Comparison of detrital mineral compositions between stream sediments of the Yangtze River (Changjiang) and the Yellow River (Huanghe) and their provenance implication

作     者：Zhong-bo Wang Ri-hui Li Shou-ye Yang Feng-long Bai Xi Mei Jian Zhang Kai Lu 

作者机构：Qingdao Institute of Marine GeologyChina Geological SurveyMinisitry of Natural ResourcesQingdao 266071China Laboratory for Marine Mineral ResourcesQingdao National Laboratory for Marine Science and TechnologyQingdao 266071China State Key Laboratory of Marine GeologyTongji UniversityShanghai 200092China 

出 版 物：《China Geology》 (中国地质（英文）)

年 卷 期：2019年第2卷第2期

页      面：169-178页

学科分类：0709[理学-地质学] 0819[工学-矿业工程] 0908[农学-水产] 07[理学] 0710[理学-生物学] 0707[理学-海洋科学] 0818[工学-地质资源与地质工程] 0708[理学-地球物理学] 0815[工学-水利工程] 0705[理学-地理学] 0816[工学-测绘科学与技术] 0813[工学-建筑学] 0814[工学-土木工程] 0812[工学-计算机科学与技术（可授工学、理学学位）] 

基　　金：jointly supported by the National Natural Science Foundation of China (41876059, 41730531) China Geological Survey (GZH201400201, DD20160137, DD20190208, DD20190377) China-ASEAN Maritime Cooperation Fund (121201005000151110) Open Found of Shandong Provincial Key Laboratory of Depositional Mineralization&Sedimentary Mineral (DMSM2017024) 

主　　题：Yangtze River Yellow River Sediment Detrital mineral Provenance implication 

摘      要：A comparative comparative study on the detrital mineral composition of stream sediments of the Yangtze River (Changjiang) and Yellow River (Huanghe) shows that, light minerals of the Yangtze River basin were mainly quartz, feldspar, and detritus, the compositional characteristics of light minerals differed among tributaries, the main stream had a generally higher maturity index than tributaries;heavy mineral content tended to decrease progressively from the upper stream to lower stream of the Yangtze River, the primary assemblage was magnetite-hornblende-augite-garnet-epidote, and diagnostic minerals of different river basins were capable of indicating the nature and distribution of the source rock. Detrital mineral assemblages in sediments of tributaries and the main stream of the Yellow River were basically similar, Primary heavy mineral assemblage was opaque mineral-garnet-epidote-carbonate mineral and alteration mineral. Variations in the contents of garnet, opaque mineral, and hornblende mainly reflected the degree of sedimentary differentiation in suspended sediment and the hydrodynamic intensity of a drainage system. The heavy mineral differentiation index F revealed sedimentary differentiation of diagnostic detrital mineral composition due to changes in regional hydrodynamic intensity and can serve as an indicator for studying the dynamic sedimentary environment of a single-provenance river and the degree of sedimentary differentiation of its detrital minerals. Changes in detrital mineral content of the Yellow River was not completely controlled by provenance but reflected gravity sorting of the detrital mineral due to variations in the ephemeral river hydrodynamic intensity and sedimentary environment, however the index changing of Yangtze River were mainly influenced by the complex sediment sources. Therefore caution must be exercised in using the detrital mineral composition of marginal sea to determine the contribution of the Yangtze River and Yellow Riv