怒江-澜沧江-金沙江区域矿床成矿系列

MINEROGENETIC SERIES IN THE AREA OF NU RIVER—LANCANG RIVER—JINSHA RIVER

根据程裕琪、陈毓川等(1979)关于矿床成矿系列的概念,笔者在编制怒江澜沧江金沙江区域地质矿产系列图及相应课题研究的基础上,对该区的矿床,按与岩浆活动、沉积作用和地下热液活动、变质作用有关的三类矿床成矿系列组合进行了初步划分。与岩浆活动有关的矿床,主要依据成矿时代、岩相(岩类)、成矿作用划分系列;同一系列按成矿期、岩石性质划分亚系列;同一亚系列按成因类型建立矿床类型式。与沉积-成岩作用及地下热液(喷溢)活动有关的矿床,主要依据成矿时代、成矿作用划分系列;按成矿期、容矿围岩性质、含矿建造划分亚系列;按矿床成因类型(矿物组合)建立矿床类型式。与变质作用有关的矿床,接受变质作用及超深变质的成矿作用划分系列;按原岩及成矿矿物来分亚系列;按成因类型来分矿床类型式。

With the conception of“Minerogenetic Series of Ore Deposits”advanced by Cheng Yuqi and Cheng Yuchuan etc.*, basing on the mapping of series maps of regional geology and mineral resources and the coherent investigations in Three Rivers area, the auther made a priliminary divission to the mineroge-netic series and associations with different genetics of magmatogenic, sedime-nto-hydrothermal and metamorphogenic. Deposits relating to magmatic activities were divided into minerogenetic series mainly according to mineralization period, petrological phase(lithologi-cal type)and metallozation. A certein series was divided into different sub-series according to metallogenic epoch and lithology. And a certain sub-series was furtherly divided into different deposit patterns with genetic type. Deposits relating with the sedimento-diagenetic and underground hydro- thermal(eruptive)activities were divided into different minerogenetic series mainly with metallogenic age and metalization. Sub-series were divided out from series according to mineralization epoch, properties of wall rocks and metallogenic formation. And deposit patterns were distinguished in their ge-netic(mineral association)types. Deposits relating with metamorphism were divided into metallogenic se-ries with metamorphosed and ultra-metamorphosed degrees. Sub-series were divided out from series according to protolithologic characters and metalloge-nic minerals. And deposit patterns were distinguished in their genetic types.