摘要
江口冰期和南沱冰期是华南地区引人注目的 2次成冰纪冰川事件,但其确切启动时间及其全球对比关系仍未有定论。为此,对桂北地区成冰系(南华系)长安组底部和南沱组底部冰成杂砾岩开展了碎屑锆石U-Pb年代学研究。长安组碎屑锆石U-Pb年龄集中分布于958—717 Ma,显著峰值为720、753、805及848 Ma,最年轻一组206Pb/238U年龄的加权平均值为719.6±6.1 Ma,可解释为长安组最大沉积年龄;南沱组碎屑锆石U-Pb年龄集中分布于987—649 Ma,显著峰值为650、720、753、779、803、823及848 Ma,最年轻一组206Pb/238U年龄的加权平均值为649.3±6.2 Ma,可解释为南沱组最大沉积年龄。结合已发表的相关年龄数据可知,江口冰期很可能启动于ca.715 Ma,与塔里木、阿拉伯—努比亚、劳伦等陆块的Sturtian冰川作用高度同步;南沱冰期的启动应晚于650 Ma,与西伯利亚、澳大利亚、劳伦等陆块的Marinoan冰川作用基本同步。另外,碎屑锆石U-Pb年龄谱与CL图像显示,长安组和南沱组的物质来源主要为下伏新元古界岩浆—沉积记录,揭示出冰川对下伏地层的强烈刨蚀作用和华南新元古代幕式构造岩浆热事件。扬子陆块成冰纪冰川刨蚀作用可能与Rodinia超大陆"裂离"有关的强烈伸展活动存在联系,并可能持续至Marinoan冰期结束。
It's well known that the Jiangkou and Nantuo glaciations are two remarkable Cryogenian glaciations in South China. However,their precise onset time and global correlations remain undecided. In this study,detrital zircon LA-ICP-MS U-Pb dating was performed on the glacial diamictites from the basal part of the Chang'an and Nantuo Formations in the southeastern Yangtze Block. The new results show that detrital zircon grains from the Chang'an Formation give a concentrated206 Pb/238 U age range of 958 to 717 Ma with distinct peaks at 720,753,805 and 848 Ma. The youngest age population yields a weighted mean of 719. 6±6. 1 Ma,representing the maximum depositional age of the Chang'an Formation. Detrital zircon grains from the Nantuo Formation has a main206 Pb/238 U age range between 987 and 649 Ma,with distinct peaks at 650,720,753,803,823 and 848 Ma. The youngest age population gives a weighted mean of 649. 3±6. 2 Ma,representing the maximum depositional age of the Nantuo Formation. Taking into account the available age data,it is suggested that the Jiangkou glaciation was most likely initiated at ca.715 Ma,which is synchronous with the Sturtian glaciation in other blocks such as Tarim,Arabia-Nubia and Laurentia; the Nantuo glaciation was probably initiated later than 650 Ma, synchronous with the Marinoan glaciation in other blocks such as Siberia,Australia and Laurentia. Furthermore,detrital zircon U-Pb age spectrums and CL images indicate that sediments of the Chang'an and Nantuo Formations in the Yangtze Block were mainly derived from the underlying Neoproterozoic magmatic and sedimentary rocks,indicative of the intensive Neoproterozoic severe exaration and episodic tectonic-thermal events. The Cryogenian exaration in the Yangtze Block should be the response to the breakup of the Rodinia supercontinent prior to the termination of the global Marinoan glaciation.
