GEOLOGICAL AND GEOCHEMICAL CHARACTERISTICS AND RELATED MINERALIZATION OF CHERT FORMATIONS IN SOUTH TIBET
作者：HE Junguo,ZHOU Yongzhang,YANG Zhijun,NIE Fengjun,FU Wei,ZHANG Chengbo
摘要：There occur abundant cherts in the Mesozoic and Cenozoic strata in southern Tibet. Some of them possess characteristic hydrothermal structures such as layered, laminated, massive and breccia structures.Ratios of Al/(Al+Fe+Mn), Co/Ni, Fe/Ti and TiO2-Al2O3 demonstrate that their origin is related to hydrothermal sedimentation. The chert formations have close relationship with Sb, Au and poly-metallic mineralization, and the ore-forming fluid show strong correlation with fossil hydrothermal water.
發文機構：Center of Earth＇s Environment ＆ Resources Dept. of Earth Sciences Institute of Mineral Resources
關鍵詞：沉積結構熱液沉降礦化作用西藏地質條件chertsedimentary structurehydrothermal sedimentationmetallic mineralizationSouthern Tibet
分類號： P611[天文地球—礦床學][天文地球—地質學]
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