Research on remote sensing image characteristics of carbonate rock based on RS and GIS: An example of southern Guizhou region

The purpose of this work is to obtain and analyze the spatial distribution characteristics of carbonate rocks in the southern Guizhou area and their expressions on remote sensing images. The data used include the Landsat8 satellite image， a geological map of scale 1∶50 million， carbonate rock distribution map and tectonic map of the study area. The limestone， dolomite and limestone interbedded with dolomite are primary objects to observe. The results show that whether or not it is influenced by the structure， the limestone strata are generally characterized by single color， large topographic relief and non-river system and construction land distribution on the image. The image features of the dolomite strata are rich colors， well-developed rivers and more construction land. And the image features of limestone interbedded with dolomite strata are between the limestone and dolomite strata. Structural styles， such as joints， faults， and anticlines， have great influence on the characteristics of the remote sensing image of carbonate rocks， resulting in quite different feature seen on remote sensing images.