TITLE:
Study of an Uplift of Sargodha High by Stratigraphical and Structural Interpretation of an East-West Seismic Profile in Central Indus Basin, Pakistan
AUTHORS:
Shazia Asim, Shahid Nadeem Qureshi, Nasir Khan
KEYWORDS:
Uplift, Unconformities, Structural Truncations, Depo-Center, Basement
JOURNAL NAME:
International Journal of Geosciences,
Vol.5 No.9,
August
27,
2014
ABSTRACT:
Research
Area comprises of Punjab Monocline, Sulaiman Foredeep and Eastern Part of
Sulaiman Fold Belt (from east to west) in Central Indus Basin, Pakistan.
Sargodha High is located in northeast of a Seismic Profile AB. Time and Depth
models show the subsurface crustal variations near Sargodha High, which
separates Upper Indus Basin from Central Indus Basin. The deposition of
Pre-Cambrian sediments is uniform in area and Paleozoic sediments (Permian
& Cambrian) are thinning in west. Mesozoic sediments (Cretaceous, Jurassic
& Triassic) and younger sediments (Paleocene) are not deposited in this
part suggesting an uplift of Sargodha High during Paleozoic time. An uneven
distribution of Paleozoic rocks shows some thickness in east but erosion,
thinning and almost truncation in west indicate their depocenter in east. This
also represents a time of uplift of Sargodha High that shifts depocenter
westward. Seismic data show a thick Mesozoic deposition in west, which onlaps
on the Permo-Triassic unconformity suggesting an area of non-deposition. The
gradual uplift of Sargodha high continues, which tilts the Mesozoic strata
forming wedge shape geometry.