Abstarct: Telmadarreh area in the east of Kiyasar, is a part of south margin the eastern Alborz. Stratigraphic studies illustrate outcrops of Paleozoic, Mesozoic and Cenozoic rock units in this area with prevailing northeast-southwest structural trend. All of the studied folds show, baxsed on interlimb angle of fold (Fleuty 1964), most of the fold have taken place in open field and with less in gentle and tight. baxsed on the dip of axial plane and plunge of hinge line, the studied folds are classified into three domains: 1- Upright- Horizontal, 2- Steeply inclined- Gently plunging, 3- Recumbent, and just a few located in other ranks. The faults that their strikes are northeast-southwest such as Badeleh, Orost, Langar, Agareh and Kavat, have left lateral reverse mechanism. This geometrical arrangement and kinematics of faults is compatible with regional left lateral transpression. Evidences of neotectonics activities are observable with some geological records such as fault escarpment, dislocated streams, travertine forming spring, change riversś erosional system and also deformation of young formation and quaternary sediments. Also peruse travertine Badabsort source, shows a Limestonic Dolomite reservoir (Khoshyeylagh formation) for this source, which Badeleh fault actions has affected on Shemshak formation by its sediments.