-rainage patterns of Upper Jurassic and Lower Cretaceous synrift sandstones in the Flemish Pass Basin,offshore Newfoundland,east coast of Canada. AAPG Bulletin, 95(8): 1295-1320. [38] Mackey G N,Horton B K,Milliken K L.2012. Provenance of the Paleo-cene-Eocene Wilcox Group,western gulf of Mexico Basin: Evidence for intergrated drainage of southern Laramide rocky mountains and cordilleran arc. Geological Society of America Bulletin,124(5/6): 1007-1024. [39] Ronlinson H R.1993. Using geochemical data: evaluation,presentation, interpretation. London: Longman Scientific Technical Press,1-25. [40] Rudnick R,Gao S.2003. Composition of the continental crust. Treatise on geochemistry, 3: 1-64. [41] Saylor J E,Knowles J N,Horton B K,Nie J S,Mora A.2013. Mixing of source populations recorded in detrital zircon U-Pb age spectra of modern rivers ands. The Journal of Geology, 121(1): 17-33. [42] Sun S S,Mc Donough W F.1989. Chemical and isotopic systematics of oceanic basalts: Implications for mantle composition and processes. Geological Society London,Special Publications, 42: 313-345. [43] Willams I S,Claesson S.1987. Isotopic evidence for the Precambrian provenance and Caledonian metamorphism of high grade paragneisses from the Seve Nappes,Scandinavian Caledonides. Contrib Mineral Petrol, 97: 205-217.
