Enlightment of fish coprolites characteristics on lake ecosystem in Early Jurassic Toarcian: taking the Da’anzhai Member in northeast Sichuan Basin as an example
Zhou Xiao-Mei1, Jin Xin1,2, Wu Qiang-Wang1, Ge Yu1, Shi Zhi-Qiang1,2
1 Institute of Sedimentary Geology,Chengdu University of Technology,Chengdu 610059,China; 2 State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation,Chengdu University of Technology, Chengdu 610059,China
Abstract The Toarcian oceanic anoxic event(T-OAE,Early Jurassic)was an episode of profound environmental changes marked by a global carbon-cycle perturbation,marine mass extinctions,and black-shale deposits. Morphological description and inclusion analysis of fish coprolites collected from the Da’anzhai Member of the Lower Jurassic Ziliujing Formation in the northeast Sichuan Basin were carried out in this paper. We found that the interior of coprolites is composed of abundant organic matters,silts,incomplete clay minerals,phosphorous fossils,undigested fish bone,and a large number of ostracods. According to the morphology and microscopic examination of the coprolites,we speculate that they originated from lungfish. The fish coprolites were deposited in an intermediate to deep lake. During the Da’anzhai depositional period,the surface water of the Sichuan lake was enriched in oxygen,and the lake ecological system was healthy. The bottom of the lake was characterized by deposits of black shale,which implies an anoxic and reducing environment. The T-OAE fish coprolites may suggest a stratified water column in a Toarcian lake. The above results may provide a basis for the study of sedimentary response and ecological impact in the lake of Toarcian oceanic anoxic events of early Jurassic.
Fund:National Natural Science Foundation of China(Nos. 41902106,41572085)
Corresponding Authors:
Shi Zhi-Qiang,born in 1972,is a professor of Institute of Sedimentary Geology,Chengdu University of Technology. E-mail: szqcdut@163.com.
About author: Zhou Xiao-Mei,born in 1994,is a master degree candidate of paleontology and stratigraphy in Institute of Sedimentary Geology,Chengdu University of Technology. E-mail: 276378283@qq.com.
Cite this article:
Zhou Xiao-Mei,Jin Xin,Wu Qiang-Wang et al. Enlightment of fish coprolites characteristics on lake ecosystem in Early Jurassic Toarcian: taking the Da’anzhai Member in northeast Sichuan Basin as an example[J]. JOPC, 2021, 23(3): 600-609.
Zhou Xiao-Mei,Jin Xin,Wu Qiang-Wang et al. Enlightment of fish coprolites characteristics on lake ecosystem in Early Jurassic Toarcian: taking the Da’anzhai Member in northeast Sichuan Basin as an example[J]. JOPC, 2021, 23(3): 600-609.
