Geochemical characteristics and sedimentary tectonic environment of Linxi Formation in Suolun area of central Greater Khingan Mountains
ZHONG Mishan1,2, LV Donglin3, WANG Qi2, ZHANG Huanan4, AO Guang2, WU Zijie2,5, YANG Yunlai2, WANG Yilong2, TAN Chao2
1. College of Earth Sciences, Jilin University, Jilin Changchun 130061, China; 2. Liaoning Provincial Institute of Geological Exploration Co., Ltd, Liaoning Dalian 116100, China; 3. Liaoning Provincial Geology and Mining Group Energy Geology Co. Ltd, Liaoning Shenyang 110013, China; 4. Liaoning Geological and Mineral Survey Institute Co. Ltd, Liaoning Shenyang 110032, China; 5. School of Geosciences, China University of Petroleum (East China), Shandong Qingdao 266580, China
Abstract：The Linxi Formation in central Greater Khingan Mountains is an important hydrocarbon source rocks strata. The formation of hydrocarbon source rocks is closely related to the paleoclimate, palaeostructure and palaeo-environment during the propagation and burial of hydrocarbon generation parent organisms. The climatic tectonic environment of Linxi Formation in sedimentary period can be restored through the geochemical analysis of rock data. Based on the Sr, Li and Ga content, the Sr/Ba ratio, the U/Th ratio and δU method, the Sr/Cu ratio, the authors in this paper have analyzed the sedimentary environment of Linxi Formation from the ancient salinity, re-dox environment, and the ancient climate. The results show that the Linxi Formation might be formed by resedimentation after middle-strong weathering. The oxidative deposition environment is freshwater-brackish water, and the paleoclimate is warm humid climate. The Al2O3/(Al2O3+Fe2O3) and K2O/Na2O- SiO2 ratios, the content and parameters of rare earth elements were used to indicate the sedimentary environment of Linxi Formation. The results show that the Linxi Formation was formed in the active continental margin tectonic environment near the continental island arc, and the paleoenvironment evolved from the sea-land excessive brackish water to the continental freshwater environment in the early retroarc basin. The Linxi Formation is favorable for enrichment and preservation of organic matter, which is the beneficial horizon for hydrocarbon source rocks.This study can provide guidance for the esploration of hydrocarbon source roaks in this area.
仲米山, 吕东霖, 王岐, 张化南, 敖光, 吴子杰, 杨运来, 王艺龙, 谭超. 大兴安岭中段索伦地区林西组岩石地球化学特征与沉积构造环境[J]. 中国地质调查, 2022, 9(5): 89-96.
ZHONG Mishan, LV Donglin, WANG Qi, ZHANG Huanan, AO Guang, WU Zijie, YANG Yunlai, WANG Yilong, TAN Chao. Geochemical characteristics and sedimentary tectonic environment of Linxi Formation in Suolun area of central Greater Khingan Mountains. , 2022, 9(5): 89-96.
[1] 刘俊来,Davis G A,纪沫,等.地壳的拆离作用与华北克拉通破坏:晚中生代伸展构造约束[J].地学前缘,2008,15(3):72-81. Liu J L,Davis G A,Ji M,et al.Crustal detachment and destruction of the North China craton:Constraints from Late Mesozoic extensional structures[J].Earth Sci Front,2008,15(3):72-81. [2] 王兴安,徐仲元,刘正宏,等.大兴安岭中部柴河地区钾长花岗岩的成因及构造背景:岩石地球化学、锆石U-Pb同位素年代学的制约[J].岩石学报,2012,28(8):2647-2655. Wang X A,Xu Z Y,Liu Z H,et al.Petrogenesis and tectonic setting of the K-feldspar granites in Chaihe area,central Greater Xing’an Range:Constraints from petro-geochemistry and zircon U-Pb isotope chronology[J].Acta Petrol Sin,2012,28(8):2647-2655. [3] 施璐,郑常青,姚文贵,等.大兴安岭中段五岔沟地区蛤蟆沟林场A型花岗岩年代学、岩石地球化学及构造背景研究[J].地质学报,2013,87(9):1264-1276. Shi L,Zheng C Q,Yao W G,et al.Geochronology,petro-geochemistry and tectonic setting of the Hamagou forest farm A-type granites in the Wuchagou Region,Central Great Xinggan Range[J].Acta Geol Sin,2013,87(9):1264-1276. [4] 李中会,李阳,李睿杰,等.