引文
柏道远,马铁球,钟响,李彬,熊雄.2015.萍乡东桥岩门寨组凝灰岩LA-ICP-MS锆石U-Pb年龄及南华冰期底界年代探讨.岩石矿物学杂志,34(5):637-647.[Bai D Y,Ma T Q,Zhong X,Li B,Xiong X.2015.Zircon LA-ICP-MS U-Pb dating of the tuff of Yanmenzhai Formation in Dongqiao,Pingxiang,with a discussion on the bottom age of Nanhua System.Acta Petrologica et Mineralogica,34(5):637-647]
崔晓庄,江新胜,王剑,卓皆文,熊国庆,陆俊泽,邓奇,伍皓,刘建辉.2013.滇中新元古代澄江组层型剖面锆石U-Pb年代学及其地质意义.现代地质,27(3):547-556.[Cui X Z,Jiang X S,Wang J,Zhuo J W,Xiong G Q,Lu J Z,Deng Q,Wu H,Liu J H.2013.Zircon U-Pb geochronology for the stratotype section of the Neoproterozoic Chengjiang Formation in central Yunnan and its geological significance.Geoscience,27(3):547-556]
崔晓庄,江新胜,邓奇,王剑,卓皆文,任光明,蔡娟娟,伍皓,江卓斐.2016.桂北地区丹洲群锆石U-Pb年代学及对华南新元古代裂谷作用期次的启示.大地构造与成矿学,40(5):1049-1063.[Cui X Z,Jiang X S,Deng Q,Wang J,Zhuo J W,Reng G M,Cai JJ,Wu H,Jiang Z F.2016.Zircon U-Pb geochronological results of the Danzhou Group in northern Guangxi and their implications for the Neoproterozoic rifting stages in South China.Geotectonica et Metallogenia,40(5):1049-1063]
杜秋定,汪正江,王剑,卓皆文,谢尚克,邓齐,杨菲.2013.湘中长安组碎屑锆石LA-ICP-MS U-Pb年龄及其地质意义.地质论评,59(2):334-344.[Du Q D,Wang Z J,Wang J,Zhuo J W,Xie SK,Deng Q,Yang F.2013.LA-ICP-MS U-Pb ages of detrital zircons from the Neoproterozoic Chang'an Formation in central Hunan and its geological implication.Geological Review,59(2):334-344]
高林志,陆济璞,丁孝忠,王汉荣,刘燕学,李江.2013.桂北地区新元古代地层凝灰岩锆石U-Pb年龄及地质意义.中国地质,40(5):1443-1452.[Gao L Z,Lu J P,Ding X Z,Wang H R,Liu Y X,Li J.2013.Zircon U-Pb dating of Neoproterozoic tuff in South Guangxi and its implications for stratigraphic correlation.Geology in China,40(5):1443-1452]
高维,张传恒.2009.长江三峡黄陵花岗岩与莲沱组凝灰岩的锆石SHRIMP U-Pb年龄及其构造地层意义.地质通报,28(1):45-50.[Gao W,Zhang C H.2009.Zircon SHRIMP U-Pb ages of the Huangling granite and the tuff beds from Liantuo Formation in Three Gorges area of Yangtze River,China and its geological significance.Geological Bulletin of China,28(1):45-50]
韩坤英,王梁,丁孝忠,任留东,高林志,刘燕学,庞健峰,薛玖红.2016.桂北地区南华系沉积物源分析:来自碎屑锆石U-Pb年龄的证据.岩石学报,32(7):2066-2180.[Han K Y,Wang L,Ding X Z,Ren L D,Gao L Z,Liu Y X,Pang J F,Xue J H.2016.Provenance of sedimentary rocks of Nanhua System in the northern Guangxi Province:Evidence from detrital zircon U-Pb ages.Acta Petrological Sinica,32(7):2066-2180]
江卓斐.2016.扬子西缘新元古代冰川启动时间、期次及其构造-岩相古地理演化.中国地质大学(北京)博士论文:1-158.[Jiang Z F.2016.Onset time and periods of the Neoproterozoic glaciers in Western Yangtze Block and the tectonic-lithofacies palaeogeography.The Doctoral Dissertation of China University of Geosciences(Beijing):1-158]
