Based on outcrop observation, core description, single well-log and sequence analysis, connecting-well section, combined with lithological and mineralogical analysis and geochemical method, delta system and fluvial system were identified.
Anomalies of iron group elements (Cr, Ni, Co, Fe2O3, MgO, V, Mn) and chalcophile elements (Cu, Zn, Au, Ag, As, Sb, Hg) can show fault structure. In addition, different fault structure have different geochemicil characteristics, we can divide different time of fault structure from geochemical method.
By analyzing and comparing its REE date related to these typical gold deposits, some chondrite normalized REE distribution patterns for these gold deposits are established and the differences in REE geochemical action related to gold deposits and its relationship between gold mineralization and REE characteristics are discussed.
According to macroscopic and microscopic features related to geochemical action in the mineralizing process unveiled by geochemical study, this paper discusses material sources of Laowangchang gold deposit and the geochemistry in the metallogenic process, and expounds the geochemical behavior of Au and correlative elements together with the geochemical mechanism of formation in the lateritic gold deposit.
REE geochemical characteristics of ores, altered rocks and related unaltered rocks of three ore deposits have been studied. REE compositions of similar ore fluids have been computed and REE geochemical action have been discussed by REE patterns in the process of mineralization and alteration.
Sedimentary geochemistry of chert from the Middle-Upper Ordovician in Shihuigou area, North Qilian orogenic belt and its tectoni
The geochemistry of chert from the Zhongpu Group reveals that all cherts coexisting with island-arc volcanic rocks formed in a continental margin basin environment.
Sr, Nd and O isotope geochemistry of the mafic-ultramafic complexes in the southern margin of the Altay orogenic belt and discus
Elemental and Sm-Nd isotopic geochemistry on detrital sedimentary rocks in the Ganzi-Songpan block and Longmen Mountains
Systematic results of major and trace element geochemistry and Sm-Nd isotopic geochemistry on detrital sedimentary rocks of Precambrian to Triassic in the Ganzi-Songpan block and Longmen Mountains are presented.