满归地区早侏罗世岩浆作用及其地质意义[J].中国地质调查,2020,7(5):54-65. Li Z H,Li Y,Li R J,et al.Magmatic activity and its geological significance in Early Jurassic in Mangui area of Inner Mongo-lia[J].Geol Surv China,2020,7(5):54-65. [5] 李中会,李睿杰,李阳,等.大兴安岭满归地区变中酸性火山岩LA-ICP-MS锆石U-Pb年龄及其地质意义[J].中国地质调查,2020,7(1):47-52. Li Z H,Li R J,Li Y,et al.LA-ICP-MS zircon U-Pb ages and geological significance of the Meta-intermediate-acidic volcanic rocks in Mangui area of Da Hinggan mountains[J].Geol Surv China,2020,7(1):47-52. [6] 余和中,蔡希源,韩守华,等.松辽盆地石炭-二叠系烃源岩研究[J].沉积与特提斯地质,2003,23(2):62-66. Yu H Z,Cai X Y,Han S H,et al.The carboniferous-Permian source rocks in the Songliao Basin[J].Sediment Geol Tethyan Geol,2003,23(2):62-66. [7] 张永生,王延斌,卢振权,等.松辽盆地及外围地区石炭系-二叠系烃源岩的特征[J].地质通报,2011,30(2/3):214-220. Zhang Y S,Wang Y B,Lu Z Q,et al.Characteristics of source rock from carboniferous-Permian in Songliao Basin and its peripheral area,northeastern China[J].Geol Bull China,2011,30(2/3):214-220. [8] 陈树旺,丁秋红,郑月娟,等.松辽盆地外围新区、新层系:油气基础地质调查进展与认识[J].地质通报,2013,32(8):1147-1158. Chen S W,Ding Q H,Zheng Y J,et al.New areas and series of strata on the periphery of Songliao Basin:The progress and recognition based on foundational geological survey for oil and gas resources[J].Geol Bull China,2013,32(8):1147-1158. [9] 陈树旺,张健,郑月娟,等.松辽盆地西部斜坡区上古生界油气地质调查进展与发现[J].中国地质调查,2019,6(1):1-9. Chen S W,Zhang J,Zheng Y J,et al.Progresses and discoveries of geological survey on oil and gas resources related to the Upper Paleozoic in the western slope of Songliao Basin[J].Geol Surv China,2019,6(1):1-9. [10] 李福来,曲希玉,刘立,等.内蒙古东北部上二叠统林西组沉积环境[J].沉积学报,2009,27(2):265-272. Li F L,Qu X Y,Liu L,et al.Sedimentary environment of Upper Permian Linxi Group in Inner Mongolia[J].Acta Sedimentol Sin,2009,27(2):265-272. [11] 易立. 海拉尔盆地牧原凹陷油气勘探前景与有利区带目标优选[J].中国地质调查,2019,6(4):104-110. Yi L.Petroleum exploration prospects and favorable zone evaluation in Muyuan sag of Hailaer Basin[J].Geol Surv China,2019,6(4):104-110. [12] 姜雪,刘丽芳,孙和风,等.气候与构造控制下湖相优质烃源岩的差异分布——以渤中凹陷为例[J].石油学报,2019,40(2):165-175. Jiang X,Liu L F,Sun H F,et al.Differential distribution of high-quality lacustrine source rocks controlled by climate and tecto-nics:A case study from Bozhong sag[J].Acta Petrol Sin,2019,40(2):165-175. [13] 李友川. 中国近海湖相优质烃源岩形成的主要控制因素[J].中国海上油气,2015,27(3):1-9. Li Y C.Main controlling factors for the development of high quality Lacustrine hydrocarbon source rocks in offshore China[J].China Offshore Oil Gas,2015,27(3):1-9. [14] 张水昌,张宝民,边立曾,等.中国海相烃源岩发育控制因素[J].地学前缘,2005,12(3):39-48. Zhang S C,Zhang B M,Bian L Z,et al.Development constraints of marine source rocks in China[J].Earth Sci Front,2005,12(3):39-48. [15] 李文国. 内蒙古自治区岩石地层[M].北京:中国地质大学出版社,1996:46-52. Li W G.Rock Strata in Inner Mongolia[M].Beijing:Chinese University of Geosciences Press,1996:46-52. [16] Ren R,Han B F,Xu Z,et al.2014.When did the subduction first initiate in the southern Paleo-Asian Ocean:New constraints from a Cambrian intra-oceanic Arc System in West Junggar,NW China[J].Earth Planet Sci Lett,388:222-236. [17] Cox R,Lowe D R,Cullers R L.The influence of sediment recycling and basement composition on evolution of mudrock chemistry in the Southwestern United States[J].Geochim Cosmochim Acta,1995,59(14):2919-2940. [18] Nesbitt H W,Young G M.Early Proterozoic climates and plate motions inferred from major element chemistry of lutites[J].Nature,1982,299(5885):715-717. [19] Sun S S,McDonough W F.Chemical and isotopic systematics of oceanic basalts:implications for mantle composition and proce-sses[M]//Saunders A D,Norry M J.Magmatism in the Ocean Basins.London:Geological Society Special Publication,1989:313-345. [20] Jewell P W,Stallard R F.Geochemistry and paleoceanographic setting of central Nevada bedded barites[J].J Geol,1991,99(2):151-170. [21] 孙镇城,杨藩,张枝焕,等.