广西珊瑚钨锡矿区成矿规律及成矿模式  

REGULARITIES AND MODEL OF METALLOGENESIS IN SHANHU TUNGSTEN-TIN ORE DISTRICT,GUANGXI

作　　者：李家驹 

机构地区：[1]桂林冶金地质学院地质矿产勘查系

出　　处：《桂林理工大学学报》1985年第4期307-314,共8页Journal of Guilin University of Technology

摘　　要：珊瑚地区地质结构的总格局是以葫芦岭构造岩浆穹隆为中心砥柱,外围强烈右旋并向南收敛、向北撤开的帚状旋扭构造。根据笔架山断层两侧地质构造环境差异,可将珊瑚区划分为东、西两个矿田。预测长营岭以南,大木肚、镰刀湾一带地下存在着隐伏岩体。该区控矿构造为长营岭格状断裂系统;而容矿构造则为格状断裂系统中的次级剪切裂隙。文章最后初步提出该区成矿模式的设想,即长营岭隐伏花岗岩岩浆期后热液多阶段分异,配合构造的发育,多次充填成矿。The general pattern of geological structures in Shanhu district is abroom-shaped rotational structure, with the Hululing structure-magmaticarch as the central axis, and strongly right-rotating in the periphery. Itis converged to the south and spreaded out to the north. Accordingto the differences of structural environments on the two sides of theBijiashan fault, this district can be divided into two orefields. It is pre-dicted that there exists a hidden granite intrusion to the south of Chang-yingling and underneath the region from Damudu to LiandLowan. The ore-controlling structures in this district are the Changyingling grid faultsystem, and the ore-holding structures are the secondary shear crackswithin this system. The metallogenic model of this district is proposed inthis paper, i. e. post-magmatic hydrothermal solution was segregated inmany stages from the Changyinglins hidden grante, and coordinating withthe crack structures developed, the ores were deposited by polystage filling,

关 键 词：石英脉型矿床 葫芦 笔架山 成矿规律 旋扭构造 断裂系统 隐伏岩体 断层 地质构造 矿田 帚状构造 旋扭构造体系 航磁异常 珊瑚钨锡矿 矿床类型 环形构造 广西 

分 类 号：P61[天文地球—矿床学]