| 长江口外表层沉积物黏土矿物分布特征（英文） |
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| 引用本文： | 蓝先洪,张志珣,李日辉,王中波,陈晓辉,田振兴.长江口外表层沉积物黏土矿物分布特征（英文）[J].海洋通报(英文版),2012(2):56-69. |
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| 作者姓名： | 蓝先洪 张志珣 李日辉 王中波 陈晓辉 田振兴 |
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| 作者单位： | [1]国土资源部海洋油气资源与环境地质重点实验室,青岛266071 [2]青岛海洋地质研究所,青岛266071 |
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| 摘 要： | 依据对长江口外表层沉积物187个站位沉积物样品的黏土矿物含量分析,研究了长江口外表层沉积物黏土矿物的组合特征和分布规律。长江口外表层沉积物伊利石为优势矿物,平均含量为60.3%;次之为蒙脱石,平均为14.9%;高龄石平均含量13.5%,绿泥石平均含量为12.3%。黏土矿物的组合类型以伊利石-蒙脱石-高岭石-绿泥石型为主,伊利石-高岭石-绿泥石-蒙脱石型次之;长江口外表层沉积物黏土矿物主要为陆源成因,物质主要来源于黄河和长江的供给。Q型聚类分析显示,现代黄河物质及老黄河物质主要沉积于研究区东北部北纬29°30′以北地区,长江物质主要在研究区西部及中部区域沉积。
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| 关 键 词： | 黏土矿物 分布特征 长江口外 |
Distribution of clay minerals in surface sediments off Yangtze River estuary |
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| LAN Xian-hong,ZHANG Zhi-xun,LI Ri-hui,WANG Zhong-bo,CHEN Xiao-hui,TIAN Zhen-xing.Distribution of clay minerals in surface sediments off Yangtze River estuary[J].Marina Science Bulletin,2012(2):56-69. |
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| Authors: | LAN Xian-hong ZHANG Zhi-xun LI Ri-hui WANG Zhong-bo CHEN Xiao-hui TIAN Zhen-xing |
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| Institution: | 1. The key Laboratory of Marine Hydrocarbon Resource and Geology, Qingdao 266071, Shandong province, China; 2. Qingdao Institute of Marine Geology, Qingdao 266071, Shandong province, China) |
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| Abstract: | Based on the clay minerals, content analysis from 187 stations in the surface sediments, this paper dealt with the assemblages and the distributions of clay minerals in the surface sediments off the Yangtze River estuary. The research results showed that the illite dominates the surface sediments off the Yangtze River estuary with the smectite or kaolinite the second rank and chlorite the third rank; the illite-smectite-kaolinite-chlorite-assemblage is the main type of the clay minerals assemblage in the area, with the illite-kaolinite-chlorite-smectite-type as the second rank; the source of clay mineral is mainly from the Yellow River and the Yangtze River. The Q-type cluster analysis show that sediments from both recent and ancient Yellow River were deposited mainly in the northeast part of the study area to the north of 29°30′. Substance from the Yangtze River was deposited mainly in the western and middle parts off the Yangtze River estuary. |
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| Keywords: | clay mineral distribution characteristic off Yangtze River estuary |
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