TITLE:
Analysis of Engineering Geology Indices in Three Units of Atamir Formation in Kope Dagh Zone
AUTHORS:
Bizhan Shirdel
KEYWORDS:
Atamir Formation, Kope Dagh Zone, Engineering Geology Indices, Joint Study, Software Analysis, Wedge Stability Analysis
JOURNAL NAME:
Open Journal of Geology,
Vol.5 No.12,
December
29,
2015
ABSTRACT: This is a field report on
a comprehensive study of the Atamir Formation from the engineering geology
perspective using the related indices. The Atamir Formation of the Cretaceous
Period, which has outcropped in the form of thick frequencies of grey-knotted
sandstone and black shales, is situated in the Kope Dagh zone. A survey of
discontinuities together with bedding was carried out to study slope stability.
The layers have a general east-west trend with a gentle slope towards the
south. Because of the tectonic and stratigraphic differences, and with the
purpose of facilitating surveys related to joint study of the outcrop, the
formation in the study region was divided into three units. The lower unit is
made of shale, the middle of sandstone, and the upper of marlstone. All three
units were studied from the perspective of geomechanical classification, rock
mass indices, geological strength, geomechanical indices, and wedge instability
analysis under dry and wet conditions, and the results were investigated in the
form of various images and figures. The Dips software was used to display the
rose diagram and stereographic projection of each unit, the Swedge software to
analyze instability of the wedges, and the Roctab software to analyze the
geomechanical parameters and present the outputs along with the description of
each unit.