摘要
华北地块北缘是我国重要的金、多金属成矿带。根据区域地质建造特点、构造性质将研究区划分为５种成矿地质背景。不同的区域成矿地质背景有不同的成矿特点：变质基底区，主要形成沉积变质改造型ＣｕＦｅＡｕＰｂＺｎ成矿系列；盖层区，主要在中晚元古代沉降区形成ＰｂＺｎ（Ａｇ）沉积成矿系列、ＰｂＺｎ（ＡｇＡｕ）沉积改造成矿系列；地槽区，主要形成中酸性岩浆热液多金属成矿系列，火山－次火山热液金、多金属成矿系列，基性－超基性岩浆ＣｕＮｉ成矿系列；中生代火山断陷盆地，主要形成中酸性火山－次火山金、多金属成矿系列；构造岩浆活动带则广泛形成中酸性岩浆热液金、多金属成矿系列。
The Northern Borderland of Huabei Massif is an important gold and polymetallic metallogenic belt in China. Based on the characteristics on the regional geological formation and tectonics, the studied area is divided into 5 geological settings: metamorphosed basement, cover, geosyncline, Mesozoic volcanic rift basin and tectonomagmatic belt. In the metamorphosed basement area, there are mainly Cu Fe Au Pb Zn diagenetic metamorphic reformed type metallogenic series; in the cover area, there are mainly Pb Zn (Ag) depositing metallogenic series and Pb Zn (Ag,Au) depositing-reformed metallogenic series in Mid Late Proterozoic subsidence area; in syncline, there are mainly mid acid magmatic hydrothermal polymetallic, volcanic subvolcanic hydrothermal gold polymetallic and basic ultrabasic magmatic Cu Ni metallogenic series; in Mesozoic volcanic subvolcanic basin area, there are mainly mid acid volcanic subvolcanic gold polymetallic metallogenic series; in tectonomagmatic activity belt, there widely distribute mid acide magmatic hydrothermal gold polymetallic metallogenic series.
出处
《辽宁地质》
1998年第4期241-250,共10页
关键词
成矿地质背景
成矿系列
金矿床
多金属矿床
Huabei Massif, The Northern Borderland, Metallogenic geological setting, Metallogenic series