李忠,高剑.2016.构造活动区特征源汇体系及古地理重建:以塔里木块体北缘记录“泛非”事件的碎屑锆石分析为例.古地理学报,18(3):424-440.[Li Z,Gao J.2016.Characteristic sourcesink systems and palaeogeographic reconstruction in active tectonic regions:A case research on detrital zircons recording the Pan-African event in northern Tarim Block.Journal of Plalaeogeography(Chinese Edition),18(3):424-440]
刘鸿允,董榕生,李建林,杨彦均.1980.论震旦系划分与对比问题.地质科学,15(4):307-321.[Liu H Y,Dong R S,Li J L,Yang YJ.1980.Problems of classification and correlation of the Sinian System.Scientia Geologica Sinica,15(4):307-321]
刘建清,赵瞻,林家善,冯伟明,黄学平,魏洪刚.2015.南华系底界年龄:SHRIMPⅡ定年新证据.矿物岩石,35(3):35-40.[Liu JQ,Zhao Z,Lin J S,Fen W M,Huang X P,Wei H G.2015.The age of bottom boundary of the Nanhua System:New evidence of SHRIMPⅡdating.Journal of Mineralogy and Petrology,35(3):35-40]
马国干,张自超,李华芹,陈平,黄照先.1989.扬子地台同位素年代地层学研究.中国地质科学院宜昌地质矿产研究所文集,14:83-124.[Ma G G,Zhang Z C,Li H Q,Chen P,Huang Z X.1989.Ageochronological study of the Sinian System in Yangtze Platform.Bulletin of Yichang Institute of Geology and Mineral Resources,14:83-124]
覃永军,杜远生,牟军,卢定彪,龙建喜,王安华,张厚松,曾昌兴.2015.黔东南地区下江群的地层年代及其地质意义.地球科学,40(7):1107-1120.[Qin Y J,Du Y S,Mou J,Lu D B,Long J X,Wang A H,Zhang H S,Zeng C X.2015.Geochronology of Neoproterozoic Xiajiang Group in southeast Guizhou,South China,and its geological implications.Earth Science,40(7):1107-1120]
孙海清,黄建中,杜远生,罗来,伍皓.2014.扬子地块东南缘南华系长安组同位素年龄及其意义.地质科技情报,33(2):17-27.[Sun H Q,Huang J Z,Du Y S,Luo L,Wu H.2014.Isotope ages and significance of Nanhuaian Chang'an formation in the southeastern Yangtze Craton.Geological Science and Technology Information,33(2):17-27]
汪正江,许效松,杜秋定,杨菲,邓奇,伍皓,周小琳.2013.南华冰期的底界讨论:来自沉积学与同位素年代学证据.地球科学进展,28(4):477-489.[Wang Z J,Xu X S,Du Q D,Yang F,Deng Q,Wu H,Zhou X L.2013.Discussion on the bottom of Nanhua System:Evidences from sedimentology and isotopic geochronology.Advances in Earth Science,28(4):477-489]
汪正江,王剑,江新胜,孙海清,高天山,陈建书,邱艳生,杜秋定,邓齐,杨菲.2015.华南扬子地区新元古代地层划分对比研究新进展.地质评论,61(1):1-22.[Wang Z J,Wang J,Jiang X S,Sun H Q,Gao T S,Cheng J S,Qiu Y S,Du Q D,Deng Q,Yang F.2015.New progress for the stratigraphic division and correlation of Neoproterozoic in Yangtze Block,South China.Geological Review,61(1):1-22]
伍皓,江新胜,王剑,汪正江,杜秋定,邓奇,崔晓庄,杨菲.2013.湘东南新元古界大江边组和埃岐岭组的形成时代和物源:来自碎屑锆石U-Pb年代学的证据.地质论评,59(5):853-868.[Wu H,Jiang X S,Wang J,Wang Z J,Du Q D,Deng Q,Cui X Z,Yang F.2013.Ages and provenance of the Neoproterozoic Dajiangbian Formation and Aiqiling Formation in Southeast Hunan Province:U-Pb geochronological evidence of detrital zircons.Geological Review,59(5):853-868]
尹崇玉,王砚耕,唐烽,万渝生,王自强,高林志,邢裕盛,刘鹏举.2006.贵州松桃南华系大塘坡组凝灰岩锆石SHRIMPⅡU-Pb年龄.地质学报,80(2):273-278.[Yin C Y,Wang Y G,Tang F,Wan Y S,Wang Z Q,Gao L Z,Xing Y S,Liu P J.2006.SHRIMPII U-Pb zircon date from the Nanhuan Datangpo Formation in Songtao County,Guizhou Province.Acta Geologica Sinica,80(2):273-278]
