| 珠江口表层沉积物的重矿物分析 |
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| 引用本文： | 苏广庆,王天行.珠江口表层沉积物的重矿物分析[J].矿物学报,1992,12(1):45-52. |
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| 作者姓名： | 苏广庆 王天行 |
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| 作者单位： | 中国科学院南海海洋研究所，中国科学院南海海洋研究所 广州 510301，广州 510301 |
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| 摘 要： | 本文研究了珠江口表层沉积物中约200个样品的矿物,着重分析重矿物的组合、含量变化,形态特征等,把珠江口重矿物的平面分布划为五个重矿物区。指出珠江口为现代陆源物质充填的河口湾,沉积环境控制了重矿物的特征、分布及分区,重矿物沉积过程的规律性,可供寻找地质时期和现代的浅海(古滨海)砂矿借鉴。
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| 关 键 词： | 重矿物 表层 沉积物 沉积环境 广东 |
ANALYSIS OF HEAVY MINERALS IN THE SURFACE SEDIMENT AT THE PEARL RIVER MOUTH, GUANGDONG |
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| Su Guangqing Wang Tianxing.ANALYSIS OF HEAVY MINERALS IN THE SURFACE SEDIMENT AT THE PEARL RIVER MOUTH, GUANGDONG[J].Acta Mineralogica Sinica,1992,12(1):45-52. |
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| Authors: | Su Guangqing Wang Tianxing |
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| Abstract: | This study deals with about 200 mineral samples from the surface sediment at the Pearl River mouth, with an emphasis on the composition, content variation and morphological characteristics of the heavy minerals. The Pearl River mouth is divided into 5 heavy mineral-distributed zones according to the planar distribution of heavy minerals. A comprehensive analysis of all characteristics, as well as of the processes of transport and sedimentation of the heavy minerals suggests that heavy minerals at the Pearl River mouth are originated mainly from the West and North Rivers. and subordinately from the East River, while the near-source accumulation along the coasts and islands is also of local significance. It is pointed out that the Pearl River mouth is a modern terrigenous matter-filling estuary; its sedimentary environment controls the mineral composition, morphological characteristics, content variation and zonation of heavy minerals; and the regularities governing the formation of heavy mineral deposits can be used to search for shallow-sea(old offshore) placers of geological periods or of modern time. |
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| Keywords: | heavy mineral surface sediment sedimentary environment terrigenous clastic Guangdong |
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