Spatial Analysis of Zagros Karst Landforms Depending on Altitude and Tectonic Position

Abstract

Karst is a result of numerous processes that occur in limestone areas and different climatic, geological and hydrological conditions and its effects in various shapes, such as pits and caves in the ground and underground. We in this article study due to the vast area of the region and the lithology dispersion of lime in various altitudes. Based on documents such as geological maps 1: 100000, the digital model of elevation with a power of 12.5 m and topographic maps of 1: 50,000. The first of the karstic forms Located in Zagros in the Arc GIS software and required data was extracted using Mapper Global, Google Earth software, and their dispersion analyzed in terms of height, seams and cracks (faults) and Excel. The results of the dispersion of karst shapes and complications relative to height indicate. They the density of the forms at different altitude levels has increased with increasing elevation. Their frequency in the upper classes is several times higher than the lower classes, and the dispersion of the karstic forms concerning the distance from the fault shows that all types of karst except Hum, without exception, have the highest density at a distance of fewer than 20 kilometers from of the failure. The dispersion of these forms, including Doline and caves at that space, indicates that Karst's evolution increases according to the gaps and the dissolution process, especially in the deep karst, increases.

Keywords

• polje
• dolin
• zagros
• karst
• ham