| 河口地区沉积物的溯河搬运 |
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| 引用本文： | 李从先,孙和平,唐国良.河口地区沉积物的溯河搬运[J].同济大学学报(自然科学版),1987(2). |
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| 作者姓名： | 李从先 孙和平 唐国良 |
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| 作者单位： | 同济大学海洋地质系
(李从先，孙和平)，同济大学海洋地质系(唐国良) |
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| 摘 要： | 在长江、南流江、钱塘江河口地区的现场观测表明,涨潮流是使沉积物溯河搬运的主要动力,而有孔虫和铁皂石则分别代表溯河搬运的“轻”、重矿物。这种海相微体化石和海相自生矿物不仅见于河口地区,而且出现在全新世沉积层中。沉积物溯河搬运的研究进一步说明了长江三角洲地区海进河床充填层序的形成和解释了全新世太湖地区的某些海侵沉积问题。
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| 关 键 词： | 沉积物搬运 河口泥沙 |
Upstream Transportation of Sediment in Estuary |
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| Li Congxian,Sun Heping,Tang Cuoliang.Upstream Transportation of Sediment in Estuary[J].Journal of Tongji University(Natural Science),1987(2). |
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| Authors: | Li Congxian Sun Heping Tang Cuoliang |
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| Institution: | Li Congxian;Sun Heping;Tang Cuoliang Department of Marine Geology |
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| Abstract: | The field investigations of hydrology and sediment in estuaries of the Changjiang(Yangtze), Nanliujiang and Qiantangjiang Rivers show that flood tidal current is themain agent of upstream transporting sediment. The "light" and heavy mineralsupstream transported may be represented, respectively, by foraminifera and saponite,which have been found not only in distributaries, but also in Holocene sedimentarybeds of deltas. The study of upstream transportation of marine fossils and marineauthigenic minerals, such as saponite has further interpreted the formation of post-glacial transgressive river-channel fill sequence in the Changjiang (Yangtze) RiverDelta area and some problems of Holocene transgression in the Taihu area. |
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| Keywords: | Sediment transport Estuary sediment |
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