Lithologic characteristics and sedimentary environment of fine-grained sedimentary rocks of the Paleogene in Dongying sag,Bohai Bay Basin
Liu Shu-Jun1, Cao Ying-Chang1,2, Liang Chao1,2
1 School of Geosciences,China University of Petroleum,Shandong Qingdao 266580,China; 2 Laboratory for Marine Mineral Resources, Pilot National Laboratory for Marine Science and Technology(Qingdao),Shandong Qingdao 266071,China
Abstract：With the development of shale oil and gas exploration,it is necessary to dissect the type and composition of fine-grained sedimentary rocks in detail,which is of great significance for the establishment of dominant rock assemblage in subsequent reservoir studies. Fine-grained sedimentary rocks are well developed in Dongying sag,Bohai Bay Basin. By means of core observation,X-ray diffraction of whole rock and analysis methods,the carbonate minerals,clay minerals and silty minerals are considered to be the main mineral components of fine-grained sedimentary rocks in Donying sag. According to mineral content and sedimentary structure,the fine-grained sedimentary rocks of the lower submember of Es3 member and the upper submember of Es4 member can be divided into 9 kinds of rock types,in which the laminar mixed fine-grained sedimentary rocks,the massive mixed fine-grained sedimentary rocks,the laminar limestone,the laminar silty limestone and the laminar argillaceous siltstone are relatively well developed. Based on the vertical variation of the characteristic element ratio of Ca/Mg,Na/Al,Fe/Mn,Sr/Ba,V/(V+Ni),and the element content of Ti and Al,it is deduced that there are some obvious evolution stages of fine-grained sedimentary rocks in palaeoclimate,palaeowater depth,palaeosalinity,oxidative or reductive properties of the water,and the content of terrigenous clastics input. The palaeoclimate changed from dry and cold to warm and humid in the depositional period of upper submember of Es4,and developed from warm and humid to relatively cold and humid to warm and humid to relatively hot and humid in the depositional period of the lower submember of Es3. In conclusion,warm and humid climate together with the increase of terrigenous clastics contributed to deposit large amounts of laminar mixed fine-grained sedimentary rocks,whereas the laminar silty limestone tended to deposit in relatively cold and dry climate as well as less terrigenous clastics input. This conclusion is conducive to deepen the basic research of fine-grained sedimentary rocks in the faulted lacustrine basin,and can lay a solid foundation for future exploration and development of oil and gas.
Liu Shu-Jun,Cao Ying-Chang,Liang Chao. Lithologic characteristics and sedimentary environment of fine-grained sedimentary rocks of the Paleogene in Dongying sag,Bohai Bay Basin[J]. JOPC, 2019, 21(3): 479-489.
[1] 陈中红,查明,金强. 2008. 东营凹陷古近系中深层湖盆演化中的无机元素响应. 沉积学报, 26(6): 925-932. [Chen Z H,Zha M,Jin Q.2008. Mineral elemental response to the evolution of terrestrial brine faulted-basin: A case study in the Paleogene of Well Haoke-1,Dongying Sag. Acta Sedimentologica Sinica, 26(6): 925-932] [2] 付亚飞,邵龙义,张亮,郭双庆,石彪,侯海海,闫晗,宋建军. 2018. 焦作煤田石炭—二叠纪泥质岩地球化学特征及古环境意义. 沉积学报, 36(2): 415-426. [Fu Y F,Shao L Y,Zhang L,Guo S Q,Shi B,Hou H H,Yan H,Song J J.2018. Geochemical characteristics of mudstones in the Permo-Carboniferous strata of the Jiaozuo Coalfield and their paleoenvironmental significance. Acta Sedimentologica Sinica, 36(2): 415-426] [3] 姜在兴,梁超,吴靖,张建国,张文昭,王永诗,刘惠民,陈祥. 2013. 含油气细粒沉积岩研究的几个问题. 石油学报, 34(6): 1031-1039. [Jiang Z X,Liang C,Wu J,Zhang J G,Zhang W Z,Wang Y S,Liu H M,Chen X.2013. Several issues in sedimentological studies on hydrocarbon-bearing fine-grained sedimentary rocks. Acta Petrolei Sinica, 34(6): 1031-1039] [4] 李春荣,陈开远. 2007. 