地质与资源2025，Vol.34Issue(3)：352-360,9.DOI:10.13686/j.cnki.dzyzy.2025.03.009
滇中姚安县富锌土壤地球化学特征及成因分析
Geochemistry and genesis of zinc-rich soil in Yao'an County,central Yunnan Province
摘要
Abstract
Based on the geochemical survey data of land quality of four counties(Dayao,Yao'an,Nanhua and Shuangbai)in central Yunnan Province,this paper studies the soil geochemical characteristics and Zn enrichment genesis in Yao'an County.The results show that the Zn-rich surface soil(with Zn content greater than or equal to 84×10-6)covers an area of 713.68 km2,accounting for 41.94％of the total area.Influenced by factors such as geological background,soil parent materials,and pH levels,the high-Zn zones are primarily distributed in the flatland areas along Taiping Town-Dongchuan Town-Guanglu Town,exhibiting a nearly north-south belt.Taking the Yao'an flatland as an example,the study on Zn enrichment genesis reveals that Zn primarily originates from the weathering of minerals in Zn-bearing rocks in alkali-rich porphyry areas.Through river transportation and subsequent clay adsorption processes,secondary Zn enrichment is completed in the Quaternary central flatland areas.关键词
富锌土壤/地球化学/成因分析/云南省Key words
Zn-rich soil/geochemistry/genesis/Yao'an County/Yunnan Province分类
天文与地球科学引用本文复制引用
黄加忠,白平雁,吴志超,张龙,王虎,王长如,阮剑..滇中姚安县富锌土壤地球化学特征及成因分析[J].地质与资源,2025,34(3):352-360,9.基金项目
中国地质调查局"滇中大姚、姚安、南华、双柏四县土地质量地球化学调查"(ZD20220211) （ZD20220211）
"西部地区战略性矿产靶区查证技术支撑"(DD20243018). （DD20243018）
