凌超豪,张智,贾玉连,罗淑元,蒋梅鑫,廖富强,王野乔,范志伟

• 1:江西师范大学地理与环境学院鄱阳湖湿地与流域研究教育部重点实验室
• 2:中国科学院南京地理与湖泊研究所
• 3:南昌大学人文学院

摘要(Abstract)：

中晚更新世以来长江中下游地区粉尘堆积广泛发育,这些广义上可称之为"下蜀土"的区域粉尘堆积,典型代表有"九江下蜀土"、"安徽下蜀土"、"南京下蜀土"。其形成的年代及其粉尘堆积属性已基本明了,但是其物质来源却存在较大争议。详细分析了这些粉尘的元素地球化学特征,并与黄土高原黄土和红土进行了对比,结果表明:1)长江中下游的下蜀黄土均非来自北方的黄土高原,且九江、安徽、南京三地物源相互之间也存在显著差异,均为近源堆积,北方粉尘的作用过去被严重高估了;2)冰期背景下,长江中下游地区气候普遍恶化,区内大面积沙化和厚层粉尘堆积是现代亚热带湿润季风区对冰期气候环境响应的结果,是特殊地形条件和气候背景下冬季风近地面气流侵蚀—搬运裸露的河(湖)漫滩而形成的区域风沙—粉尘堆积体系,长江流域这种区域堆积体系及其地环境与地生态效应在以往的研究中没有得到应有的重视和认识。

关键词(KeyWords)： 化学地层;黄土沉积;物源示踪;环境变化;第四纪;长江中下游地区

Abstract:

Keywords:

基金项目(Foundation): 江西省重大生态安全问题监控协同创新中心项目(编号:JXS-EW-00);; 国家自然科学基金(41262007);; 鄱阳湖湿地与流域研究教育部重点实验室(江西师范大学)开放基金(编号:ZK2013003);; 江西省教育厅科学技术研究项目(编号:8884)资助