余文超,杜远生,周琦,金中国,汪小妹,覃永军,崔滔.2014.黔北务正道地区下二叠统铝土矿层物源研究:来自碎屑锆石年代学的证据.古地理学报,16(1):19-29.[Yu W C,Du Y S,Zhou Q,Jin Z G,Wang X M,Qin Y J,Cui T.2014.Provenance of bauxite beds of the Lower Permian in Wuchuan-Zheng'an-Daozhen area,northern Guizhou Province:Evidence from detrital zircon chronology.Journal of Plalaeogeography(Chinese Edition),16(1):19-29]
余文超,杜远生,周琦,王萍,袁良军,徐源,潘文,谢小峰,齐靓,焦良轩.2016.黔东松桃地区大塘坡组LA-ICP-MS锆石U-Pb年龄及其地质意义.地质论评,62(3):539-549.[Yu W C,Du Y S,Zhou Q,Wang P,Yuan L J,Xu Y,Pan W,Xie X F,Qi L,Jiao L X.2016.LA-ICP-MS Zircon U-Pb dating from the Nanhuan Datangpo Formation in Songtao area,East Guizhou and its geological significance.Geological Review,62(3):539-549]
张启锐,储雪蕾.2006.扬子地区江口冰期地层的划分对比与南华系层型剖面.地层学杂志,30(4):306-314.[Zhang Q R,Chu X L.2006.The stratigraphic classification and correlation of the Jiangkou glaciation in the Yangtze Block and the stratotype section of the Nanhua System.Journal of Stratigraphy,30(4):306-314]
张世红,蒋干清,董进,韩以贵,吴怀春.2008.华南板溪群五强溪组SHRIMP锆石U-Pb年代学新结果及其构造地层学意义.中国科学,38(12):1496-1503.[Zhang S H,Jiang G Q,Dong J,Han Y G,Wu H C.2008.New SHRIMP U-Pb age from the Wuqiangxi Formation of Banxi Group:Implications for rifting and stratigraphic erosion associated with the early Cryogenian(Sturtian)glaciation in South China.Science China:Earth Science,38(12):1496-1503]
《中国地质图集》编委会.2002.中国地质图集·南岭地区地质图.北京:地质出版社.[China's Geological Atlas editorial board.2002.China's Geological Atlas·Geological Map of Nanling Region.Beijing:Geological Publishing House]
Allen P A,Bowring S,Leather J,Braiser M D,Cozzi A,Grotzinger J P,Mc Carron G,Amthor J E.2002.Chronology of Neoproterozoic glaciations:New insights from Oman:The 16th International Sedimentological Congress,Abstract Volume:7-8.
Black L P,Kamo S L,Williams I S,Mundil R,Davis D W,Korsch R J,Foudoulis C.2003.The application of SHRIMP to Phanerozoic geochronology:A critical appraisal of four zircon standards.Chemical Geology,200:171-188.
Bowring S A,Grotzinger J P,Condon D J,Ramezani J,Newall M J,Allen P A.2007.Geochronological constraints on the chronostratigraphic framework of the Neoproterozoic Huqf Supergroup,Sultanate of O-man.American Journal of Science,307:1097-1145.
Brasier M,Mccarron G,Tucker R,Leather J,Allen P,Shields G.2000.New U-Pb zircon dates for the Neoproterozoic Ghubrah glaciation and for the top of the Huqf Supergroup,Oman.Geology,28(1):175-178.
Bruguier O,Lancelot J R,Malavieille J.1997.U-Pb dating on single detrital zircon grains from the Triassic Songpan-Ganze flysch(Central China):Provenance and tectonic correlations.Earth and Planetary Science Letters,152:217-231.