潜江凹陷潜江组元素演化特征及其古气候意义. 石油地质与工程, 21(6): 18-21. [Li C R,Chen K Y.2007. Evolutional characteristics and their paleoclimate significance of elements in the Qianjiang Formation,Qiangjiang Deposition. Petroleum Geology and Engineering, 21(6): 18-21] [5] 李守军,郑德顺,姜在兴,胡斌,王金香,焦叶红. 2005. 用介形类优势分异度恢复古湖盆的水深: 以山东东营凹陷古近系沙河街组沙三段湖盆为例. 古地理学报, 7(3): 399-404. [Li S J,Zheng D S,Jiang Z X,Hu B,Wang J X,Jiao Y H.2005. Water depth of palaeo-lacustrine basin recovered by dominance diversity of Ostracoda: An example from sedimentary period of the Member 3 of Shahejie Formation of Paleogene in Dongying Sag,Shandong Province. Journal of Palaeogeography(Chinese Edition), 7(3): 399-404] [6] 梁超. 2015. 含油气细粒沉积岩沉积作用与储层形成机理. 中国地质大学(北京)博士论文. [Liang C.2015. The sedimentation and reservoir formation mechanism of hydrocarbon-bearing fine-grained sedimentary rocks. China University of Geosciences(Beijing),Doctoral dissertation] [7] 梁超,吴靖,姜在兴,操应长,刘淑君,逄淑伊. 2017. 有机质在页岩沉积成岩过程及储层形成中的作用. 中国石油大学学报(自然科学版), 41(6): 1-9. [Liang C,Wu J,Jiang Z X,Cao Y C,Liu S J,Pang S Y.2017. Significances of organic matters on shale deposition,diagenesis process and reservoir formation. Journal of China University of Petroleum(Edition of Natural Science), 41(6): 1-9] [8] 刘刚,周东升. 2007. 微量元素分析在判别沉积环境中的应用: 以江汉盆地潜江组为例. 石油实验地质, 29(3): 307-310. [Liu G,Zhou D S.2007. Application of trace element analysis in distinguishing sedimentary environment: A case study of Qianjiang Formation in Jianghan Basin. Petroleum Geology & Experiment, 29(3): 307-310] [9] 刘庆,曾翔,王学军,蔡进功. 2017. 东营凹陷沙河街组沙三下—沙四上亚段泥页岩岩相与沉积环境的响应关系. 海洋地质与第四纪地质, 37(3): 147-156. [Liu Q,Zeng X,Wang X J,Cai J G.2017. Lithofacies of mudstones and shale deposits of the Es3z-Es4s Formation in Dongying Sag and their depositional environment. Marine Geology & Quaternary Geology, 37(3): 147-156] [10] 马义权,杜学斌,刘惠民,陆永潮. 2017. 东营凹陷沙四上亚段陆相页岩岩相特征、成因及演化. 地球科学, 42(7): 1195-1208. [Ma Y Q,Du X B,Liu H M,Lu Y C.2017. Characteristics,depositional processes,and evolution of shale lithofacies of the upper submember of Es4 in the Dongying Depression. Earth Science, 42(7): 1195-1208] [11] 宋春晖,鲁新川,邢强,孟庆泉,夏伟民,刘平,张平. 2007. 临夏盆地晚新生代沉积物元素特征与古气候变迁. 沉积学报, 25(3): 409-416. [Song C H,Lu X C,Xing Q,Meng Q Q,Xia W M,Liu P,Zhang P.2007. Late Cenozoic element characters and palaeoclimatic change of the lacustrine sediments in Linxia Basin,China. Acta Sedimentologica Sinica, 25(3): 409-416] [12] 苏新,丁旋,姜在兴,胡斌,孟美岑,陈萌莎. 2012. 用微体古生物定量水深法对东营凹陷沙四上亚段沉积早期湖泊水深再造. 地学前缘, 19(1): 188-199. [Su X,Ding X,Jiang Z X,Hu B,Meng M C,Chen M S.2012. Using of multi-microfossil proxies for reconstructing quantitative paleo-water depth during the deposit period of LST of $Es_4^s$ in Dongying Depression. Earth Science Frontiers, 19(1): 188-199] [13] 王峰,刘玄春,邓秀芹,李元昊,田景春,李士祥. 2017. 鄂尔多斯盆地纸坊组微量元素地球化学特征及沉积环境指示意义. 沉积学报, 35(6): 1265-1273. [Wang F,Liu X C,Deng X Q,Li Y H,Tian J C,Li S X.2017. Geochemical characteristics and environmental implications of trace elements of Zhifang Formation in Ordos Basin. Acta Sedimentologica Sinica, 35(6): 1265-1273] [14] 王淑芳,董大忠,王玉满,黄金亮,蒲泊伶. 2014. 四川盆地南部志留系龙马溪组富有机质页岩沉积环境的元素地球化学判别指标. 海相油气地质, 73(3): 27-34. [Wang S F,Dong D Z,Wang Y M,Huang J L,Pu B L.2014. Geochemistry evaluation index of redox-sensitive elements for depositional environments of Silurian Longmaxi organic-rich shale in the south of Sichuan Basin. Marine Origin Petroleum Geology, 73(3): 27-34] [15] 吴靖,姜在兴,童金环,杨璐,李积,聂海宽. 2016. 东营凹陷古近系沙河街组四段上亚段细粒沉积岩沉积环境及控制因素. 石油学报, 37(4): 464-473. [Wu J,Jiang Z X,Tong J H,Yang L,Li J,Nie H K.2016. Sedimentary environment and control factors of fine-grained sedimentary rocks in the upper fourth Member of Paleogene Shahejie Formation,Dongying Sag. Acta Petrolei Sinica, 37(4): 464-473] [16] 吴靖,姜在兴,梁超. 2017. 