作者(Author): 凌超豪,张智,贾玉连,罗淑元,蒋梅鑫,廖富强,王野乔,范志伟

DOI: 10.19839/j.cnki.dcxzz.2018.03.009

参考文献(References)：

• 陈骏,李高军.2011.亚洲风尘系统地球化学示踪研究.中国科学(地球科学辑),41(09):1211-1232.
• 陈玉美,舒强,张茂恒等.2014.南京下蜀黄土记录的250~100ka期间的环境演化信息.地质科技情报,(6):55-59.
• 冯连君,储雪蕾,张启锐等.2003.化学蚀变指数(CIA)及其在新元古代碎屑岩中的应用.地学前缘,10(4):539-544.
• 管后春,李运怀,刘道彬等.2015.合肥盆地下蜀黄土年龄及物源探讨.中国地质.(2):664-675.
• 胡亚萍,贾玉连,张智等.2013.粒度揭示的末次间冰期以来长江中游风沙-风尘体系.中国沙漠,33(5):1324-1332.
• 黄汲清.1941.江南大陆--扬子江以南之加里东宁山脉.地质论评,6(Z2):293-294.
• 黄姜侬,方家骅,邵家骥等.1988.南京下蜀黄土沉积时代的研究.地质论评,34(3):240-247.
• 蒋复初,吴锡浩,孙东怀等.1998.中原邙山黄土地层.地质力学学报.4(4):12-18.
• 蒋复初,吴锡浩,肖华国等.1997.九江地区网纹红土的时代.地质力学学报.3(4):27-32.
• 赖忠平,周杰,夏应菲等.2001.南京下蜀黄土红外释光测年.自然科学进展:国家重点实验室通讯,11(2):203-207.
• 黎兴国,何娟华,李德生等.1993.ESR在下蜀黄土测年中的尝试.南京师大学报(自然科学版),(3):86-91.
• 李吉均,张林源,邓养鑫等.1983.庐山第四纪环境演变和地貌发育问题.中国科学(球科学辑),13(8):734-745.
• 李敬卫,乔彦松,王燕等.2009.江西九江红土堆积的粒度特征及成因研究.地质力学学报.15(1):95-104.
• 李立文,方邺森.1985.南京老虎山“下蜀组”钙质结核的成因与时代的探讨.地层学杂志.9(1):56-59.
• 李楠,郝青振,张绪教等.2016.东秦岭黄土物源的常量元素和微量元素地球化学证据.第四纪研究,36(2):332-346.
• 李徐生,韩志勇,杨达源等.2006.镇江下蜀黄土的稀土元素地球化学特征研究.土壤学报,43(1):1-7.
• 李徐生,韩志勇,杨守业等.2007.镇江下蜀土剖面的化学风化强度与元素迁移特征.地理学报,62(11):1174-1184.
• 李徐生,杨达源,鹿化煜.2001.镇江下蜀黄土粒度特征及其成因初探.海洋地质与第四纪地质,21(1):25-32.
• 李洋,李徐生,韩志勇等.2016.黄土不同粒级稀土元素分布特征及其制约因素.土壤学报,53(4):972-984.
• 吕拉昌.2016.中国地理(第2版).北京:科学出版社.1-487.
• 刘东生.1985.黄土与环境.北京:科学出版社.7-12.
• 马振兴,余志庆.2001.江西九江长虹大道第四纪地层剖面特征.地质通报,20(4):352-358.
• 乔彦松,郭正堂,郝青振等.2003.皖南风尘堆积-土壤序列的磁性地层学研究及其古环境意义.科学通报,48(13):1465-1469.
• 邵家骥.1988.长江下游第四纪下蜀黄土的成因探讨.地质通报.(4):26-33.
• 施雅风.2010.论李四光教授的庐山第四纪冰川是对泥石流的误读.地质论评,56(5):683-692.
• 孙继敏.2004.中国黄土的物质来源及其粉尘的产生机制与搬运过程.第四纪研究,24(2):175-183.
• 吴标云.1985.南京下蜀黄土沉积特征研究.海洋地质与第四纪地质,(2):115-125.
• 熊尚发,丁仲礼.1999.赣北红土与北京邻区黄土及沙漠砂的粒度特征对比.科学通报,44(11):1216-1219..
• 徐迎璋.1991.对合肥地区“下蜀土”时代、形成环境的探讨.安徽地质,(1):54-66.
• 杨达源,韩辉友,周旅复等.1991.安徽宣城地区中晚更新世风成堆积与环境变迁.海洋地质与第四纪地质,(2):97-104.
• 杨怀仁.1995.长江中下游环境变迁与地生态系统.南京:河海大学出版社.1-193.
• 杨守业,李从先,李徐生,王爱萍.2001.长江下游下蜀黄土化学风化的地球化学研究.地球化学,30(4):402-406.
• 殷志强,秦小光,李玉梅,宁波.2008.源区距离对黄土粒度多组分分布特征的影响.中国地质,35(5):1037-1044.
• 于振江,黄多成.1996.安徽省沿江地区网纹红土和下蜀土的形成环境及其年龄.安徽地质,(3):48-56.
• 张建军,杨达源,陈曰友,李徐生,蒋红俊.2000.长江中下游地区下蜀黄土磁化率曲线与环境变迁.沉积学报,18(1):18-21.
• 张建新,蔡明理,张兆千,汪永进.1994.南京下蜀黄土古气候序列的初步研究.地质学刊,(3):189-194.
• 张智,贾玉连,彭学敏,凌光久,王朋岭.2014.赣北鄱阳湖地区黄土元素地球化学特征研究.长江流域资源与环境,23(8):1125-1131.
• 郑乐平,胡雪峰,方小敏.2002.长江中下游地区下属黄土成因研究的回顾.矿物岩石地球化学通报,21(1):54-57.
• 郑祥民,严钦尚.1995.末次冰期苏北平原和东延海区的风尘黄土沉积.第四纪研究,15(3):258-266.
• 郑祥民.1999.长江三角洲及海域风尘沉积与环境.上海:华东师范大学出版社.
• 庄检平,贾玉连,马春梅,胡忠,张海荣,吴敬禄.2007.末次冰期间冰阶晚期长江中游风尘堆积及环境意义.沉积学报,25(3):424-428.
• A O V.1911.The question of the origin of loess-in defence of theolian hypothesis.Izvüstiya Tomskago Tekhnologicheskago Instituta,1911:33-38.
• Barth M G,Mcdonough W F,Rudnick R L.2000.Tracking the budget of Nb and Ta in the continental crust.Chemical Geology,165(3-4):197-213.
• Bhatia M R&Crook K A.1986.Trace element characteristics of graywackes and tectonic setting discrimination of sedimentary basins.Contributions to Mineralogy,Petrology.92(2):181-193.
• Broecker W S&Peng T H.1982.Tracers in the Sea.Palisades.
• Cox R,Lowe D R&Cullers R L.1995.The influence of sediment recycling and basement composition on evolution of mudrock chemistry in the southwestern United States.Geochimica et Cosmochimica Acta.59(14):2919-2940.
• Gallet S,Jahn B M&Torii M.1996.Geochemical characterization of the Luochuan loess-paleosol sequence,China,and paleoclimatic implications.Chemical Geology,133(1-4):67-88.
• Guan Q,Pan B,Gao H et al.2008.Geochemical evidence of the Chinese loess provenance during the Late Pleistocene.Palaeogeography Palaeoclimatology Palaeoecology,270(2):53-58.
• Guo Z T,Peng S Z,Hao Q Z et al.2001.Origin of the Miocene-Pliocene Red-Earth Formation at Xifeng in Northern China and implications for paleoenvironments.Palaeogeography Palaeoclimatology Palaeoecology,170(1-2):11-26.
• Hao Q,Guo Z,Qiao Y et al.2010.Geochemical evidence for the provenance of middle Pleistocene loess deposits in southern China.Quaternary Science Reviews,23-24(29):3317-3326.
• Heller F&Liu T S.1982.Magnetostratigraphical dating of loess deposits in China.Nature,300(5891):431-433.
• Hu X F&Gong Z.A 1999."Yellow Cap"on Quaternary Red Clay in Jiujiang,Jiangxi Province.PEDOSPHERE,9(4):311-318.
