Rahman SharifiMahmoud Nikkhah Shamirzadi Soil Conservation and Watershed Management Research Department, Tehran Agricultural and Natural Resources Research and Education Center, AREEO, Tehran, IranDepartment of Civil Engineer, Islamic Azad University, Semnan Branch, Semnan, Iran r.sharifi@Areeo.ac.ir International Journal of Fundamental Physical Sciences (IJFPS) 8 4 91-95 December, 2018 2231-8186 https://doi.org/10.14331/ijfps.2018.330119 This paper examines the qualitative effects of marl formations on the distribution of Quaternary deposits in Tehran province. Marls, particularly sensitive to erosion, are classified as evaporative or non-evaporative based on mineral content. Using geological maps, satellite imagery, and field surveys, the study identifies the prevalence of erosion forms (e.g., badland, gully, rill, and tunnel erosion) associated with different marl units. The analysis highlights marl’s major role in sediment production and the geomorphological development of the region, particularly in areas with minimal vegetation cover and extreme lithological properties. Marl formations and units, Quaternary units, Erosion types, Tehran Province https://creativecommons.org/licenses/by-nc/4.0/