曹光杰,王建,李彦彦

• 1:临沂师范学院实验中心
• 2:水土保持与环境保育山东省重点实验室
• 3:南京师范大学地理科学学院

摘要(Abstract)：

根据南京长江四桥附近地质钻孔资料,绘制长江古河谷地质剖面示意图。在3个钻孔采集了年代样品,10个钻孔采集了粒度样品。01号孔在-59.4m深度上河床相圆砾石层中沉积物样品有机质的14C年代为14682±110年,邻近钻孔在-33.1～-33.3m深度上粉细砂中有机质的14C年代为10822±240年。通过对典型钻孔沉积层序及沉积物颗粒级配的分析,得知古河谷充填了3期从粗到细的沉积旋回,约-65m以下深槽中的沉积旋回应是末次盛冰期沉积,约-65m～-35m的应是晚冰期沉积,约-35m以上是全新世以来的沉积。

关键词(KeyWords)： 沉积层序;古河谷;末次盛冰期;第四纪;长江四桥;南京;江苏

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金项目(No.40871010);; 国家重点基础研究发展规划(973计划)项目(No.2003CB415201-8)共同资助

作者(Author): 曹光杰,王建,李彦彦

DOI: 10.19839/j.cnki.dcxzz.2010.04.007

参考文献(References)：

• 曹光杰,王建,熊万英,张学勤.2006.江苏南京段末次盛冰期以来的古河谷沉积.海洋地质与第四纪地质,26(1):23—28
• 曹光杰,王建,张学勤,屈贵贤,白世彪,龚小辉.2009.末次盛冰期长江南京段河槽特征及古流量.地理学报,64(3):331—338
• 方金琪.1990.晚冰期以来海面上升对长江中下游河段影响的数值模拟.中国科学(B辑),20(8):870—878
• 蒋斯善,昂潮海,杨惠成,费锡铨.1986.南京市秦淮古河道及沉积物时代的初步研究.地质学报,60(1):89—99
• 李保华,李从先,沈焕庭.2002.冰后期长江三角洲沉积通量的初步研究.中国科学(D辑),32(9):776—783
• 李从先,陈庆强,范代读,张家强,杨守业.1999.末次盛冰期以来长江三角洲地区的沉积相和古地理.古地理学报,1(4):12—25
• 李从先,范代读,张家强.2000.长江三角洲地区晚第四纪地层及潜在环境问题.海洋地质与第四纪地质,20(3):1—7
• 李从先,李萍,成鑫荣.1983.海洋因素对镇江以下长江河段沉积的影响.地理学报,38(2):128—140
• 李从先,汪品先.1998.长江晚第四纪河口地层学研究.北京:科学出版社.12
• 李从先,张桂甲.1996.晚第四纪长江三角洲高分辨率层序地层学的初步研究.海洋地质与第四纪地质,16(3):13—24
• 杨达源.1986.晚更新世冰期最盛时长江中下游地区的古环境.地理学报,41(4):302—310
• 杨达源.1989.晚更新世末期以来长江中下游的水位变化.中国第四纪研究,8(1):114—119
• 杨怀仁,韩同春,杨达源,谢志仁.1983.长江下游晚更新世以来河道变迁的类型与机制.南京大学学报(自然科学版),(2):341—350
• 杨怀仁,徐馨,杨达源,黄家柱.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.87—93
• 张家强,张桂甲,李从先.1998.长江三角洲晚第四纪地层层序特征同济大学学报,26(4):438—442
• 中国科学院地理研究所,长江水利水电科学研究院.1985.长江中下游河道特性及其演变.北京:科学出版社.
• Cao Guang-jie,Wang jian,Xiong Wan-ying&Zhang Xue-qin.2006.Sedi mentary characteristics of the Yangtze River’s paleo-valleyin Nanjing since the Last Glaciation Maxi mum.MarineGeology&Quaternary Geology,26(1):23—28
• Cao Guang-jie,Wang Jian,Zhang Xue-qin,Qu Gui-xian,Bai Shi-bi-ao&Gong Xiao-hui.2009.Characteristics and runoff volume ofthe Yangtze River’s Paleo-valley at Nanjing reach in the LastGlacial Maxi mum.Acta Geographica Sinica,64(3):331—338
• Chen Zhong-yuan,Song Bao-ping,Wang Zhang-hua,et al.2000.Late Quaternary evolution of the Sub-apueous Yangtze Delta,China:sedi mentation stratigraphy,palynology,and deforma-tion.Marine Geology,162:423—441
• Fang Jin-qi.1990.the numerical analog of The sea-level rise affect-ing the Yangtze River middle and lower reaches since Late IceAge.Science in China(Series B),20(8):870—878
• Institute of Geography,the Chinese Academy of Sciences&YangtzeRiver Institute of Water Resources and Hydro-Power Research.1985.Channel properties and evolution in the Yangtze River’smiddle and lower reaches.Beijing:Science Press
