Evaluation of activity periods of Giv fault-segments using study of co-seismic travertines
Subject Areas :
معصومه Zamani
1
(
کارشناس ارشد تکنوتیک دانشگاه بیرجند
)
M.M KHatib
2
(
استاد گروه زمین شناسی دانشگاه بیرجند
)
GH.R Mirab-SHabestari
3
(
دانشیار گروه زمین شناسی دانشگاه بیرجند
)
محسن Aliabadi
4
(
کارشناس ارشد رسوب شناسی دانشگاه بیرجند
)
Keywords: Giv fault, Active faulting, Fault-segments, Travertinization stages, Activity periods,
Abstract :
The Giv strike-slip fault as one of active faults is located at 30 km in the south of Birjand. The appearance ofthis fault is discontinuous as it is composed of different pieces. Quaternary depositions rupture and occurrenceof destroyer earthquakes in 1324 and 1369 years are signs of fault activity. One of unique features on Giv faultis producting travertine deposits after each activity. With respect to each stage of Giv fault activity isassociated with one stage of travertinization in the past, therefore study travertinization stages show that thenumber of segments activity is different, hence survey the number of travertinization stages for each faultsegment is recognized a paleoseismology relatively. Field studies show at least three stages of travertinizationalong some of segments. Accordingly the Giv fault is divided into four main segments so that Garijgansegment-fault has recognized as the oldest and the most activity and Giv segment-fault has recognized as theyoungest and the lowest activity.