• Jia Y L,Lai Z P,Zhang J R et al.2012.Chronology and provenance of aeolian sediments from Poyang Lake area in the middle reaches of the Yangtze River in China.Quaternary Geochronology,10(3):44-49.
• Lai Z P,Zhang W G,Chen X et al.2010.OSL chronology of loess deposits in East China and its implications for East Asian monsoon history.Quaternary Geochronology,5(2):154-158.
• Li F,Jin Z,Xie C et al.2007.Roles of sorting and chemical weathering in the geochemistry and magnetic susceptibility of Xiashu loess,East China.Journal of Asian Earth Sciences,29(5-6):813-822.
• Liu F,Li G&Chen J.2014.U-Pb ages of zircon grains reveal a proximal dust source of the Xiashu loess,Lower Yangtze River region,China.Chinese Science Bulletin,59(20):2391-2395.
• Mclennan S M.1989.Rare earth elements in sedimentary rocks:influence of provenance and sedimentary processes.Reviews in Mineralogy,21(8):169-200.
• Moss B.1973.The influence of environmental factors on the distribution of freshwater algae:an experimental study:IV.Growth of Test Species in Natural Lake Waters,and Conclusion.Journal of Ecology,61(1):193-211.
• Muhs D R&Bettis I E A.2000.Geochemical variations in Peoria Loess of Western Iowa indicate paleowinds of midcontinental North America during last glaciation.Quaternary Research,53(1):49-61.
• Muhs D R&Bettis I E A.2003.Quaternary loess-Paleosol sequences as examples of climate-driven sedimentary extremes.Extreme depositional environments:mega end members in geologic time.Special Paper,370:53-74.
• Muhs D R,Bettis E A,Aleinikoff J N et al.2008.Origin and paleoclimatic significance of late Quaternary loess in Nebraska:Evidence from stratigraphy,chronology,sedimentology,and geochemistry.Geological Society of America Bulletin,120(11-12):1378-1407.
• Muhs D R,Budahn J R&Skipp G L et al.2016.Geochemical evidence for seasonal controls on the transportation of Holocene loess,Matanuska Valley,southern Alaska,USA.Aeolian Research,21:61-73.
• Muhs D R,Lancaster N&Skipp G L.2017.A complex origin for the kelso dunes,mojave national preserve,california,USA.a case study using a simple geochemical method with global applications.Geomorphology,276:222-243.
• Nie J,Stevens T,Rittner M et al.2016.Loess Plateau storage of Northeastern Tibetan Plateau-derived Yellow River sediment.Science Foundation in China.6(1):8511.
• Qiao Y,Hao Q&Peng S et al.2011.Geochemical characteristics of the eolian deposits in southern China,and their implications for provenance and weathering intensity.Palaeogeography Palaeo-climatology Palaeoecology,308(3):513-523.
• SFEZF.1945.New reconstructions of the woolly rhinoceros and merck's rhinoceros.Proceedings of the Linnean Society of London,156(3):183-195.
• Sheldon N D&Tabor N J.2009.Quantitative paleoenvironmental and paleoclimatic reconstruction using paleosols..Earth Science Reviews,95(1):1-52.
• Smalley I.1990.Possible formation mechanisms for the modal coarse-silt quartz particles in loess deposits.Quaternary International,(s 7-8):23-27.
• Sugitani K,Horiuchi Y,Adachi M et al.1996.Anomalously low Al2O3/Ti O2 values for Archean cherts from the Pilbara Block,Western Australia:possible evidence for extensive chemical weathering on the early earth.Precambrian Research,80(1):49-76.
• Sun J.2002.Provenance of loess material and formation of loess deposits on the Chinese Loess Plateau.Earth&Planetary Science Letters,203(3):845-859.
• Sun Y,Chen H,Tada R et al.2013.ESR signal intensity and crystallinity of quartz from Gobi and sandy deserts in East Asia and implication for tracing Asian dust provenance.Geochemistry Geophysics Geosystems,14(8):2615-2627.
• Taylor S R&Mclennan S M.1985.The continental crust:its composition and evolution,an examination of the geochemical record preserved in sedimentary rocks.Carlton:Blackwell Scientific Publication.1-312.
• Taylor S R&Mclennan S M.1995.The geochemical evolution of the continental crust.Reviews of Geophysics,33(2):293-301.
• Tsoar H&Pye K.1987.Dust transport and the question of desert loess formation.Sedimentology,34(1):139-153.