Features of the Mineral Composition of the Quaternary Sediments of the Development Areas of the Erosion Processes on the Territory of the Tunkinsk’s Depression  

作　　者：S.I.Shtel’makh L.A.Pavlova T.G.Ryashchenko 

机构地区：[1]Institute of the Earth’s Crust,SB RAS,128 Lermontov St.,Irkutsk 664033,Russia [2]Institute of Geochemistry Named after A.P.Vinogradov,SB RAS,1A Favorskiy St.,Irkutsk 664033,Russia

出　　处：《Journal of Geological Resource and Engineering》2019年第4期113-122,共10页地质资源与工程（英文版）

摘　　要：The article considers the some features of the Quaternary sediments mineral composition of the development areas of the erosion processes on the territory of the Tunkinsk’s depression.Main objectives of our research are to determine the entering forms of Na,Mg,Al,Si,P,S,K,Ca,Ti,Cr,Mn,Fe,Zn,Cu,Zr,and Ba in the composition of the investigated sediments.The mineral composition was studied by the method of an electron probe X-ray spectral microanalysis(XRM)using wave spectrometers,and the method of X-ray diffraction analysis.The localization centers of Cr,Cu,Zn,Zr,and Ba were established in the mineral composition of the studied sediments.Maximum content of BaO(14.42 wt%)was detected in alkali K-feldspar in the clay sediments of modern alluvial complex(aQ4).Crystallochemical formulas of different minerals were obtained.

关 键 词：Electron probe X-ray spectral MICROANALYSIS mineral composition QUATERNARY SEDIMENTS FELDSPARS ore MINERALS 

分 类 号：P73[天文地球—海洋科学]