Young vertical movements in Qara-Chai basin (Markazi province)

Tabassi, Hadi; Najimi, Abolfazl

doi:10.22111/jneh.2016.4213

Young vertical movements in Qara-Chai basin (Markazi province)

Document Type : Research Article

Authors

Hadi Tabassi ¹
Abolfazl Najimi ²

¹ Assistant Professor in Geology Department, Faculty of Science, Islamic Azad University, Damavand Branch, Iran

² M.A., Watershed Research Section, Agriculture and Natural Resources Research Center, Markazi Province

10.22111/jneh.2016.4213

Abstract

Identification of active geological structures can make a lot of help to identify seismic zones. There are several ways to study and identify structures. Accordingly, the horizontal and vertical movements can be detected in the area. In order to identify the intensity of vertical movement on the part of the Markazi province, morphometry indices in Qara-chai watershed have been studied. Qara-Chai basin, following of Zagros and Central Iran Tectonics. In this study, topographic data, geological maps and geological information were scrutinized qualitative and quantitative. These data along with the streams data in the basin of choice, utilizes various specialized software’s are analyzed. There are many faults, some of which quaternary, and are young, it is a sign of high seismic potential range. Young Quaternary sediments, fractures and faults compliance and various geomorphometry indices surveys to indicate Indes and Koshk-e-Nosrat fault zone in west, south Saleh abad and Yal abad faults, Tafresh fault in north, North West and west of Tafresh city and Talkhab fault in North West of Arak from the perspective of uplift, are active and relatively high seismic potential. According to the relative tectonic activity indices of East and North Markazi province around Ashtian, Tafresh, Farahan and Saveh cities have high tectonic activity. These cities require special planning in the Markazi province. Undoubtedly, geomorphometry is not everything in mobility of Qara-Chai basin. Some fault zone has a strike-slip motion, which requires the use of methods other than geomorphometry indices.

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