| 末次盛冰期以来长江南通段古河谷的地层特征 |
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| 引用本文： | 曹光杰,王建,屈贵贤.末次盛冰期以来长江南通段古河谷的地层特征[J].地层学杂志,2007,31(2):175-178. |
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| 作者姓名： | 曹光杰 王建 屈贵贤 |
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| 作者单位： | 1. 南京师范大学地理科学学院,江苏南京,210097;临沂师范学院地理与旅游学院,山东临沂,276005
2. 南京师范大学地理科学学院,江苏南京,210097 |
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| 基金项目： | 国家重点基础研究发展计划(973计划)专题“变化条件下长江下游河道演化的规律”(2003CB415201-8)，国家教育振兴计划教育部青年奖励基金(2001JBC12)共同资助。 |
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| 摘 要： | 通过对南通段古河谷典型钻孔及剖面沉积物颗粒、微体生物化石、14C测年等的分析,对末次盛冰期以来的沉积地层进行了划分。该段古河谷末次冰期以来的地层,基本上反映了河床相—河漫滩相—浅海相—三角洲相的冰后期海侵沉积旋回。现代河床的底部,浅海相淤泥质亚黏土层已被侵蚀掉,沉积的是现代河床相砂层。
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| 关 键 词： | 末次盛冰期 第四纪 长江南通段 江苏 古河谷 地层 |
| 文章编号： | 0253-4959(2007)02-0175-04 |
| 修稿时间： | 11 23 2006 12:00AM |
STRATIGRAPHIC FRAMEWORK CHARACTERISTICS OF THE YANGTZE RIVER'S INCISED VALLEY IN NANTONG SINCE THE LAST GLACIAL MAXIMUM |
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| CAO Guang-jie,WANG Jian,QU Gui-xian.STRATIGRAPHIC FRAMEWORK CHARACTERISTICS OF THE YANGTZE RIVER''''S INCISED VALLEY IN NANTONG SINCE THE LAST GLACIAL MAXIMUM[J].Journal of Stratigraphy,2007,31(2):175-178. |
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| Authors: | CAO Guang-jie WANG Jian QU Gui-xian |
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| Institution: | 1. School of Geography, Nanjing Normal University, Nanjing,210097 ; 2.School of Geography and Tourism, Linyi Normal University, Linyi,276005 |
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| Abstract: | By analyzing the sedimentary particlessize, microfossil and 14 C dating of the sediment cores and cross-sections, this paper divides the sedimentary strata of the Yangtze River's incised-valley in Nantong since the global Last Glacial Maximun(LGM). The stratigraphic sequence of the Yangtze River in Nantong since LGM reflects the postglacial transgression sedimentary cycle of river channel facies,floodplain facies, shallow marine facies and deltaic facies. The shallow marine facies mud-silt subclay in the bottom of the modern channel was corroded. The sediment in the bottom of modern channel is channel facies sands. |
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| Keywords: | Last Glacial Maximum Quaternary Yangtze River Nantong Jiangsu incised-valley strata |
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