西南三省一市1：50万含碳酸盐岩地层空间分布数据(2015年)

本数据集包含了西南三省一市1：50万含碳酸盐岩地层空间分布数据(2015年)，为矢量数据。数据源于四川、贵州和云南区域地质调查队。首先西南三省一市1:50万地质图进行坐标纠正，将地质图转换到统一坐标系下，经过在ARCGIS下进行编码、矢量化、编辑修改、建立拓扑关系，形成西南三省一市行政区的1:50万地质图；然后提出三省一市含碳酸盐岩地层数据进行地质图的二次加工形成西南三省一市的含碳酸盐岩地层空间分布数据。

This dataset contains 1:500,000-scale spatial distribution data of carbonate-bearing strata (2015) for three provinces and one municipality in Southwest China, which is vector data. The data is derived from the regional geological survey teams of Sichuan, Guizhou and Yunnan provinces. First, coordinate correction was performed on the 1:500,000-scale geological maps of the three provinces and one municipality in Southwest China, and the maps were converted to a unified coordinate system. Subsequently, encoding, vectorization, editing and modification, and topological relationship establishment were carried out in ArcGIS to generate the 1:500,000-scale geological maps of the administrative regions of the three provinces and one municipality. Then, secondary processing was conducted on the geological maps by extracting the carbonate-bearing strata data of the three provinces and one municipality, resulting in the final spatial distribution data of carbonate-bearing strata for the three provinces and one municipality in Southwest China.