桂西-滇东南地区数字地形特征与次生富集锰矿空间分布关系研究

Research on Relationship between Digital Terrain Characteristics and Spatial Distribution of Secondary Enrichment Manganese Ore in Western Guangxi and South-eastern Yunan,SW China

文章利用ArcG IS软件、数字地形分析和G IS空间分析技术,研究了桂西-滇东南地区DEM模型、数字地形特征及锰矿床矿点空间分布,揭示地形地貌特征与锰矿分布的空间关系。文章基于DEM对桂西-滇东南地区的地形因子进行提取和分析,并与锰矿床矿点的空间分布进行对比分析,推断出该地区有利于锰矿床产出分布的数字地形特征。分析结果表明,该地区锰矿分布于坡度小、起伏度小、切割微弱地带,这些地带有利于锰矿物的次生氧化富集。

By ArcGIS software, digital terrain analysis and GIS spatial analysis technology, the DEM model, the digital terrain characteristics and the spatial distributions of the manganese ore deposits or occurrences are investigated, which reveals the spatial relationship of topographic features and manganese ore distribution. Based on DEM data of the western Guangxi and south - eastern Yunan in SW China, the terrain factors of the region are analyzed and extracted. By comparing and analyzing the terrain with the manganese ore distribution, the digital terrain characteristics favorable to host the manganese ore deposits are inferred. The investigation results indicate that the manganese ore deposits mainly occur in the regions where the slope is gentle, amplitude is small and surface incision is weak, where are favorable to the secondary enrichment of manganese minerals.