Modeling of surface karst in Zagros folded (Case stady: Dalahoo mass)

Dalahoo mass located in Folded Zagros structural unit. The purpose of this investigation is mapping the surface karst development is in the Zagros folded. Nine elements of lithology, faults, elevation, rainfall, temperature, use land (vegetation), slope and aspect as independent variables in the process of karst formation and development and also geomorphology karst formation are involved in the study area. Mapping of surface karst development and the effects of different factors in permeability formations, Is necessary. The fuzzy logic model (gamma function) In order to achieve this goal, is used. Based on the results, Dalahoo mass in terms of zoning surface karst development were divided four four non Karst region, Karst with the development of low, medium developed and developed regions. Evaluation zoning map with sinkholes and karst Polje, showed high precision and high efficiency of this model to evaluate the development of karst surface.