Structural Characteristics and Formation Mechanism of the Earth Fissures as a Geohazard in Birjand, Iran

Earth fissure structures are a common type of geohazard associated with geotechnical surface ruptures that can occur almost anywhere on the ground due to variety different mechanisms, and in most cases, these hazardous cracks have resulted severe damage infrastructure. Investigation structural characteristics fissures an active tectonic area (such as Birjand eastern Iran) improve our understanding connections between geology. The first reported earth NW distributed along North fault. Field observations analysis detailed topography cross-sections using real-time kinematic (RTK) technique been used infer development. Morphometric faults shows long axis is perpendicular strike average volume strain study was calculated be 14.68 percent based geometry studies, maximum corresponding location fault’s youngest splay. This splay formed fault-propagation folds exposed structures. this system subjected activity evolution result expansion tensile stress.