张竹桐,曾敏

• 1:中国科学院南京地质古生物研究所现代古生物学和地层学国家重点实验室
• 2:中国科学院大学
• 3:成都理工大学地球科学学院

摘要(Abstract)：

碳酸盐岩地层中的碳同位素值(δ~(13)C)能够有效反应原始大洋的碳同位素组成,广泛应用于全球尺度或者区域地层对比,近十年来是地层学研究中的重要手段。本研究通过对重庆市綦江区安稳镇观音桥剖面进行系统的碳、氧同位素采样与分析,在宝塔组中识别了一次显著的碳同位素漂移事件GICE(Guttenberg Carbon Isotope Excursion),并将GICE分为两段(G1和G2)用于地层对比;其峰值段对应牙形类Hamarodus brevirameus带。通过与其他板块的同期事件对比,显示扬子地区的GICE事件及其次级波动具有重要的全球对比意义,可能是对全球古海洋环境变化和奥陶纪生物大辐射的一次响应。

关键词(KeyWords)： 碳同位素地层;GICE;宝塔组;奥陶系;上扬子区

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金面上项目(41872110);; 中国博士后基金(2018M633331)共同资助

作者(Author): 张竹桐,曾敏

DOI: 10.19839/j.cnki.dcxzz.2020.0036

参考文献(References)：

• 安太庠. 1987.中国南部早古生代牙形石.北京:北京大学出版社.
• 陈英华.1983.四川綦江观音桥宝塔组牙形类.中国地质科学院562综合大队集刊,137-148.
• 樊茹,邓胜徽,张学磊.2010.碳酸盐岩碳同位素地层学研究中数据的有效性.地层学杂志,34(4):445-451.
• 龚方怡,吴荣昌,詹仁斌,栾晓聪.2017.安徽石台上奥陶统稳定碳同位素地层研究及其意义.地层学杂志,41(4):401-410.
• 郭福生,彭花明,潘家永,杜杨松,刘林清,罗能辉,饶明辉,王正其.2003.浙江江山寒武系碳酸盐岩碳氧同位素特征及其古环境意义探讨.地层学杂志,27(4):289-296.
• 马雪莹,卢远征,罗忠,樊茹,李鑫,邓胜徽.2019.重庆南川三泉奥陶系宝塔组碳同位素特征及地层对比.地层学杂志,43(1):18-27.
• 穆恩之,朱兆玲,陈均远,戎嘉余.1978.四川长宁双河附近奥陶纪地层.地层学杂志,2(2):105-121.
• 苏文博,李志明,陈建强,龚淑云,李全国,高勇群.1999.海平面变化全球可比性的可靠例证--上扬子地台东南缘奥陶纪层序地层及海平面变化研究.沉积学报,17(3):345-353.
• 汪啸风.2016.中国南方奥陶纪构造古地理及年代与生物地层的划分与对比.地学前缘,23(6):253-267.
• 王志浩,伯格斯特龙,张元动,甄勇毅,吴荣昌.2015.浙赣地区上奥陶统砚瓦山组的牙形刺及其地层意义(英文).古生物学报,54(2):147-157.
• 詹仁斌,靳吉锁,刘建波.2013.奥陶纪生物大辐射研究:回顾与展望.中国科学D辑:地球科学,58(33):3357-3371.
• 张元动,詹仁斌,甄勇毅,王志浩,袁文伟,方翔,马譞,张俊鹏.2019.中国奥陶纪综合地层和时间框架.中国科学D辑:地球科学,49:66-92.
• 赵平平,江茂生,李任伟.2016.扬子地区中-晚奥陶世转折期的碳同位素漂移事件及其成因探讨.沉积学报,34(6):1021-1031.
• 周传明,张俊明,李国祥,虞子冶.1997.云南永善肖滩早寒武世早期碳氧同位素记录.地质科学,32(2):201-212.
• 朱兆玲,戎嘉余.1994.更换组名.地层学杂志,18(4):308.
• Ainsaar L,M?nnik P,Dronov A V,Izokh O P,Meidla T,Tinn O.2015.Carbon isotope chemostratigraphy and conodonts of the Middle-Upper Ordovician succession in the Tungus basin,Siberian Craton.Palaeoworld,24(1-2):123-135.
• Ainsaar L,Meidla T,Martma T.1999.Evidence for a widespread carbon isotopic event associated with late Middle Ordovician sedimentological and faunal changes in Estonia.Geological Magazine,136(1):49-62.
• Ainsaar L,Meidla T,Martma T.2004.The Middle Caradoc facies and faunal turn over in the Late Ordovician Baltoscandian palaeobasin.Palaeogeography,Palaeoclimatology,Palaeoecology,210(2-4):119-133.
• Algeo T J,Marenco P J,Saltzman M R.2016.Co-evolution of oceans,climate,and the biosphere during the“Ordovician Revolution”:Areview.Palaeogeography,Palaeoclimatology,Palaeoecology,458:1-11.
• Bathurst R G C.1972.Carbonate sediments and their diagenesis.Development in Sedimentology,12(1):1-658.
• Bergstr?m S M,Agematsu S,Schmitz B.2010a.Global Upper Ordovician correlation by means ofδ13C chemostratigraphy:Implications of the discovery of the Guttenbergδ13C Excursion (GICE) in Malaysia.Geological Magazine,147(5):641-651.
• Bergstr?m S M,Chen X,Gutiérrez-Marco J C,Dronov A.2009a.The new chronostratigraphic classification of the Ordovician System and its relations to major regional seriesand stages and toδ13C chemostratigraphy.Lethaia,42:97-107.
• Bergstr?m S M,Chen X,Schmitz B.2009b.First documentation of the Ordovician Guttenbergδ13C Excursion (GICE) in Asia:Chemostratigraphy of the Pagoda and Yanwashan formations in southeastern China.Geological Magazine,146(1):1-11.
