摘要
碱性岩型金矿是 80年代后期被发现和重视起来的一种新类型金矿。尽管在与碱性岩有关的金矿找矿方面我国已取得突破性进展 ,许多学者也相继开展了矿床的地质、地球化学、同位素年代学等方面的研究。但在矿床与构造环境、构造与成矿物理化学条件及成因模型等方面还有待于深入研究。通过研究发现其成因模型可概括为地球运动使壳幔物质交换形成多期活动的碱性岩带和幔壳混源流体 ,超壳深大断裂的长期活动使得幔壳混源流体上升流动 ,该流体在上升运移过程中 ,由于物理化学条件的变化形成金矿床。
Alkali rock type gold deposit is a new type of gold deposit which was found and valued in later of 1980s. Although the important advances were get along with finding and prospecting of this deposit in China, and many discussion were developed with respects to geology, geochemical and isotipic geochronology of the deposit. In some respects, such as relations between deposit and tectonic setting, mineralization physical chemical condition and structure, and genetic model and so on, many questions are waiting for answer. It's concluded from research that the genetic model of this kind of gold deposit can be described as follow: 1) Formation of alkali-rock belt and crust mantle complex fluid with the exchange of the crust mantle mass in the process of movement of the earth; 2) Uplifted migration of the fluid because of the secular action of deepseated fault structure and 3)Formation of gold deposit with the change of physical chemical condition of fluid in process of uplifted migration.
出处
《黄金地质》
2001年第1期55-62,共8页
Gold Geology
