The Mineral Composition and Sources of the Fine-Grained Sediments from the 49.6?E Hydrothermal Field at the SWIR

作     者：ZHANG Wenqiang SUN Xiaoxia FAN Dejiang LIU Ming JIA Qi YANG Zuosheng ZHANG Wenqiang;SUN Xiaoxia;FAN Dejiang;LIU Ming;JIA Qi;YANG Zuosheng

作者机构：Key Laboratory of Submarine Geosciences and TechnologyMOEOcean University of ChinaQingdao 266100China Laboratory for Marine GeologyQingdao National Laboratory for Marine Science and TechnologyQingdao 266061China 

出 版 物：《Journal of Ocean University of China》 (中国海洋大学学报（英文版）)

年 卷 期：2020年第19卷第1期

页      面：60-68页

核心收录：

学科分类：070903[理学-古生物学与地层学(含：古人类学)] 081803[工学-地质工程] 0709[理学-地质学] 07[理学] 08[工学] 0818[工学-地质资源与地质工程] 

基　　金：supported by the China Ocean Mineral Resources Research and Development Association (No. DY 125-11-R-04) 

主　　题：Southwest Indian Ridge surface sediment mineral source hydrothermal 

摘      要：We used the X-ray diffraction method to determine systematically the mineral phases in bulk sediment samples and acid undissolved residuals of the fine-grained fraction of the surface sediments from the 49.6°E hydrothermal field at the Southwest Indian Ridge(SWIR)and discussed the mineral sources of the surface *** results showed that the surface sediments in this region were composed of calcareous ooze,and calcite was the dominant *** sediments also contained quartz,feldspar,clay minerals,pyroxene,sphalerite,barite,serpentine,and *** quartz,feldspar,and clay minerals were exogenous minerals that mainly originated from the Namib and Kalahari deserts in southern *** pyroxene,serpentine,magnetite,sphalerite,calcite,and barite were endogenous minerals from weathering of seafloor basement rocks and seafloor hydrothermal *** sulfide particles in the sediments were mainly deposited from upwelling plumes.