山东省金矿类型及找矿方向探讨

在讨论金矿类型划分原则的基础上,考虑其对找矿的指导作用,认为胶东地区金矿不是绿岩带型金矿。并将山东省金矿类型划分为三种类型:第一种为与花岗岩侵入体有关的金矿;第二种为与火山岩—次火山岩有关的金矿;第三种为与变质核杂岩有关的金矿。每种类型金矿可进一步划分为若干亚类。中生代西太平洋域构造活动是山东省金矿形成的地球动力学背景。根据“在老区里找新区,在热区里找冷点”的指导思想,提出胶东东部地区和临沂地区是重要的找矿方向,并已在胶东东部乳山地区取得重大的突破。

DISCUSSION OF THE TYPES AND ORE EXPLORING DIRECTION OF SHANDONG GOLD DEPOSITS

Based on the discussion of the partitioning principle of gold ore types and on considering the directional affection for ore exploring,we think of gold deposits in Jiaodong area is not greenstone belt type.The types of gold deposits in Shandong Province can be divided into three types:the first relate to granitic erosion,the second relate to volcanic sublvocanic rocks,the third relate to metamorphic core complex each of gold ore types can more be divided into some subtypes.The tectonic activites of west pacific area in Mesozoic era is the earth dynamic background of the formtion of gold deposits in Shandong Province.According to the direction idea of that looking for new hot in old area and looking for cold spot in hot area,we propose that the eastern part of Jiaodon area and Linyi area are the improtant direction,and have obtained the magnitude of gold ore exploration in Lushan area of the eastern part of Jiaodong.