Canfield D E,Teske A.1996.Late Proterozoic rise in atmospheric oxygen concentration inferred from phylogenetic and sulphur-isotope studies.Nature,382:127-132.
Canfield D E,Poulton S W,Narbonne G M.2007.Late-Neoproterozoic deep-ocean oxygenation and the rise of animal life.Science,315(5808):92-95.
Condon D,Zhu M Y,Bowring S,Wang W,Yang A H,Jin Y G.2005.U-Pb ages from the Neoproterozoic Doushantuo Formation,China.Science,308:95-98.
Dickinson W R,Gehrels G E.2009.Use of U-Pb ages of detrital zircons to infer maximum depositional ages of strata:A test against a Colorado Plateau Mesozoic database.Earth and Planetary Science Letters,288(1):115-125.
Du Q D,Wang Z J,Wang J,Qiu Y S,Jiang X S,Deng Q,Yang F.2013.Geochronology and paleoenvironment of the pre-Sturtian glacial strata:Evidence from the Liantuo Formation in the Nanhua rift basin of the Yangtze Block,South China.Precambrian Research,233:118-131.
Fanning C M,Link P K.2004.U-Pb SHRIMP ages of Neoproterozoic(Sturtian)glaciogenic Pocatello Formation,southeastern Idaho.Geology,32(10):881-884.
Fanning C M,Link P K.2006.Constraints on the timing of the Sturtian glaciation from southern Australia:i.e.for the true Sturtian.Geological Society of America Abstracts with Programs,38(7):115.
Fanning C M,Link P K.2008.Age constraints for the Sturtian Glaciation:Data from the Adelaide Geosyncline,South Australia and Pocatello Formation,Idaho,USA.Geological Society of Australia Abstract,Selwyn Symposium 2008,Melboume,(91):57-62.
Heaman L M,Lecheminant A N,Rainbird R H.1992.Nature and timing of Franklin igneous events,Canada:Implications for a Late Proterozoic mantle plume and the break-up of Laurentia.Earth and Planetary Science Letters,109(1-2):117-131.
Hoffman P F,Schrag D P.2002.The snowball earth hypothesis:Testing the limits of global change.Terra Nova,14(3):129-155.
Hoffmann K H,Condon D J,Bowring S A,Crowley J L.2004.A U-Pb zircon date from the Neoproterozoic Ghaub Formation,Namibia:Constraints on Marinoan glaciation.Geology,32:817-820.
Ingólfsson,Lokrantz H.2003.Massive ground ice body of glacial origin at Yugorski Peninsula,Arctic Russia.Permafr.Periglac.Process,14(3):199-215.
Ireland T R,Fl9ttmann T,Fanning C M,Gibson G M,Preiss W V.1998.Development of the Early Paleozoic pacific margin of Gondwana from detrital-zircon ages across the Delamerian orogen.Geology,26(3):243-246.
Jiang Z F,Cui X Z,Jiang X S,Wang J,Zhuo J W,Xiong G Q,Lu J Z,Wu H,Wei Y N.2016.New zircon U-Pb ages of the pre-Sturtian rift successions from the western Yangtze Block,South China and their geological significance.International Geology Review,58(9):1064-1075.
Kendall B S,Creaser R A,Ross G M,Selby D.2004.Constraints on the timing of Marinoan“Snowball Earth”glaciation by187Re-187Os dating of a Neoproterozoic,post-glacial black shale in western Canada.Earth and Planetary Science Letters,222(3):729-740.
Kendall B S,Creaser R A,Selby D.2006.Re-Os geochronology of postglacial black shales in Australia:Constraints on the timing of“Sturtian”glaciation.Geology,34(9):729-732.
Lan Z W,Li X H,Zhu M Y,Chen Z Q,Zhang Q R,Li Q L,Lu D B,Liu Y,Tang G Q.2014.A rapid and synchronous initiation of the wide spread Cryogenian glaciations.Precambrian Research,255:401-411.
