摘要
阿尔泰山南缘可可塔勒铅锌成矿带主要由麦兹、克兰、冲乎尔 3个泥盆纪含矿火山沉积盆地组成 ,产于陆缘裂谷带内侧 (近陆一侧 ) ,下泥盆统康布铁堡组上亚组流纹—英安质火山沉积建造是主含矿层位。按特征矿物组合的不同可分为块状硫化物型、磁铁硫化物型和萤石方铅矿型 3个矿化类型。含矿盆地中规模较大的矿床产于断陷深度大、火山活动强烈的次级火山洼地中。铅锌矿化空间上具有南北分带、东西分区的分布规律性 ,时间上具有较明显的演化性 ,由早到晚 (层位自下而上 )典型的演化序列为 :Fe→ Fe、Pb、Zn→ Pb、Zn、Ag→Pb、Ag( F,Ba)。不同级别的构造控制了不同级别的矿化 。
The Koktale Pb- Zn belt in South Altay consists of three Devonian ore- bearing volcano- sediment- ed basins named Maizi,Kiran and Chungkur,developed in the inner zone of the continental marginal rift. The ore beds mainly occur at the upeer sub- formation of Kanbutebi Formation of L ower Devonian.Three types of mineralization with differentmineral associations are of massive sulphide,magnetite- sulfide and fluo- rite- galena.Large and middle deposits generally formed in the secondary depressions with greater depth and intensive volcanic activity.The studied belt covers north- and- south subbelts and east- and- west divisions, characterized by a typical metallogenic evolution of Fe→ Fe,Pb,Zn→ Pb,Zn,Ag→ Pb,Ag( F,Ba) .Different ranks of mineralization are controlled by different ranks of structures,which form different structure- control- ling mineralization series.
出处
《新疆地质》
CAS
CSCD
1998年第3期236-244,共9页
Xinjiang Geology
基金
国家"305"项目!85 - 90 1- 0 1- 0 2专题成果
关键词
阿尔泰山南缘
可可塔勒
铅锌矿带
成矿规律
southern margin of Altay mountains koktale Pb- Zn belt metallogenic regularity
