南京长江四桥附近长江古河谷沉积层序
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摘要
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。
The sedimentary sequence near the No.4 Nangjing Yangtze River Bridge investigated. The Paleo-valley depositional sequence was established using bore hole data and geological mapping software. Sedimentary samples for ~14 C age determinatio and grain size analysis were collected respectively, from 3 drill cores and 10 drill cores near the No.4 Bridge. The sedimentary samples at -59.33m deep from drill core 01 gave a ~ 14 C age of is 14 682±110 aB.P., and those at -33.1~33.3 m from the drill cores 02 and 03 gave a ~ 14 C age of 10 822±240 aB.P. Analysis of sedimentary sequences and distribution of the representative drill cores shows that there are three sedimentary cycles in the paleo-valley. The first sedimentary cycle at -65~-90 m deep was deposited in the Last Glacial Maximum, this sedimentary cycle consists of in stratigraphically ascending order pebble gravel, gravel sand, coarse sand and medium sand. The second cycle at -65~-35 m deep was deposited in the Late Glacial Period. It consists of, in asceding order, pebble and gravel, gravel sand, coarse and medium sand, fine sand, and fine and powdery sand. The third cycle among from -35m to top was deposited in the Holocene, consisting of, in ascending order, fine sand, silty sand, muddy clay, and sandy clay.
The sedimentary sequence near the No.4 Nangjing Yangtze River Bridge investigated. The Paleo-valley depositional sequence was established using bore hole data and geological mapping software. Sedimentary samples for ~14 C age determinatio and grain size analysis were collected respectively, from 3 drill cores and 10 drill cores near the No.4 Bridge. The sedimentary samples at -59.33m deep from drill core 01 gave a ~ 14 C age of is 14 682±110 aB.P., and those at -33.1~33.3 m from the drill cores 02 and 03 gave a ~ 14 C age of 10 822±240 aB.P. Analysis of sedimentary sequences and distribution of the representative drill cores shows that there are three sedimentary cycles in the paleo-valley. The first sedimentary cycle at -65~-90 m deep was deposited in the Last Glacial Maximum, this sedimentary cycle consists of in stratigraphically ascending order pebble gravel, gravel sand, coarse sand and medium sand. The second cycle at -65~-35 m deep was deposited in the Late Glacial Period. It consists of, in asceding order, pebble and gravel, gravel sand, coarse and medium sand, fine sand, and fine and powdery sand. The third cycle among from -35m to top was deposited in the Holocene, consisting of, in ascending order, fine sand, silty sand, muddy clay, and sandy clay.
引文
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
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
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