摘要
香花岭—水口山多金属矿带积累的铅同位素数据很多,笔者将这些数据与构造、岩浆岩密切联系起来,结合锶、氧等同位素特征进行了较深入的研究与讨论,指出成矿物质是多来源的,但主要来自燕山期中酸性酸性花岗岩浆。它们均主要来源于下地壳,只不过在上寝过程中上地壳与幔源物质混入的多少不同而已。因此,据根元素在地球中的垂直分带原理,指出在以壳幔源和幔源物质占优势的成矿岩体较发育的矿带北段,应是金、银、富铜铅锌矿的远景勘查区。
There has been a large accumulation of lead isotope data from Xianghualing-Shuikoushan polymetallic ore zone. Relating these data to the tectonic setting and the occurrences of magmatic rocks, combining with the strontium and oxygen isotope features, a detailed investigation and discussion is given in this paper and it is concluded that the ore-forming material is of several sources, but the main source is the intermediate acid-acid granitic magma intruded during Yanshanian period, which were mainly derived from lower Crust, their diversification lying in that the amount of upper Crust derived and Mantle-derived materials involved is different. Therefore, according to the vertical zonation of elements in the Earth, it is pointed out that the northern part of the polymetallic zone, where ore-forming intrusions of Mantle or Mantle-Crust origin widely occur Must be promised target areas for exploration of gold, silver and rich copper, lead and zinc deposits.
出处
《湖南地质》
1992年第4期294-298,共5页
Hunan Geology
关键词
多金属矿带
铅同位素
地球化学
Xianghualing
Huangshaping
Shuikoushan
Stable isotope
Geochemical feature
Crust origin
Mantle origin
