摘要
研究发现 ,高山峡谷区内土壤中元素的表生活动以表生富集作用为主 ,元素表生富集作用的程度、富集层位和粒级等受矿化作用和自然风化作用双重影响。非矿化地段土壤中元素的表生富集程度较矿化带处土壤中元素表生富集程度更强 ;矿化带处B层土壤比A层土壤中元素的富集强度稍大 ,元素明显地富集在粗粒级组分中 ;近矿 (化 )带的非矿化地段 ,A、B两层土壤仍受到矿化组分的影响 ,A层土壤比B层土壤受到的影响更加明显 ,粗粒级组分比细粒级组分反映敏感 ,C层土壤中元素在细粒级组分中轻微富集。根据本次研究结果 ,调整了高山峡谷区土壤测量工作方法。经试点测量验证 ,找矿效果良好。
It has been found out through research that the primary supergene activity of elements in soil for mountain-canyon region was of supergene enrichment. The extent, horizon, and grain size of ore-forming elements and indicator elements supergene enrichment were controlled by both mineralization and weathering. The extent of ore-forming elements and indicator elements supergene enrichment in soil on non-mineral region was even higher than that on mineral belt. While on mineral belt, the extent of ore-forming elements and indicator elements supergene enrichment in horizon B soil was somewhat higher than that in horizon A soil. The elements obviously enriched in components of coarse grain. On non-mineral region near mineral belt, the content of ore-forming elements and indicator elements both horizon A and horizon B soil were still affected by mineralization components and it is more obvious for horizon A soil and coarse grain than that for horizon B soil and fine grain respectively. Whereas, In horizon C soil the ore-forming elements and indicator elements were slightly enriched in these with fine grain. The method of soil survey in mountain-canyon region has been improved based on our result. It was showed by trial survey that the survey effect of improved soil survey method was better than that traditional one.
出处
《地质与勘探》
CAS
CSCD
北大核心
2002年第5期58-62,共5页
Geology and Exploration
