TITLE:
Neotectonics of Boroujerd Area, SW Iran by Index of Active Tectonics
AUTHORS:
Maryam Omidali, Mehran Arian, Ali Sorbi
KEYWORDS:
Neotectonics, Geomorohic Index, Boroujerd, Zagros, Iran
JOURNAL NAME:
Open Journal of Geology,
Vol.5 No.5,
May
15,
2015
ABSTRACT: Boroujerd area has located
in the border zone of Zagros mountain and Sanandaj-Sirjan belt in the southwest
Iran. Six geomorphic indices were calculated in the study area. Through
averaging these indices we obtain index of active tectonics (Iat). The values
of the index were divided into classes to define the degree of active
tectonics. Therefore, relative tectonic activity was calculated and their
values were classified and analyzed in two groups. Regions were identified as low
and moderate levels. In analyzing data and combining them with tectonic setting
the results were often associated and justified with regional geology. Our
results show that the highest value has located along faulted area, which shows
3 classes of relative tectonic activity (moderate level). Also, other values
have located along folded area (low level). Therefore, middle part of study
area (sub-basin No. 4) is showing the more active uplifting related to
surroundings region (sub-basin No. 1, 2 and 3). In other words, sub-basin No. 4
has got the more active uplifting by quaternary movements of several faults
such as Doroud fault.