[1] 边兆祥,王金元,王正新. 1991. 云南禄丰、贵州桐梓、陕西富县的鱼粪化石. 成都地质学院学报, 18(2): 20-24. [Bian Z X,Wang J Y,Wang Z X.1991. Yufenites in Lufenghe Yunnan,Tongzi Guizhou, Fuxian,Shaanxi. Journal of Chengdu College of Geology, 18(2): 20-24] [2] 陈超,杨雪飞,王兴,李博,黄梓桑,唐锐峰,杜垚. 2020. 四川盆地东北部下侏罗统自流井组大安寨段湖相碳酸盐岩沉积相分析. 地质论评, 66(4): 837-851. [Chen C,Yang X F,Wang X,Li B,Huang Z S,Tang R F,Du Y.2020. Sedimentary facies analysis of lacustrine carbonate in the Da’anZhai Member,Ziliujing Formation, Lower Jurassic in northeast Sichuan Basin. Geological Review, 66(4): 837-851] [3] 陈薇,郝毅,倪超,朱吟,厚刚福. 2013. 川中下侏罗统大安寨组储层特征及控制因素. 西南石油大学学报(自然科学版), 35(5): 7-14. [Chen W,Hao Y,Ni C,Zhu Y,Hou G F.2013. Reservoir characteristics and controlling factors of Da’anzhai Member in Lower Jurassic, Central Sichuan. Journal of Southwest Petroleum University(Science & Technology Edition), 35(5): 7-14] [4] 邓胜徽,卢远征,樊茹,方林浩,李鑫,刘璐. 2012. 早侏罗世Toarcian期大洋缺氧事件及其在陆地生态系统中的响应. 地球科学, 37(2): 23-38. [Deng S H,Lu Y Z,Fan R,Fang L H,Li X,Liu L.2012. Toarcian(Early Jurassic) Oceanic anoxic event and the response in terrestrial ecosystem. Earth Science, 37(2): 23-38] [5] 邓燕,黄东,米鸿,金涛,闫伟鹏. 2017. 四川盆地侏罗系大安寨段湖相含云质储层成因研究. 中国地质, 44(1): 75-85. [Deng Y,Huang D,Mi H,Jin T,Yan W P.2017. Research on the origin of lacustrine dolomitic: reservoir in Jurassic Da’anzhai Formation of Sichuan Basin. Geology in China, 44(1): 75-85] [6] 丁一,李智武,冯逢,翟中华,孙玮,汤聪,张葳,张长俊,刘树根. 2013. 川中龙岗地区下侏罗统自流井组大安寨段湖相混合沉积及其致密油勘探意义. 地质论评, 59(2): 389-400. [Ding Y,li Z W,Feng F,Zhai Z H,Sun W,Tang C,Zhang W,Zhang C J,Liu S G.2013. Mixing of lacustrine siliciclastic: carbonate sediments and its significance for tight oil exploration in the Da’anzhai Member, Ziliujing Formation, Lower Jurassic, in Longgang area, central Sichuan Basin. Geological Review, 59(2): 389-400] [7] 龚一鸣,张立军,吴义布. 2009. 秦皇岛石炭纪粪化石. 中国科学(D辑: 地球科学), 39(10): 1421-1428. [Gong Y M,Zang L J,Wu Y B.2009. Carboniferous coprolites from Qinhuangdao,North China. Science of China(Series D: Earth Sciences), 39(10): 1421-1428] [8] 黄开伟,王兴志,张帆,冯仁蔚,杜江民,李俨. 2010. 川中小潼场地区大安寨段储层特征研究. 重庆科技学院学报(自然科学版), 12(5): 14-18. [Huang K W,Wang X Z,Zhang F,Feng R W,Du J M,Li Y.2010. Reservoir characteristics of the Da’anzhai Member in Xiaotongchang area,Sichuan. Journal of Chongqing University of Science and Technology(Science and Technology Edition), 12(5): 14-18] [9] 韩永辉,郭正吾. 1984. 四川盆地成盆前地质结构及其向盆地转化. 石油实验地质, 6(4): 22-31. [Han Y H,Guo Z W.1984. Pre-basining construction of Sichuan Basin and its transformation. Experimental Petroleum Geology, 6(4): 22-31] [10] 李德生. 1982. 中国含油气盆地的构造类型. 石油学报, 3(3): 5-16. [Li D S.1982. Tectonic types of oil and gas basins in China. Acta Petrolei Sinica, 3(3): 5-16] [11] 刘宪亭. 1953. 陕西富县及彬县中生代鱼粪化石. 古生物学报, 1(3): 157-164. [Liu X T.1953. Mesozoic fish coprolites from Shaanxi. Acta Palaeontologica Sinica, 1(3): 157-164] [12] 刘宪亭. 1980. 中国古鱼类研究的进展. 古脊椎动物与古人类, 18(4): 262-271. [Liu X T.1980. Advances of the Paleoichthyology in China. Vertebrata Palasiatica, 18(4): 262-271] [13] 梁西文,徐文礼,顾忠安,郑荣才,文华国,程超. 2014. 渝东地区大安寨段沉积相特征及有利区预测. 岩性油气藏, 26(2): 1-8. [Liang X W,Wu W L,Gu Z A,Zheng R C,Wen H G,Cheng C.2014. Sedimentary facies characteristics and favorable area prediction Da’anzhai segment in eastern Chongqing. Lithologic Reservoirs, 26(2): 1-8] [14] 马凤珍. 1981. 