Home » ArticlesArticlesTrishear onlap fault fold and their application from Ahmadabad areaWriters : Ghafarinik,Baharak;Kolivand,Hasan;Ghasemi,Mohammad Reza Refference : The 19th Symposium on Geoscience;Tehran Publishing Year : 1379 Abstract : The calcareous_ shaly unit of lower cretaceous in Ahmad_ Abad region in northeastrn of Iran is influenced by various brittle and ductile deformations ( such as faults and fault _ related folds). Kinematics of fault related folds at some places can form with trishear model of folding. This model involves a deformation zone with a pair of hangingwall anticline and footwall syncline, sometimes associated with extensional fractures or veins and shear plances using this model. We may predict the boundries of zone, style of deformation, fracture orientation, thickening and thinning of layers, displacment of structures and volume changes of trishear zone, if various Parameteres such as apical angle of triangle zone, propagation to slip ratio (p/s) and tip line position of faults are known. Because of the lack of necessary information, we introduce caractristics of these zones in three stations at central portion of Ahmad _ Abad sheet and in tagmar_kavir road of studied area. Subject List : Fault |
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