山东平度大庄子金矿床地质特征及成因  

GEOLOGICAL CHARACTERISTICS AND GENESIS OF THE DAZHUANGZI GOLD DEPOSIT, PINGDU, SHANDONG

作　　者：邹为雷[1] 沈远超[2] 张连昌[2] 李厚民[2] 

机构地区：[1]中国地质科学院,北京100037 [2]中国科学院地质与地球物理研究所,北京100029

出　　处：《大地构造与成矿学》2002年第4期409-415,共7页Geotectonica et Metallogenia

基　　金：本文为中国科学院创新工程项目"金矿资源战略接替基地若干靶区预测(项目编号:KZCX1-Y-03)"的部分成果;并得到中国科学院创新工程项目;中国科学院黄金"九五"重大项目"山东省重要金成矿区的成矿模式及找矿预测(项目编号:KZ951-A1-404)"的联合资助.

摘　　要：大庄子金矿床是产出于胶莱盆地北缘的一个新类型金矿床,金矿受盆地边缘具有顺层产出特征的平缓断裂的严格控制。金矿化主要发育在断裂内的硅化大理岩质碎裂岩和角砾岩等张性构造岩石内,以其胶结物发育黄铁矿化、硅化为特点。控矿断裂具有与胶莱盆地“同生”的性质,其成生和金矿床的形成与郯庐断裂带在中生代燕山期间构造岩浆活动及胶莱盆地的发育演化密切相关,成矿流体及成矿物质具有明显的深源性。The Dazhuangzi gold deposit located in the northern margin of the Jiaolai pull apart basin is a new type gold deposit, which is controlled strictly by a fault. The ore controlling fault is along the marble strata of the Jingshan Group with a small dip. The gold mineralization occurs in the siliceous marble tectonic breccias and cataclastic rocks within the ore controlling fault structure. The cementation of the tectonic rocks is characterized by pyritization and silicification. The ore controlling fault and the deposit are closely connected to the tectonic magma activities of the TanLu Fault zone and the evolvement of the Jiaolai Basin in the Mesozoic, and the ore controlling fault occurs coetaneously with the upgrowth of the basin. The mineralizing fluids and materials are derived from the upper mantle and the crust depth.

关 键 词：大庄子金矿床 地质特征 成因 

分 类 号：P618.51[天文地球—矿床学]