| 南黄海灵山岛附近残留沉积及其沉积环境分析 |
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| 引用本文： | 高兴辰.南黄海灵山岛附近残留沉积及其沉积环境分析[J].海洋科学进展,1991(1). |
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| 作者姓名： | 高兴辰 |
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| 作者单位： | 国家海洋局北海分局监测中心 青岛 |
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| 摘 要： | 在灵山岛东南水深大于25m海域的表层,发现大片砂砾、砾砂类沉积。根据对此类沉积物特征、成熟度、粒度分布、概率累积曲线、粒度参数、贝壳种类和沉积物展布特征的分析,发现此类沉积与现今海洋动力环境和海相沉积特征不相符合,推知此类沉积可能为残留沉积,其沉积环境为陆相洪积扇沉积。
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| 关 键 词： | 南黄海 灵山岛 沉积物 沉积环境 |
Anaiysis of Relict Sediments in the Area of Southern Huanghai Sea Near Ling Shan Island and its Sedimentary Environment |
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| Gao Xingchen.Anaiysis of Relict Sediments in the Area of Southern Huanghai Sea Near Ling Shan Island and its Sedimentary Environment[J].Advances in Marine Science,1991(1). |
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| Authors: | Gao Xingchen |
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| Abstract: | In carrying out geological investigation in Ling Shah Island sea area in 1987, vast stretches of gravel-sand sand-gravel were found in the southeastern area of Ling Shah Island. These sediments were distributed over the area of deeper water and with a current speed 2NM/hr which can not move the sediments. Calcertes and peat were found in the sediments, which shows the characteristic of continental facies. Therefore, the sediments may be considered to be relicts which are inconsistent with today's condition of water power and sedimentary environment.The relict is a sediment with mixed clay, sand and gravel. The distribution of the sediments is fan-shaped. The grading of the sediments is no good. The rounding of the gravel is no good too. The margin of the gravel is edge angled and sub-edge angled. The major component of the gravel is volcanic debris rock coming from the rock of the Cretaceous period in Ling Shan Island.The gravel size is generally 0.2-1 centimeter, the probability curves of the relict is very even and composed of several straight lines.The relict, based on the above mentioned chracteristics, is considered to be the sediments near source. The sediments are carried almost wholly. Therelore, the environment of the relict should be a floodwater sedimentary fan. |
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| Keywords: | South Huanghai Sea Ling Shah Island Sediment Sedimentary environment |
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