摘要
燕山地区金、银、铜、铅、锌、钼矿床主要形成于中生代。中生代构造是主要控矿因素之一。区内中生代构造对矿体、矿床的控制作用有6种基本型式。环状构造是最主要的控矿构造之一。大量中生代矿化皆分布于环状构造内部或周边。控制矿体分布的人字型构造、多字型构造、帚状构造皆系区内二、三级主干断裂带的次级派生、伴生断裂构造。韧性剪切带对矿化具有直接控矿与间接控矿两种型式。一些矿床矿体的分布同时受两种或两种以上构造型式控制。
Most of the gold,silver,copper,lead-zinc and molybdenum deposits in Yanshan area formed in Mcsozoic era.Mesozoicstructures are the main controlling factor.There are six basic tectonic mineralization types in Mesozoic era in Yanshan area.Circular structure is one of the most important controlling structures.Mineralization is limited in the inner or the marginof the circular structures.λ-type structures,ξ-type structures and brush structures controlling ore bodies are derivative struc-tures and associated structures of the two-order or three-order major fault zones in the region.Ductile shear zone ormylonite zone controlled mineralization directly or indirectly.In some ore deposits ore bodies are controlled by two orthree tectonic types.
出处
《地质与勘探》
CAS
CSCD
北大核心
1993年第11期10-15,38,共7页
Geology and Exploration
