区域地球化学异常（regional geochemical anomaly）是比地球化学省低一级次的地球化学异常，范围一般100～1000平方千米。在地壳演化过程中，由区域地质作用、区域成矿作用引起。例如反映成矿区带、矿集区的异常一般为区域地球化学异常。
本文叙述了盛源火山沉陷盆地铀矿床与区域地球化学异常和卫片解译特征之间的关系。
This paper gives a description of the uranium deposit in Shengyuan volcanic subsidence basin in relation to regional geochemical anomalies and the characteristics of satellite data.
区域地层微量元素地球化学研究表明，湘西所出露的地层均显著富集砷，是砷的高区域地球化学异常区。
The study on regional strata trace elements shows that the strata of Western Hunan are rich in arsenic, and Western Hunan is a high regional geochemical abnormal region for arsenic.
矿床区域地球化学异常发育，异常的分布受基性—超基性岩岩群和岩带制约，异常浓集中心与矿田的岩矿体一致。
Regional geochemistry anomaly in mining deposit was well-developed, and anomaly distribution is controlled by sill and swarm of basic and ultrabasic rock.
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