中国新生代咸化湖泊沉积环境与油气生成[M].北京:石油工业出版社,1997:133-137. Sun Z C,Yang F,Zhang Z H,et al.The Sedimentary Environment and Hydrocarbon Generation of the Cenozoic Saline Lakes in China[M].Beijing:Petroleum Industry Press,1997:133-137. [22] 同济大学海洋地质系.海、陆相地层辨认标志[M].北京:科学出版社,1980:171-175. Department of Geology,Tongji University.Identification Marks for Marine and Continental Stratigraphy[M].Beijing:Science Press,1980:171-175. [23] 王中刚,于学元,赵振华.稀土元素地球化学[M].北京:科学出版社,1989:1-93. Wang Z G,Yu X Y,Zhao Z H.Geochemistry of Rare Earth Elements[M].Beijing:Science Press,1989:1-93. [24] 田景春,张翔.沉积地球化学[M].北京:地质出版社,2016:63-77. Tian J C,Zhang X.Sedimentary Geochemistry[M].Beijing:Geo-logy Press,Beijing,2016:63-77. [25] 王益友,吴萍.江浙海岸带沉积物的地球化学标志[J].同济大学学报,1983(4):79-87. Wang Y Y,Wu P.Geochemical criteria of sediments in the coastal area of Jiangsu and Zhejiang Provinces[J].J Tongji Univ,1983(4):79-87. [26] Hatch J R,Leventhal J S.Relationship between inferred redox potential of the depositional environment and geochemistry of the Upper Pennsylvanian (Missourian) stark shale member of the Dennis Limestone,Wabaunsee County,Kansas,U.S.A.[J].Chem Geol,1992,99(1-3):65-82. [27] 莱尔曼. 湖泊的化学地质学和物理学[M].王苏民,译.北京:地质出版社,1989. Lerman A.Chemistry,Geology and Physics of Lakes[M].Wang S M,trans.Beijing:Geology Press,Beijing,1989. [28] Boynton W V.Cosmochemistry of the rare earth elements:Meteo-rite studies[J].Dev Geochem,1984,2:63-114. [29] Roser B P,Korsch R J.Determination of tectonic setting of sandstone-mudstone suites using SiO2 content and K2O/Na2O ratio[J].J Geol,1986,94(5):635-650. [30] Bhatia M R,Crook K A W.Trace element characteristics of graywackes and tectonic setting discrimination of sedimentary basins[J].Contrib Mineral Petrol,1986,92(2):181-193. [31] 张健,张海华,陈树旺,等.松辽盆地北部上二叠统林西组地球化学特征及地质意义[J].吉林大学学报:地球科学版,2020,50(2):518-530. Zhang J,Zhang H H,Chen S W,et al.Geochemical characteristics and geological significance of Upper Permian Linxi Formation in Northern Songliao Basin[J].J Jilin Univ:Earth Sci Ed,2020,50(2):518-530. [32] 张海华,李晓海,张健,等.松辽盆地北部上二叠统林西组古生物年代学、地球化学特征及地质意义[J].现代地质,2021,35(2):568-578. Zhang H H,Li X H,Zhang J,et al.Paleochronology,geochemical characteristics,and geological significance of the Upper Permian Linxi Formation in the Northern Songliao Basin[J].Geoscience,2021,35(2):568-578. [33] 张健,李晓海,郑月娟,等.内蒙古扎鲁特地区上二叠统林西组古盐度分析[J].地质与资源,2013,22(6):471-477. Zhang J,Li X H,Zheng Y Y,et al.Analysis on the Paleosalinity of upper Permian Linxi formation in Jarud area,inner Mongo-lia[J].Geol Resour,2013,22(6):471-477. [34] 甄甄,陈树旺,郑月娟,等.内蒙古阿鲁科尔沁旗陶海营子剖面林西组地球化学特征及其对物源-构造背景的制约[J].中国地质,2018,45(5):1011-1022. Zhen Z,Chen S W,Zheng Y J,et al.Geochemical Characteristics of Linxi Formation along Taohaiyingzi section in Ar Horqin Banner,Inner Mongolia,and the constraint on the provenances and the tectonic settings[J].Geol China,2018,45(5):1011-1022. [35] 张海华,张健,苏飞,等.内蒙古阿鲁科尔沁旗林西组泥岩地球化学特征及构造意义[J].地质学报,2019,93(5):1125-1136. Zhang H H,Zhang J,Su F,et al.Geochemical characteristics of mudstone from the Late Permian Linxi Formation in Aluke'Erqin Qi,Inner Mogolia and its structural significance[J].Acta Geol Sin,2019,93(5):1125-1136.
2022, Vol. 9 