角齿鱼与大陆漂移. 化石,(1): 28-29 [Ma F Z.1981. The Ceratodus drifted to the continent. Fossils,(1): 28-29] [15] 乔妥,朱敏. 2008. 云南沾益早泥盆世肺鱼类—新种. 古脊椎动物学报, 46(1): 71-80. [Qiao T,Zhu M.2008. A new species of dipnoi (sarcopterygii,osteichthyes) from lower Devonian of Yunnan, China. Journal of Vertebrate Paleontology, 46(1): 71-80] [16] 王大锐,韩兆宽. 1999. 化石中的珍品: 鱼粪化石. 化石,(2): 18-19. [Wang D R,Han Z K.1999. The treasure of fossils: fish coprolites. Fossil,(2): 18-19] [17] 王俊卿. 1981. 云南曲靖张家营—肺鱼齿板. 古脊椎动物与古人类, 19(3): 197-200. [Wang J Q.1981. A tooth plate of dipnoan from Qujing Yunnan. Vertebrata Palasiatica, 19(3): 197-200] [18] 王念忠. 1977a. 湖南衡南雨母山叉鳞鱼类的发现及其意义: 湖南侏罗纪含煤地层鱼化石之一. 古脊椎动物与古人类, 15(3): 222-232. [Wang N Z.1977a. Discovery and significance of foxtail from Yumu Mountain in southern Hengnan,Hunan: one of the Jurassic coal-bearing strata fish fossils in Hunan. Vertebrata Palasiatica and Paleoanthropology, 15(3): 222-232] [19] 王念忠. 1977b. 湖南零陵—衡阳一带侏罗纪鱼化石及其在地层上的意义: 湖南侏罗纪含煤地层鱼化石之二. 古脊椎动物与古人类, 15(4): 233-243. [Wang N Z.1977b. Jurassic fish fossils in Lingling and Hengyang,Hunan and their stratigraphic significance: Jurassic coal-bearing strata fish fossils in Hunan(part 2). Vertebrata Palasiatica, 15(4): 233-243] [20] 王全伟,梁斌,阚泽忠. 2006. 四川盆地下侏罗统自流井组湖相碳酸盐岩的碳、氧同位素特征及其古湖泊学意义. 矿物岩石, 26(2): 87-91. [Wang Q W,Liang B,Kan Z Z.2006. Carbon and oxygen isotopic compositions of lacustrine carbonates of the early Jurassic Ziliujing Formation in the Sichuan Basin and their paleolimnological significance. Mineral Rocks, 26(2): 87-91] [21] 尹赞勋. 1945. 记鱼粪化石. 地质论评, 10(3-4): 89-96. [Yin Z X.1945. Records of fish coprolites. Geological Review, 10(3-4): 89-96] [22] 张葳,李智武,冯逢,翟中华,孙玮,汤聪,丁一,刘树根. 2013. 川中东北部中—下侏罗统湖相碳酸盐岩碳氧同位素特征及其古环境意义. 古地理学报, 15(2): 247-259. [Zhang W,Li Z W,Feng F,Zhai Z H,Sun W,Tang C,Ding Y,Liu S G.2013. Carbon and oxygen isotopic composition of lacustrine carbonate rocks of the lower-Middle Jurassic in NE part of central Sichuan province and their palaeoenvironmental significance. Journal of Palaeogeography(Chinese Edition), 15(2): 247-259] [23] 张晓鹏. 2005. 内陆湖泊非均质碳酸盐岩油藏勘探技术方法研究: 以四川盆地侏罗系大安寨段灰岩油藏为例. 成都理工大学博士论文,1-81. [Zhang X P.2005. Studies of the Exploration Technology of Interior Lake Heterogeneous Carbonate Reservoirs: Taking Jurassic Limestone Reservoir of Da’anzhai Member in Sichuan Basin as Example. Doctoral disertation of Chengdu University of Technology,1-81] [24] Brachaniec T,Niedz'wiedzki R,Surmik D,Krzykawski T,Szopa K,Gorzelak P,Salamon M A.2015. Coprolites of marine vertebrate predators from the Lower Triassic of southern Poland. Palaeogeography,Palaeoclimatology, Palaeoecology, 435: 118-126. [25] Dentzien-Dias P C,Figueiredo A E Q,Horn B,Cisneros J C,Schultz C L.2012. Paleobiology of a unique vertebrate coprolites concentration from Rio do Rasto Formation(Middle/Upper Permian),Paraná Basin,Brazil. Journal of South American Earth Sciences, 40: 53-62. [26] Diedrich C G,Felker H.2012. Middle