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

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

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

机译：长江（黄河）和黄河（黄河）河流沉积物碎屑矿物组成的比较及其物源意义

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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 River.

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《中国地质（英文）》 |2019年第002期|169-178|共10页
作者
Zhong-bo Wang; Ri-hui Li; Shou-ye Yang; Feng-long Bai; Xi Mei; Jian Zhang; Kai Lu;
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Qingdao Institute of Marine Geology China Geological Survey Minisitry of Natural Resources Qingdao 266071 China;

Laboratory for Marine Mineral Resources Qingdao National Laboratory for Marine Science and Technology Qingdao 266071 China;

Qingdao Institute of Marine Geology China Geological Survey Minisitry of Natural Resources Qingdao 266071 China;

Laboratory for Marine Mineral Resources Qingdao National Laboratory for Marine Science and Technology Qingdao 266071 China;

State Key Laboratory of Marine Geology Tongji University Shanghai 200092 China;

Qingdao Institute of Marine Geology China Geological Survey Minisitry of Natural Resources Qingdao 266071 China;

Laboratory for Marine Mineral Resources Qingdao National Laboratory for Marine Science and Technology Qingdao 266071 China;

Qingdao Institute of Marine Geology China Geological Survey Minisitry of Natural Resources Qingdao 266071 China;

Laboratory for Marine Mineral Resources Qingdao National Laboratory for Marine Science and Technology Qingdao 266071 China;

Qingdao Institute of Marine Geology China Geological Survey Minisitry of Natural Resources Qingdao 266071 China;

Laboratory for Marine Mineral Resources Qingdao National Laboratory for Marine Science and Technology Qingdao 266071 China;

Qingdao Institute of Marine Geology China Geological Survey Minisitry of Natural Resources Qingdao 266071 China;

Laboratory for Marine Mineral Resources Qingdao National Laboratory for Marine Science and Technology Qingdao 266071 China;

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

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