Lan Z W,Li X H,Zhang Q R,Li Q L.2015a.Global synchronous initiation of the 2nd episode of Sturtian glaciation:SIMS zircon U-Pb and O isotope evidence from the Jiangkou Group,South China.Precambrian Research,267:28-38.
Lan Z W,Li X H,Zhu M Y,Zhang Q R,Li Q L.2015b.Revisiting the Liantuo Formation in Yangtze Block,South China:SIMS U-Pb zircon age constraints and regional and global significance.Precambrian Research,263:123-141.
Li X H.1999.U-Pb zircon ages of granites from the southern margin of the Yangtze Block:Timing of Neoproterozoic Jinning:Orogeny in SEChina and implications for Rodinia Assembly.Precambrian Research,97(1):43-57.
Li X H,Li Z X,Zhou H,Liu Y,Kinny P D.2002.U-Pb zircon geochronology,geochemistry and Nd isotopic study of Neoproterozoic bimodal volcanic rocks in the Kangdian Rift of South China:Implications for the initial rifting of Rodinia.Precambrian Research,113:135-154.
Li X H,Li Z X,Ge W C,Zhou H W,Li W X,Liu Y,Wingate M T D.2003a.Neoproterozoic granitoids in South China:Crustal melting above a mantle plume at ca.825 Ma.Precambrian Research,122(1):45-83.
Li X H,Li Z X,Zhou H W,Liu Y,Liang X R,Li W X.2003b.SHRIMPU-Pb zircon age,geochemistry and Nd isotope of the Guandaoshan pluton in SW Sichuan:Petrogenesis and tectonic significance.Science in China(Series D),46:73-83.
Li X H,Li W X,Li Z X,Liu Y.2008a.850-790 Ma bimodal volcanic and intrusive rocks in northern Zhejiang,South China:A major episode of continental rift magmatism during the breakup of Rodinia.Lithos,102(1):341-357.
Li Z X,Li X H,Kinny P D,Wang J.1999.The breakup of Rodinia:Did it start with a mantle plume beneath South China.Earth and Planetary Science Letters,173(3):171-181.
Li Z X,Bogdanova S V,Collins A S,Davidson A,Waele B D,Ernst R E,Fitzsimons I C W,Fuck R A,Gladkochub D P,Jacobs J,Karlstrom KE,Lu S,Natapov L M,Pease V,Pisarevsky S A,Thrane K,Vernikovsky V.2008b.Assembly,configuration,and break-up history of Rodinia:A synthesis.Precambrian Research,160(1):179-210.
Ling W L,Gao S,Zhang B R,Li H M,Liu Ying,Chen J P.2003.Neoproterozoic tectonic evolution of the northwestern Yangtze craton,South China:Implications for amalgamation and break-up of the Rodinia supercontinent.Precambrian Research,122(1-4):111-140.
Liu P J,Li X H,Chen S M,Lan Z W,Yang B,Shang X D,Yin C Y.2015.New SIMS U-Pb zircon age and its constraint on the beginning of the Nantuo glaciation.Science Bulletin,60(19):958-963.
Liu X M,Gao S,Diwu C R,Ling W L.2008.Precambrian crustal growth of Yangtze Craton as revealed by detrital zircon studies.American Journal of Science,308(4):421-468.
Liu Y S,Gao S,Hu Z C,Gao C G,Zong K Q,Wang D B.2010.Continental and oceanic crust recycling-induced melt peridotite interactions in the trans-North China Orogen:U-Pb dating,Hf isotopes and trace elements in zircons from mantle xenoliths.Journal of Petrology,51(1-2):537-571.
Ludwig K R.2003.User's Manual for Isoplot 3.00:A Geochronological Toolkit for Microsoft Excel.Berkeley:Berkeley Geochronological Center Special Publication,4.
Macdonald F A,Schmitz M D,Crowley J L,Roots C F,Jones D S,Maloof A C,Strauss J V,Cohen P A,Johnston D T,Schrag D P.2010.Calibrating the Cryogenian.Science,327(5970):1241-1243.