Eocene shark coprolites from shallow marine and deltaic coasts of the pre-north sea basin in central Europe. In: Hunt A P,Milan J,Lucas S G,Spielmann J A(eds).Vertebrate Coprolites. New Mexico Museum of Natural History and Science Bulletin, 57: 311-318. [27] Eriksson M E,Lindgren J,Chin K,Mansby U.2011. Coprolite morphotypes from the Upper Cretaceous of Sweden: novel views on an ancient ecosystem and implications for coprolite taphonomy. Lethaia, 44: 455-468. [28] Jenkyns H C.1985. The early Toarcian and Genomanian-Turonian anoxic events in Europe: Comparisons and contrasts. Geologische Rundschau, 74: 505-518. [29] Jenkyns H C.1988. The early Toarcian(Jurassic)anoxic event: Stratigraphic,sedimentary and geochemical evidence. American Journal of Science, 288: 101-151. [30] Jin X,Shi Z Q,Baranyi V,Kemp D B,Han Z,Luo G M,Hu J F,He F,Chen L,Preto N.2020. The Jenkyns Event(early Toarcian OAE)in the Ordos Basin,North China. Global and Planetary Change,193:103273. [31] Luo M,Hu S X,Benton M J,Shi G R,Zhao L S,Huang J Y,Song H J,Wen W,Zhang Q Y,Fang Y H,Huang Y G,Chen Z Q.2017. Taphonomy and palaeobiology of early Middle Triassic coprolites from the Luoping biota,southwest China: implications for reconstruction of fossil food webs. Palaeogeography,Paleoclimatology,Palaeoecology, 474: 232-246. [32] Khosla A,Chin K,Alimohammadin H,Dutta D.2015. Ostracods,plant tissues,and other inclusions in coprolites from the Late Cretaceous Lameta Formation at Pisdura,India: Taphonomic and palaeoecological implications. Palaeogeography, Palaeoclimatology, Palaeoecology, 418: 90-100. [33] McAllister J A.1987. Phylogenetic distribution and morphological reassessment of the intestines of fossil and modern fishes. Zoologische Jahrbücher Abtheilungfür Anatomie und Ontogenie der Thiere, 115: 281-294. [34] Megard R O.1967. Limnology primary productivity and carbonate sedimentation of Minnesota lakes. University Minnesota Limnology Research Center interim Report, 1: 68-69. [35] Megard R O.1968. Planktonic photosynthesis and environment of carbonate deposition in lakes. University Minnesota Limnology Research Center interim Report, 2: 46-47. [36] Nakajima Y,Izumi K.2014. Coprolites from the upper Osawa Formation(upper Spathian),northeastern Japan: evidence for predation in a marine ecosystem 5 Myr after the end-Permian mass extinction. Palaeogeography, Palaeoclimatology, Palaeoecology, 414: 225-232. [37] Neumayer L.1904. Die koprolithen des Perms von Texas. Palaeontographica, 51: 121-128. [38] Xu W M,Micha R,Hugh C J,Stephen P H,James B R,David S B. David A N,Johan W H W, Richard D P,Erik W T,Erdem F I.2017. Carbon sequestration in an expanded lake system during the Toarcian oceanic anoxic event. Nature Geoscience, 10(2): 129-134. [39] Yang Y H,Wu F Y,Yang J H,Chew M D,Xie L W,Chu Z Y,Zhang Y B,Huang C.2014. Sr and Nd isotopic compositions of apatite reference materials used in U-Th-Pb geochronology. Chemical Geology, 385: 35-55.
