阿尔泰中高山区域化探金异常成因探讨

以异常查证和矿床成因研究成果为基础，在异常集／构造带的层次上分析了阿尔泰中高山区金异常的成因，认为异常主要由砂金引起，砂金来源于古风化壳－即古近纪以前的红土型金矿，终极来源可能为以含金石英脉为代表的分散矿化。据此分析，北阿尔泰带的岩金勘查前景应审慎评估，例外的是诺尔特亚带。在此基础上，提出了砂金成因异常的地球化学判别标志，并对冰缘区若干地球化学勘查问题进行了讨论。

INQUIRIES FOR GOLD ANOMALIES GENESIS OF REGIONAL GEOCHEMICAL EXPLORATION IN MIDDLE-HIGH MOUNTAINS OF ALTAY

Based on anomalies exploration and deposit genesis researches, the article analyses the gold anomaly genesis in middle-high mountains of Altay on the anomalies concentrated in tectonic zone and considers. The author thinks that anomalies are caused mainly by gold placers that come from paleo-eroded crust, red-soil-type gold deposit the Paleogone ago, which might derive from dispersal mineralization of gold quartz veins. According to this analysis, the rock-gold exploration prospect for north Altay zone is carefully estimated except Nurt sub-zone, on which geochemical judging marks for the anomaly genesis by gold placer are suggested and a series of problems for geochemical exploration in ice margin area are discussed.