福建浦城中生代铀、多金属矿床形成条件及构造环境分析

ANALYSISES ON FORMING CONDITIONS AND TECTONIC SETTING OF MESOZOIC URANIUM,MULTIMETAL ORESIIN PUCHENG OF FUJIAN PROVINCE

本区铀、多金属矿床的形成与中生代晚期（Ｊ＿３－Ｋ＿１）火山活动关系十分密切。深部构造变异带和局部横向拉张部位是成矿的最佳环境。迭置在古老变质基底和花岗岩中的火山机构和隐爆角砾岩筒是矿床分布的有利空间。交织的线性构造是控制火山机构、矿体和矿脉的重要因素。深源物质是成矿的主要物源。

The formation of uranium and multimetal mineral deposits is closely related to the vol-canic activity of late Mesozoic(J_3-K_1)in this area. The mutation zone of the infrastructure and par-tial transverse pullapart position are the best condition of mineral-formation. The volcanic mechanismand explosive breccia pipe overlapped on the ancient metamorphic base and granite are the beneficialspace of ore distribution. Interweaved linear structure is the important factor of controlling volcanicmechanism,ore-body and ore-vein distribution. Deep materials are the main source of materials in min-eral-formation.