• Bergstr?m S M,Eriksson M E,Schmitz B,Young S A,Ahlberg P.2016.Upper Ordovicianδ13Corg chemostratigraphy,K-bentonite stratigraphy,and biostratigraphy in southern Scandinavia:A reappraisal.Palaeogeography,Palaeoclimatology,Palaeoecology,454:175-188.
• Bergstr?m S M,Saltzman M,Schmitz B.2006a.First record of the Hirnantian (Upper Ordovician)δ13C excursion in the North American Midcontinent and its regional implications.Geological Magazine,143(5):657-678.
• Bergstr?m S M,Schmitz B,Saltzman M R,Huff W D.2010b.The Upper Ordovician Guttenbergδ13C Excursion (GICE) in North America and Baltoscandia:Occurrence,chronostratigraphic significance and paleoenvironmental relationships.Special Paper of the Geological Society of America,466:37-67.
• Bergstr?m S M,Schmitz B,Young S A,Bruton D L.2010c.Theδ13Cchemostratigraphy of the Upper Ordovician Mj?sa Formation at Furuberget near Hamar,southeastern Norway:Baltic,trans-Atlantic,and Chinese relations.Norwegian Journal of Geology,90(1):65-78.
• Bergstr?m S M,Young S A,Schmitz B.2010d.Katian (Upper Ordovician)δ13C chemostratigraphy and sequence stratigraphy in the United States and Baltoscandia:A regional comparison.Palaeogeography,Palaeoclimatology,Palaeoecology,296(3-4):217-234.
• Brasier M D,Magaritz M M,Corfield R,Luo H,Wu X,Ouyang L,Jiang Z,Hamdi B,He T,Fraser A G.1990.The carbon and oxygen isotope record of the Precambrian-Cambrian boundary interval in China and Iran and their correlation.Geological Magazine,127(4):319-332
• Buggisch W,Joachimski M M,Lehnert O,Bergstr?m S M,Repetski J E,Webers G F.2010.Did intense volcanism trigger the first Late Ordovician icehouse?Geology,38(4):327-330.
• Calner M,Lehnert O,Joachimski M.2010.Carbonate mud mounds,conglomerates,and sea-level history in the Katian (Upper Ordovician) of central Sweden.Facies,56(1):157-172.
• Chen X,Rong J.1992.Ordovician plate tectonics of China and its neighbouring regions//Webby B D,Laurie J R (eds.).Global perspectives on Ordovician geology:Proceedings of the sixth International Symposium on the Ordovician System.Rotterdam,Netherlands:A.A.Balkema,277-291.
• Chen X,Rong J,Wang X,Wang Z,Zhang Y,Zhan R.1995.Correlation of the Ordovician rocks of China:Charts and explanatory notes.International Union of Geological Sciences Publication,31:1-104.
• Fan R,Bergstr?m S M,Lu Y,Zhang X,Zhang S,Li X,Deng S.2015.Upper Ordovician carbon isotope chemostratigraphy on the Yangtze Platform,southwestern China:Implications for the correlation of the Guttenbergδ13C Excursion (GICE) and Paleoceanic change.Palaeogeography,Palaeoclimatology,Palaeoecology,433:81-90.
• Harper D A T.2006.The Ordovician biodiversification:Setting an agenda for marine life.Palaeogeography,Palaeoclimatology,Palaeoecology,232:148-166.
• Hatch J R,Jacobson S R,Witzke B J,Anders D E,Watney W L,Newell KD,Vuletich A.1987.Possible late Middle Ordovician organic carbon isotope excursion:Evidence from Ordovician oils and Hydrocarbon source rocks,mid-continent and east-central United States.AAPGBulletin (United States),71(11):1342-1354.
• Hayes J M,Strauss H,Kaufman A J.1999.The abundance of 13C in marine organic matter and isotopic fractionation in the global biogeochemical cycle of carbon during the past 800 Ma.Chemical Geology,161(1-3):103-125.
