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黄河、滦河三角洲的物质组成及其来源
张义丰1, 李凤新1
中国科学院地理研究所
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THE CHARACTERISTICS OF MATERIAL COMPONENT AND THE MATERIAL RESOURCES IN HUANGHE (YELLOW) RIVER, LUANHE RIVER
Abstract:
The mineral contents are not alike, because the rivers flow through different mother rocks. Huanghe (yellow) River is rich in less stable mineral (Epidote) and stable mineral (Pyrope). Luanhe is rich in stable minerals (ilmenite magentite) and most stable minerals (Zircon). The minerals of Huanghe delta come mainly from the Xiaolangdi region and Tais-hang mountain areas. The minerals of Luanhe delta come not only from the erosion areas of granite and metamorphic rock in middle course, but also from lower mounts and hills in north delta.The mineral size of Huanghe, Luanhe deltas ranges from 0.05 mm to 0.005 mm.
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