T Naderi; A ShafieiBafti; M Shahpasand-zadeh
Abstract
Structural data from the Kuh-Banan oblique-slip fault system show that this active fault controls the structural architecture of the Tikdar-Goorchoieh area, north of Kerman. The Kuh Banan fault system is consisted ...
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Structural data from the Kuh-Banan oblique-slip fault system show that this active fault controls the structural architecture of the Tikdar-Goorchoieh area, north of Kerman. The Kuh Banan fault system is consisted of three fault branches with mean trend of N70E in the north of the Tikdar - Goorchoieh village. These fault branches with a dip of 50-70 toward the northwest and slip rake of 50-80 N indicate the prevalent reverse with right-lateral strike-slip motion of the fault. The main strand of Kuh-Banan fault system with a northwest-southeast strike is reported between the Dehsu rock series and Shemshak Formation whereas the fault branches with a northeast-southwest trend are situated between the Hojedk Formation and Neogene alluviual deposits and Quatrnery sediments. In this area, the Dehsu rock series (Late Neo-Proterozoic-Lower Cambrian) is composed of dolostone and evaporitic rocks which thrusted over the sandstones, shales and limestones of the Hojdak Formation (Jurassic). According to the structural evolution of the Kuh-Banan fault system in the study area, the first fault branch (F3) with three fault slip motion in the northeast-southwest direction has developed between the Shemshak Formation and Dehsu rock series in north of Tikdar. The later fault branches of F1, F2, and F4 with the same trend have propagated from the main fault and developed between the Dehsu rock series with the Hodjek, Shemshak and Dahu (equivalent of Lalun) Formations.
M. Esterabi - Ashtiani; A. Yassaqi; H. R. Javadi; M. Shahpasandzadeh; M. R. Ghassemi
Abstract
Dorouneh Fault is located in the north of Central Iran Microplate with left-lateral strike-slip mechanism and plays an important role in the formation of Iran plateau's morphology. Dorouneh fault, with bend geometry and 900 km length, extends from HyrmandRiver in the Afghanistan border to Anarak area ...
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Dorouneh Fault is located in the north of Central Iran Microplate with left-lateral strike-slip mechanism and plays an important role in the formation of Iran plateau's morphology. Dorouneh fault, with bend geometry and 900 km length, extends from HyrmandRiver in the Afghanistan border to Anarak area in the Central Iran. Dorouneh Fault terminates in the Jandaq area as sub-parallel branches. Towards west, general trend of Dorouneh Fault System changes from northeast-southwest to north-south in the north of Talmessi Mine. Fault branches are observed as left-lateral strike-slip faults with normal dip-slip component in the Jandaq-Talmessi area that is introduced as a trailing extensional imbricate fan. But, considering slip sense inversion along Dorouneh Fault, the main mechanism for formation of western termination before slip sense inversion is a trailing compressional imbricate fan.