• Jiang Si-san,Ang Chao-hai,Yang Hui-cheng&Fei Xi-quan.1986.Primary study on the Qinhuai River incised-valley and era ofsedi ment in Nanjing.Acta Geologica Sinica,60(1):89—99
• Li Bao-hua,Li Cong-xian&Shen Huan-ting.2002.A preli minarystudy on the aggradationflux at ice age anaphasein the YangtzeDelta.Science in China(series D),32(9):776—783
• Li Cong-xian,Chen Qing-qiang,Fan Dai-du,Zhang Jia-qiang&Yang Shou-ye.1999.Palaeogeography and palaeoenvironmentin Changjiang Delta since last glaciation.Journal of Palaeo-geography,1(4):12—25
• Li Cong-xian,Fan Dai-du&Zhang Jia-qiang.2000.Late Quaterna-ry stratigraphical framework and potential environmental prob-lemsinthe Yangtze Delta Area.Marine Geology&QuaternaryGeology,20(3):1—7
• Li Cong-xian,Li Ping,Cheng Xin-rong.1983.The influence of ma-rine factors on sedi mentary characteristics of Yangtze Riverchannel below Zhenjiang.Acta Geographica Sinica,38(2)128—140
• Li Congxian,Wang Ping,Sun He-pinget al.2002.Late Quaternaryincised-valley fill of the Yangtze delta(China):its stratigraphicframework and evolution.Sedi mentary Geology,152:133—158
• Li Cong-xian,Wang Pin-xian.1998.Researches on stratigraphy ofthe Late Quaternary Period in Yangtze River mouth.Beijing:Science press.12
• Li Cong-xian&Zhang Gui-jia.1996.Researches on high resolution sequence stratigraphy of the Yangtze Delta during late Quater-nary period.Marine Geology&Quaternary geology,16(3):13—24
• Okuda M,Satob Y,Tang L Het al.2003.Late Holocene vegetationand environment at Cauduntou,west of Yangtze Delta,SWJian-gsu Province,East China.QuaternaryInternational,105:39—47
• Yang Da-yuan.1986.The paleoenvironment of the mid-lower regionsof Changjiangin the full-glacial period of Late Pleistocene.ActaGeograpinca Sinica,41(4):302—310
• Yang Da-yuan.1989.Changes of water level in the Mid-lower rea-ches of the Changjiang River since the end of Late Pleistocene.Quaternary Sciences of China,8(1):114—119
• Yang Huai-ren,Han Tong-chun,Yang Da-yuan&Xie Zhi-ren.1983.Processes and causal mechanism of migrations of theChangjiang since Late Pleistocene.Journal of Nanjing Univer-sity(Natural science),(2):341—350
• Yang Huai-ren,Xu Xin,Yang Da-yuan&Huang Jia-zhu.1995.En-vironmental changes ands ecosystem in the Yangtze River’smiddle and lower reaches.Nanjing:Hehai University Press.87—93
• Zhang Jia-qiang,Zhang Gui-jia&Li Cong-xian.1998.Characteris-tics of the late Quaternary stratigraphic sequence in theChangjiang River Delta area.Journal of Tongji university,26(4):438—442