低场理论及有利找矿标志

找铀矿要到放射性高异场中去找,这似乎已成为一种习惯,因而也影响找矿效果．实践表明,约有80％的矿是位于低异常场及与之相邻的离异常场附近,特别是面积为几十平方公里的小高异常场中通过对国内外上千个矿田、矿床和矿点的统计研究,提出在自然界中存在着呈“萝卜型”分布的异常（矿床或矿体）为核心的低场理论、探讨了低异场产生的机制,总结了低场中的10种有利找矿标志．对两个地区今后的勘查进行了有益的讨论

THE THEORY OF GEOPHYSICAL AND GEOCHEMICAL LOWS AND FAVOURABLE MARK OF PROSPECTING

Prospecting for uranium would be in radioactive high anomaly field, it seems that deeprooted custom forces, so prospecting for uranium mineral take effects. The practice illustrated the uranium minium orethey is located geochemical lows and contiguous nealby the geochemical highs, in particular, small geochemical highs of several tenths km2. However, through statistrical research for uranium ore fields, deposits and occurrences at home and abroad, and it's suggests that the geochemical lows theory of the anomaly （orebody and deposit） of "radish type" distribution in natural, it is geochemical lows would be surround by related highs of geochemical field that there are annular and a string of beads, frequently, it is a position of favotirable prospecting iranium mineral（or space of mineralization）, the middle position of related shallow and small mineral ordbody（deposit）, frequently, there are related large hidden mineral orebody （deposit） in the scale. This paper discussed the mechanism of geochemical low field thory's produced, In the geochemical lows the favourable prospecting mark of the ten summarized in the paper, and profitable discussed for two areas of exploration and development from now on.