<正>Objective Three-dimensional (3D) subsurface geological models have been gaining considerable attention wordwide. 3D geological surveys and modelling in the Xiangshan uraniferous volcanic basin, Le’an county, Jiangxi Province is a pilot project of the China Geological Survey. The Xiangshan volcanic basin is the third largest volcanic-type uranium ore field worldwide. This basin is composed of Lower Cretaceous rhyodacite and porphyritic lava with