摘要
成矿综合模式由成矿模式和成矿后的变化改造因素构成。江西相山矿田是我国目前品位较高、矿量丰富的火山-侵入杂岩中的热液脉型铀矿田,成矿综合模式研究具有重要实践意义。根据相山矿田铀成矿地质特征、成矿条件分析,探讨了成矿作用机制和成矿后的隆升剥露,建立了相山铀矿田成矿综合模式。此模式表明,矿田东南部的铀矿遭受了强烈剥蚀,矿田西北部是找矿预测的靶区。
The Xiangshan field is a hydrothermal vein type uranium ore field. The deposits＇occur in the Xiangshan volcanic-intrusive complex and periphery areas. The deposits are asymmetrical distributed, mostly concentrated in the northern and western parts of the field, only one in the eastern part, and small ore occurrences in the central section and southern part. After the formation of the ore field, the deposits underwent a variety of epigenetic deformations, including the changes of spatial location. The earlier researches of ore mineralogy mainly focused on the formation of the deposits and the metallogenic model, but the late stage changes and integrated metallogenic model are rarely involved. In order to increase the predictive capability of deposits, we should study not only the ore foration processes, but also the main post-ore changes, modifications, preserving conditions and the integrated met allogenic model. Based on the geological characteristics of uranium mineralization and analysis of ore-forming conditions, this article researched the ore-forming mechanism and the post-ore uplifting and exhumation, and a integrat- ed metallogenic model has been established. The integrated metallogenic model includes the metallogenic model and the post-ore change factors. This study shows that the uranium deposits at the southeastern part of ore field have subjected to strong erosions, and the northwestern part of ore field is a plausible prospecting target area.
出处
《大地构造与成矿学》
EI
CAS
CSCD
北大核心
2011年第2期249-258,共10页
Geotectonica et Metallogenia
基金
中国核工业地质局"相山
大洲地区火山岩型铀成矿系列
勘查模式及找矿预测研究"生产性科研项目(项目编号: 05)资助
关键词
成矿综合模式
找矿预测
相山矿田
exploration model
metallogenic prognosis
Xiangshan uranium ore field
作者简介
张万良（1962-），男，博士，研究员，地质学专业，主要从事遥感及GIS在铀资源评价中的应用研究。Emial：ZWL270@163．com
