首页> 中文期刊> 《甘肃冶金》 >吉林和龙地区多金属矿床时空分布规律、矿床类型及找矿思路研究

吉林和龙地区多金属矿床时空分布规律、矿床类型及找矿思路研究

         

摘要

通过对和龙地区区域地质背景的研究分析,以5个典型多金属矿床的调查研究为突破口,对矿床(点)的空间、时间分布规律进行了总结,认为该区矿床(点)分布具有种类众多范围广、成群成带分布、成矿时代广、持续时间长的特征,矿床(点)分布与地层、构造和岩浆岩等地质因素关系密切,形成时代可划分为新太古代、晋宁期、华力西晚期和燕山早期4个阶段。以成矿作用、成矿时代、赋矿围岩、矿体空间形态为基础,划分出新太古代绿岩带型热液金矿床、新太古代绿岩带沉积变质铁矿床、晋宁期热液型银矿床、华力西晚期热液型钼矿床、燕山早期构造破碎蚀变和石英脉型热液金矿床、燕山早期斑岩型钼矿床6种类型。最后提出了该区找矿目标、主攻矿种,以及勘查技术部署等关键技术。%Through the study of regional geological background, with five typical polymetallic deposit as the breakthrough point, the space and time distribution regularity of ore deposits ( points) are summarized, that the distribution of ore depos⁃its ( points) has a wide variety, wide bands zonal distribution and metallogenic epoch characteristics of long duration, dis⁃tribution of ore deposits ( or points) and closely related to geological factors such as strata, structure and magmatic rocks, the formation can be divided into four stages of new archaean era, jinning period, late variscan and early yanshan. Based on the metallogeny and metallogenic epoch, ore rock and ore body space form, the deposits can be divided into six types of new archean greenstone belt typed hydrothermal gold deposit, the new archean greenstone belt typed sedimentary metamor⁃phic iron deposit, Jinning hydrothermal period silver deposit, the late variscan hydrothermal typed molybdenum deposit, the early Yanshan tectonic fractured altered and quartz vein typed hydrothermal gold deposit, the early yanshan porphyry molyb⁃denum deposit. Finally the prospecting targets in the area, the main minerals, key technology and exploration technology deployment, etc. were put forward.

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