浙江中生代陆缘火山岩金矿成矿系统

METALLOGENIC SYSTEM OF GOLD DEPOSITS IN MESOZOIC CONTINENTAL MARGIN VOLCANIC ROCKS, ZHEJIANG

浙江地处中国东南沿海大陆边缘火山岩成矿带，已发现众多金（银）矿床（点），它们在空间上往往不是孤立地出现，而是在数十至数百平方公里内围绕岩浆热中心相对集中，并与有色金属在矿田范围内伴生。研究证明，金（银）及有色金属矿床是同一火山—侵入旋回过程中形成的有成因联系的矿床。笔者将这种在同一火山—侵入旋回间，围绕同一个岩浆热中心，在不同深度和水平距离内形成的一系列具有成因联系的金（银）和有色金属矿床的总和称为火山岩金矿成矿系统。本文在此概念基础上，详细论述了浙江中生代陆线火山岩金矿成矿系统的类型。时空结构和物质来源。

Zhejiang province is located in the minerogenetic belt of the Mesozoic continental margin vol canic rocks in the southeast China, where a lot of gold ore deposits have been discovered. Those gold deposits are relatively concentrated around the magmatic heat centre within a range from tens to hundreds of spuare kilometres, and are associated with the nonferrous metal within the limit of ore field. Arcording to studys in recent years, it has been proved that the gold (silver) and nonferrous metal deposits were formed in the same cycle of volcanic activity and related in genesis. So the author put forward the concept of metallogenic system of volcanogenic gold ore deposits, composed of a series of gold (silver) and nonferrous metal deposits which were formed in the same cycle of volcanic activity and distributed at different depth and horizontal distance around the same magmatic heat centre. This paper mainly discussed the types, time and space structure, and material origin of gold (silver) metallogenic system of Mesozoic volcanic rocks in Zhejiang province.