The Dayao Liuju Copper Deposit Creek - Shimenkan Geological Characteristics And Geochemical Anomalies Mode

Sponsored by the national experimental pilotexploration project for crisis mine named" Mineral resources survey of the Xiaohe-Shimenkan ore-forming block, Daoyao Liuju copper deposit in Yunnan" ,this thesis comes out. On the basis of summarizing the geological datum of Cu metallogenic region, it studies on the geological characteristics and geochemical anomaly pattern in the Xiaohe-Shimenkan ore-forming block.Based on mechanic character identification of fault textural planes, the Orefield tectonic systems are divided into three types. By means of analysis on relationships between structure and mineralization, it has built the metallogenic model of the deposit. The results show that the formation and evolution of structures are controlled by the main stress in 4 periods, i.e., NE-SW-trending Tension, EW-trending compression, NE-SW-trending compression and SN-trending compression. The second and third stages have played a major role in the mineralization and ore enrichment, and the faults formed in the fourth stage pushed ore-bodies to the grey bed.It studied on stratigraphic geochemistry with emphasis. Major and trace elements geochemical data indicate that the association of mineralization elements is Cu, Hg, Ag, As, Sb. According to analysis of the geochemical features in different drill holes, the changing characteristic of elements horizontal zonality sequence from purple bed to grey bed (Sbâ†'Hgâ†'Vâ†'Cu, As, Sbâ†'Ag, Co, Niâ†'Pbâ†'Zn) has been elaborated.By different stratum contrasted, on the basis of the rule to the distribution features of geochemical anomaly, it has established the geochemical anomaly 3D-model of the Xiaohe-Shimenkan ore-forming block. It offers important accordance for deep-seated metallogenic prognosis. Detailed study of the deposit has provided work proposal to the next step.