• Herrmann A D,Patzkowsky M E,Pollard D.2003.Obliquity forcing with8~12 times preindustrial levels of atmospheric p CO2 during the Late Ordovician glaciation.Geology,31(6):485.
• Hudson J D.1977.Stable isotope and limestone lithification.Journal of the Geological Society,136:157-164.
• Immenhauser A,Kenter J A M,Ganssen G.2002.Origin and significance of isotope shifts in Pennsylvanian carbonates (Asturias,NW Spain).Journal of Sedimentary Research,72(1):82-94.
• Kaljo D,Hints L,Martma,Nolvak J,Oraspold A.2004.Late Ordovician carbon isotope trend in Estonia,its significance in stratigraphy and environmental analysis.Palaeogeography,Palaeoclimatology,Palaeoecology,210:165-185.
• Laporte D F,Holmden C,Patterson W P,Loxton J D,Melchin M J,Mitchell C E,Finney S C,Sheets H D.2009.Local and global perspectives on carbon and nitrogen cycling during the Hirnantian glaciation.Palaeogeography,Palaeoclimatology,Palaeoecology,276:182-195.
• Liu C,Qi L,Liu Y,Luo M,Shao X,Luo P,Zhang Z.2016.Positive carbon isotope excursions:Global correlation and genesis in the Middle-Upper Ordovician in the northern Tarim Basin,Northwest China.Petroleum Science,13(2):192-203.
• Ludvigson G A,Witzke B J,González L A.2004.Late Ordovician (Turinian-Chatfieldian) carbon isotope excursions and their stratigraphic and paleoceanographic significance.Palaeogeography,Palaeoclimatology,Palaeoecology,210(2-4):187-214.
• Ma X,Wang Z,Zhang Y,Song Y,Fang X.2015.Carbon isotope records of the Middle-Upper Ordovician transition in Yichang area,South China.Palaeoworld,24(1-2):136-148.
• Munnecke A,Calner M,Harper D A T,Servais T.2010.Ordovician and Silurian sea-water chemistry,sea level,and climate:A synopsis.Palaeogeography,Palaeoclimatology,Palaeoecology,296:389-413.
• Munnecke A,Zhang Y,Liu X,Cheng J.2011.Stable carbon isotope stratigraphy in the Ordovician of South China.Palaeogeography,Palaeoclimatology,Palaeoecology,307(1-4):17-43.
• Pancost R D,Freeman K H,Herrmann A D,Patzkowsky M E,Ainsaard L,Martma T.2013.Reconstructing Late Ordovician carbon cycle variations.Geochimica et Cosmochimica Acta,105:433-454.
• Patzkowsky M E,Slupik L M,Arthur M A,Pankost R D,Freeman K H.1997.Late Middle Ordovician environmental change and extinction:Harbinger of the Late Ordovician or continuation of Cambrian patterns?Geology,25(10):911-914.
• Ross J R P,Ross C A.1992.Ordovician sea-level fluctuations//Webby BD,Laurie J R (ed.).Global perspectives on Ordovician geology:Proceedings of the sixth International Symposium on the Ordovician System.Rotterdam,Netherlands:A.A.Balkema,327-335.
• Saltzman M R,Bergstr?m S M,Huff W,Kolata D R.2003.Conodont and graptolite biostratigraphy and the Ordovician (Early Chatfieldian,Middle Caradocian)δ13C excursion in North America and Baltoscandia:Implications for the interpretation of the relations between Millbrig and Kinnekulle K-bentonites.Insugeo,Serie Correlación Geológica,17:137-42.
• Saltzman M R,Thomas E.2012.Carbon isotope stratigraphy//Gradstein F,Ogg J,Schmitz M.The Geologic time scale.Amsterdam:Elsevier,207-232．
• Saltzman M R,Young S A.2005.Long-lived glaciation in the Late Ordovician?Isotopic and sequence-stratigraphic evidence from western Laurentia.Geology,33(2):109.
