COMPARISON OF REE VARIATIONS WITH GRAIN SIZES IN SEDIMENTS BETWEEN THE YANGTZE RIVER AND THE YELLOW RIVER
GONG Chuan-dong1, DAI Hui-min2, YANG Zuo-sheng3
1. Shenyang Mining Development Co. Ltd., Shenyang 110179, China; 2. Shenyang Institute of Geology and Mineral Resources, Shenyang 110033, China; 3. College of Marine Geosciences, Ocean University of China, Qingdao 266003, Shandong Province, China
Abstract：According to the Stoke's Law, the grain sizes of sediments from the Yangtze River and the Yellow River are classified into four and six grades, separately. The REE contents in the sediments of various sizes are tested with ICP-MS. The results show differences between the two rivers. For the same grain size, the content of REE in the samples form Yangtze River is higher than that from Yellow River. The contents of REE form the Yangtze River reduce with the increasing of grain sizes of sediments. However, with the increasing of grain sizes, the REE contents in samples from the Yellow River present an unsymmetrical high-low-high distribution pattern. The North America Shale-normalized patterns show that the fractionation patterns are similar for different grain-sized sediments, and also for the two rivers. The differences of REE contents between the Yangtze River and the Yellow River are closely related to the weathering and mineral compositions in the sediments of the two river basins. The reducing trend of REE contents with grain size increasing for the Yangtze River is resulted from the dilution of quartz and feldspar contents which increase with the grain size. The REE distribution pattern of sediments from Yellow River is the result of the absorption of clay minerals in fine-grained sediment and the enrichment of heavy minerals in coarse-grained sediment.
宫传东, 戴慧敏, 杨作升. 长江与黄河沉积物稀土元素随粒度变化对比研究[J]. 地质与资源, 2013, 22(2): 148-154.
GONG Chuan-dong, DAI Hui-min, YANG Zuo-sheng. COMPARISON OF REE VARIATIONS WITH GRAIN SIZES IN SEDIMENTS BETWEEN THE YANGTZE RIVER AND THE YELLOW RIVER. GEOLOGY AND RESOURCES, 2013, 22(2): 148-154.
2013, Vol. 22 
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