兰坪盆地演化与成矿特征  

The Evolution and the Metallogenic Characteristic of Lanping Basin

作　　者：张峰[1] 唐菊兴[2] 陈洪德[1] 范小华[2] 陈生华[3] 陈文彬[4] 王成辉[2] 解惠[1] 

机构地区：[1]成都理工大学沉积地质研究院,成都610059 [2]中国地质科学院矿产资源研究所,北京100037 [3]中国科学院地球化学研究所(贵阳)环境地球化学国家重点实验室,贵阳550003 [4]中国地质大学,北京100083

出　　处：《地质与勘探》2010年第1期85-92,共8页Geology and Exploration

基　　金：国家重点基础发展规划"973"项目(编号:2002CB412607);中国地质调查局国土资源大调查项目(编号:1212010530605)

摘　　要：兰坪盆地的演化受控于盆地所处的构造背景,经历了中三叠世至早侏罗世的陆内裂谷盆地、中-晚侏罗世的拗陷盆地、白垩纪的前陆盆地、古新世-中新世的走滑盆地。盆内成矿与盆地性质密切相关,陆内裂谷盆地阶段是重要的成矿期,具热水沉积矿床特征;拗陷盆地阶段多形成铜多金属矿床;前陆盆地阶段为喜山期的成矿作了物质准备;走滑盆地阶段,由于推覆构造活动强烈,深部流体和浅部红层中的盆地流体的混合,提供了大量的矿物质,并就位于构造圈闭中,形成如金顶铅锌矿等大型矿床。The evolution of Lanping Basin is subjected to its tectonic background, which experienced intracontinental rift basin stage from Middle Tri- assic to Early Jurassic, depression basin stage from middle to late Jurassic, Foreland basin in Cretaceous and Strike-slip basin from Palacocene to Mio- cene. Mineralization was Closely related to the Basin nature, the intracontinental rift basin stage was the important mineralogenetic epoch, the mineral de- posit structure with the character of hydrothermal ore deposit. The copper polymetallic deposit was formed during the depression basin stage. It was pre- pared for Ore-forming materials to Himalayan phase during Foreland basin stage. Because of strongly nappe tectonic movement, the fluid that came frmn deep-seated and superficial Red Beds was mixed. So,it had provided a lot of ore-forming materials and formed large-scale ore deposit such as JinDing lead-zinc ore deposit located in the structural trap.

关 键 词：盆地演化 成矿特征 推覆构造金顶铅锌矿 

分 类 号：P511.1[天文地球—地质学]