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- W2769366978 abstract "The Kohat Foreland Basin is a product of continental collision between Indian and Eurasian plates defining the southern edge of Himalayan Orogenic System in the north-western Pakistan. This research is an attempt to understand the structural events of the western Kohat Foreland Basin in 2D-3D work flow, evaluation of multiple decollements and the structural correlation between surface and sub-surface rocks. Two-dimensional available data was integrated into an internally consistent 3-D workflow in MOVE SUIT 2015.1, which was then easy to incorporate and conclude beyond known points to better constrain structural interpretation and validation. The outcropping and non-outcropping stratigraphic sequence of the Kohat Foreland Basin is divisible into two structural-stratigraphic domains based on the mechanical understanding of the region. These domains are separated by a regional decollement of folding and faulting located at the base of Patala Formation (Paleocene). The rocks of the upper domain, which are comparatively more ductile and are underlain by a thick sequence of shale and evaporites of the Eocene are deformed into, tight, overturned, doubly plunging and internally faulted anticlines intervened by broad synclines. These east-west oriented surface folds are formed due to detachment thrusting within the Paleocene-Eocene Rocks. The lower domain has a series of north-dipping or south-verging, fault propagation folds incorporating the rocks of Cambrian to Palaeocene which contains the major hydrocarbon play of the area. A structural disharmony is present in the Kohat Foreland Basin i.e. the structural geometry of surface rocks does not emulate the sub-surface rocks. The faults in the study area are listric and north or south dipping with a calculated displacement, ranging from 250-2000 metre. The total percentage shortening calculated along the specific lines is 37%. The north-western part of the study area is relatively more deformed and expose the older rocks. The general rock trend of the western Kohat Foreland Basin deviates from the east-west to the west-north-west as we move from east to the west. Stress analysis of a 3D surface of the Manzalai Ghar Anticline at the level of Lockhart Limestone (-1500 m) is done by using Mohr Stress diagram in MOVE 2015.1 software. The results illustrate positive normal stress values, which suggests the north-south compression related shearing and fracturing in the western Kohat Foreland Basin" @default.
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- W2769366978 date "2017-12-16" @default.
- W2769366978 modified "2023-09-23" @default.
- W2769366978 title "GEOLOGICAL CONSTRAINTS ON WESTERN KOHAT FORELAND BASIN, KHYBER PAKHTUNKHWA, PAKISTAN: IMPLICATION FROM 2D AND 3D STRUCTURAL MODELING" @default.
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