东营凹陷沙河街组四段上亚段细粒沉积岩岩相特征及与沉积环境的关系. 石油学报, 38(10): 1110-1122. [Wu J,Jiang Z X,Liang C.2017. Lithofacies characteristics of fine-grained sedimentary rocks in the upper submember of Member 4 of Shahejie Formation,Dongying Sag and their relationship with sedimentary environment. Acta Petrolei Sinica, 38(10): 1110-1122] [17] 熊小辉,肖加飞. 2011. 沉积环境的地球化学示踪. 地球与环境, 39(3): 405-414. [Xiong X H,Xiao J F.2011. Geochemical indicators of sedimentary environments: A summary. Earth and Environment, 39(3): 405-414] [18] 徐守余,李学艳. 2005. 胜利油田东营凹陷中央隆起带断层封闭模式研究. 地质力学学报, 11(1): 19-24. [Xu S Y,Li X Y.2005. Fault seal model of the central uplift,Dongying Depression. Journal of Geomechanics, 11(1): 19-24] [19] 杨万芹,蒋有录,王勇. 2015. 东营凹陷沙三下—沙四上亚段泥页岩岩相沉积环境分析. 中国石油大学学报(自然科学版), 39(4): 19-26. [Yang W Q,Jiang Y L,Wang Y.2015. Study on shale facies sedimentary environment of lower Es3-upper Es4 in Dongying Sag. Journal of China University of Petroleum(Natural Science Edition), 39(4): 19-26] [20] 姚益民,徐道一,张海峰,韩延本,张守鹏,尹志强,李宝利,何青芳,边雪梅. 2007. 山东东营凹陷新生代天文地层表简介. 地层学杂志,31(s2): 423-429. [Yao Y M,Xu D Y,Zhang H F,Han Y B,Zhang S P,Yin Z Q,Li B L,He Q F,Bian X M.2007. A brief introduction to the Cenozoic astrographic time scale for the Dongying Depression,Shandong. Journal of Stratigraphy,31(s2): 423-429] [21] 张茂盛,胡晓静. 2003. 微量元素在地质沉积环境中的应用. 广西师范大学学报(自然科学版),21(z3): 80-81. [Zhang M S,Hu X J.2003. Application of trace elements in geological and sedimentary environment. Journal of Guangxi Normal University(Natural Science Edition),21(z3): 80-81] [22] 张顺,陈世悦,鄢继华,谭明友,张云银,龚文磊,王光增. 2015. 东营凹陷西部沙三下亚段—沙四上亚段泥页岩岩相及储层特征. 天然气地球科学, 26(2): 320-332. [Zhang S,Chen S Y,Yan J H,Tan M Y,Zhang Y Y,Gong W L,Wang G Z.2015. Characteristics of shale lithofacies and reservoir space in the 3rd and 4th members of Shahejie Formation,the west of Dongying sag. Natural Gas Geoscience, 26(2): 320-332] [23] 周立宏,蒲秀刚,邓远,陈世悦,鄢继华,韩文中. 2016. 细粒沉积岩研究中几个值得关注的问题. 岩性油气藏, 28(1): 6-15. [Zhou L H,Pu X G,Deng Y,Chen S Y,Yan J H,Han W Z.2016. Several issues in studies on fine-grained sedimentary rocks. Lithologic Reservoirs, 28(1): 6-15] [24] Aplin A C,Macquaker J H S.2011. Mudstone diversity: Origin and implications for source,seal,and reservoir properties in petroleum systems. AAPG Bulletin, 95(12): 2031-2059. [25] Liang C,Jiang Z X,Cao Y C,Wu M H,Guo L,Zhang C M.2016. Deep-water depositional mechanisms and significance for unconventional hydrocarbon exploration: A case study from the Lower Silurian Longmaxi shale in the southeastern Sichuan Basin. AAPG Bulletin, 100(5): 773-794. [26] Liang C,Cao Y C,Jiang Z X,Wu J,Song G Q,Wang Y S.2017. Shale oil potential of lacustrine black shale in the Eocene Dongying Depression: Implications for geochemistry and reservoir. AAPG Bulletin, 101(11): 1835-1858. [27] Liang C,Jiang Z X,Cao Y C,Wu J,Wang Y S,Hao F.2018. The sedimentary characteristics and origin of lacustrine organic-rich shale in the salinized Eocene Dongying Depression. GSA Bulletin,130(1/2): 154-174. [28] Macquaker J H S,Adams A E.2003. Maximizing information from fine-grained sedimentary rocks: An inclusive nomenclature for mudstones. Journal of Sedimentary Research, 73(5): 735-744. [29] Sawyer E W.1986. The influence of source rock type,chemical weathering and sorting on the geochemistry of clastic sediments from the Quetico Metasedimentary Belt,Superior Province,Canada. Chemical Geology, 55(1-2): 77-95. [30] Schieber J.1989. Facies and origin of shales from the mid-Proterozoic Newland Formation,Belt Basin,Montana,USA. Sedimentology, 36(2): 203-219. [31] Schieber J,Zimmerle W,Sethi P V.1998. Shales and Mudstones(Vol. 1): Basin Studies,Sedimentology and Paleontology. Stuttgart: Schweizerbart'sche Verlagsbuchhandlung,1-10.
