Central Asia—A Global Model for the Formation of Epigenetic Deposits in a Platform Sedimentary Cover

作     者：Igor Pechenkin Vladislav Petrov Igor Pechenkin;Vladislav Petrov

作者机构：FSBI All-Russian Scientific-Research Institute of Mineral ResourcesMoscowRussia Institute of Geology of Ore Deposits Petrography Mineralogy and Geochemistry RASMoscowRussia 

出 版 物：《Journal of Earth Science》 (地球科学学刊（英文版）)

年 卷 期：2022年第33卷第2期

页      面：278-288页

核心收录：

学科分类：081803[工学-地质工程] 08[工学] 0818[工学-地质资源与地质工程] 

基　　金：the IGCP Project on Uranium Deposits of Sandstone Type(IGCP 675) 

主　　题：Central Asia Kyzyl Kum Bukantau ore-forming systems epigenetic ore deposit geology 

摘      要：Metallogenic specialization of sedimentary cover in Central Asia is determined by its tectonic setting that governs the hydrodynamic regime(exfiltrational or infiltrational)and as a consequence,the hydrogeochemical zonality(type of water and its gaseous and microcomponent composition).Hydrodynamic conditions(distribution of recharge and discharge areas)determine the direction of stratal water flow and location of mineralization resulted from the change in geochemical,thermodynamic,lithological,structural and other *** exfiltrational regime suggests a dependence of the epigenetic mineralization upon the distribution and degree of preservation of hydrocarbon ***,hydrocarbon matter serves as a reducing barrier and ore-concentrating factor during the formation of polymineral concentrations related to stratal oxidation *** supergene epigenetic ore-forming processes are induced by the interaction between the Earth’s sedimentary cover and *** rocks themselves commonly serve as a source of ore *** ore deposition zones on geochemical barriers and ore material source are often located significantly apart from each *** trend of these processes is determined by the position of ore-bearing depressions in large tectonic blocks.