Nelson D R.2001.An assessment of the determination of depositional ages for Precambrian clastic sedimentary rocks by U-Pb dating of detrital zircons.Sedimentary Geology,141-142:37-60.
Rooney A D,Strauss J V,Brandon A D,Macdonald F A.2015.A Cryogenian chronology:Two long-lasting synchronous Neoproterozoic glaciations.Geology,43(5):459-462.
Semikhatov M A.1991.General problems of Proterozoic stratigraphy in the USSR.Soviet Scientific Reviews,Section G,Geology Reviews,(1):192.
Song G Y,Wang X Q,Shi X Y,Jiang G Q.2017.New U-Pb age constraints on the upper Banxi Group and synchrony of the Sturtian glaciation in South China.Geoscience Frontiers,8(5):1161-1173.
Sun W H,Zhou M F,Gao J F,Yang Y H,Zhao X F,Zhao J H.2009.Detrital zircon U-Pb geochronological and Lu-Hf isotopic constraints on the Precambrian magmatic and crustal evolution of the western Yangtze Block,SW China.Precambrian Research,172(1):99-126.
Wang J,Li Z X.2003.History of Neoproterozoic rift basins in South China:Implications for Rodinia breakup.Precambrian Research,122(1):141-158.
Wang L J,Yu J H,Griffin W L,O'Reilly S Y.2012a.Early crustal evolution in the western Yangtze Block:Evidence from U-Pb and Lu-Hf isotopes on detrital zircons from sedimentary rocks.Precambrian Research,222-223:368-385.
Wang X C,Li X H,Li Z X,Li Q L,Tang G Q,Gao Y Y,Zhang Q R,Liu Y.2012b.Episodic Precambrian crust growth:Evidence from U-Pb ages and Hf-O isotopes of zircon in the Nanhua Basin,central South China.Precambrian Research,222-223:386-403.
Wang Z J,Wang J,Du Q D,Deng Q,Liu H,Yang F.2016.Geochronological and geochemical evidence for the sedimentary transformation from the Banxi Period to Nanhua Glacial Period.Acta Geologica Sinica(English Edition),90(5):1915-1916.
Wu Y B,Zheng Y F,Tang J,Gong B,Zhao Z F,Liu X M.2007.Zircon U-Pb dating of water-rock interaction during Neoproterozoic rift magmatism in South China.Chemical Geology,246(1-2):65-86.
Xu B,Xiao S,Zou H,Chen Y,Li Z X,Song B,Liu D,Zhou C,Yuan X.2009.SHRIMP zircon U-Pb age constraints on Neoproterozoic Quruqtagh diamictites in NW China.Precambrian Research,168(3):247-258.
Yuan H L,Gao S,Liu X M,Li H M,Günther D,Wu F Y.2004.Accurate U-Pb age and trace element determinations of zircon by laser ablation-inductively coupled plasma-mass spectrometry.Geostandards and Geoanalytical Research,28(3):353-370.
Zhang Q R,Li X H,Feng L J,Huang J,Song B.2008a.A new age constraint on the onset of the Neoproterozoic glaciations in the Yangtze Platform,South China.Journal of Geology,116(4):423-429.
Zhang S H,Jiang G Q,Zhang J M,Song B,Kennedy M J,Christie-Blick N.2005.U-Pb sensitive high-resolution ion microprobe ages from the Doushantuo Formation in south China:Constraints on late Neoproterozoic glaciations.Geology,33(6):473-476.
Zhang S H,Jiang G Q,Han Y G.2008b.The age of the Nantuo Formation and Nantuo glaciation in South China.Terra Nova,20(4):289-294.
Zhou J B,Li X H,Ge W C,Li Z X.2007.Age and origin of Middle Neoproterozoic mafic magmatism in southern Yangtze Block and relevance to the break-up of Rodinia.Gondwana Research,12(1-2):184-197.
Zhou C M,Tucker R,Xiao S H,Peng Z X,Yuan X L,Chen Z.2004.New constraints on the ages of Neoproterozoic glaciations in south China.Geology,32(5):437-440.