• Schmitz B,Bergstr?m S M,Wang X.2010.The middle Darriwilian (Ordovician)δ13C excurision (MDICE) discovered in the Yangtze Platform Succession in China:Implications of its first recorded occurrences outside Baltoscandia.Journal of the Geological Society,167:249-259.
• Sell B,Ainsaar L,Leslie S.2013.Precise timing of the Late Ordovician(Sandbian) super-eruptions and associated environmental,biological,and climatological events.Journal of Geological Society,170(5):711-714.
• Spangenberg J E,Herlec U.2006.Hydrocarbon biomarkers in the topla-mezica zinc-lead deposits,northern karavanke/drau range,slovenia:Paleoenvironment at the site of ore formation.Economic Geology,101(5):997-1021.
• Svensen H,Hammer?,Corfu F.2015.Astronomically forced cyclicity in the Upper Ordovician and U-Pb ages of interlayered tephra,Oslo region,Norway.Palaeogeography,Palaeoclimatology,Palaeoecology,418:150-159.
• Tobin K J,Bergstr?m S M,De La Garza P.2005.A mid-Caradocian (453Ma) drawdown in atmospheric p CO2 without ice sheet development?Palaeogeography,Palaeoclimatology,Palaeoecology,226(4):187-204.
• Torsvik T H,Cocks L R M.2013.New global palaeogeographical reconstructions for the Early Palaeozoic and their generation.Geological Society of London Memoirs,38 (1),5-24.
• Webby B D,Paris F,Droser M L.2004.The Great Ordovician Biodiversification Event.New York:Columbia University Press.
• Young S A,Saltzman M R,Ausich W I,Desrochers A,Kaljo D.2010.Did changes in atmospheric CO2 coincide with latest Ordovician glacial-inter glacial cycles?Palaeogeography,Palaeoclimatology,Palaeoecology,296:376-388.
• Young S A,Saltzman M R,Bergstr?m S M.2005.Upper Ordovician(Mohawkian) carbon isotope (δ13c) stratigraphy in eastern and central North America:Regional expression of a perturbation of the global carbon cycle.Palaeogeography,Palaeoclimatology,Palaeoecology,222(1):53-76.
• Young S A,Saltzman M R,Bergstr?m S M,Leslie S A,Chen X.2008.Pairedδ13Ccarb andδ13Corg records of Upper Ordovician (Sandbian-Katian) carbonates in North America and China:Implications for paleoceanographic change.Palaeogeography,Palaeoclimatology,Palaeoecology,270(1-2):166-178.
• Zhan R,Jin J.2007.Ordovician-Early Silurian (Llandovery) Stratigraphy and Palaeontology of the Upper Yangtze Platform,South China.Beijing:Science Press.
• Zhan R,Jin J,Liu J,Corcoran P,Luan X,Wei X.2015.Meganodular limestone of the Pagoda Formation:A Time-specific carbonate facies in the Upper Ordovician of South China.Palaeogeography,Palaeoclimatology,Palaeoecology,448:349-362.
• Zhan R,Liu J.2010.The great Ordovician biodiversification in South China:A synopsis//Long M,Gu H,Zhou Z (eds.).Darwin’s Heritage Today--Proceedings of the Darwin 200 Beijing International Conference.Beijing:Higher Education Press,270-284.
• Zhang T,Shen Y,Algeo T J.2010.High-resolution carbon isotopic records from the Ordovician of South China:Links to climatic cooling and the Great Ordovician Biodiversification Event(GOBE).Palaeogeography,Palaeoclimatology,Palaeoecology,289:102-112．
• Zhang Y,Munnecke A.2016.Ordovician stable carbon isotope stratigraphy in the Tarim Basin,NW China.Palaeogeography,Palaeoclimatology,Palaeoecology,458:154-175.