alexa Composite Geophysical Study Comprising Gravity, Magnetic, and Resistivity Surveys to Delineate Basement Salt Deposits Near Jabbar Nala East of Kherwa Gorge, Pakistan | Abstract
ISSN: 2381-8719

Journal of Geology & Geophysics
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Research Article

Composite Geophysical Study Comprising Gravity, Magnetic, and Resistivity Surveys to Delineate Basement Salt Deposits Near Jabbar Nala East of Kherwa Gorge, Pakistan

Mahmood Sultan and Khawar Ashfaq Ahmed*
Department of Earth Science, Quaid-i-Azam University, Islamabad, Pakistan
Corresponding Author : Khawar Ashfaq Ahmed
Department of Earth Science
Quaid-i-Azam University, Islamabad, Pakistan
Tel: +92-300-634-2456
E-mail: [email protected]
Received August 18, 2014; Accepted October 10, 2014; Published October 13, 2014
Citation: Sultan M, Ahmed KA (2014) Composite Geophysical Study Comprising Gravity, Magnetic, and Resistivity Surveys to Delineate Basement Salt Deposits Near Jabbar Nala East of Kherwa Gorge, Pakistan. J Geol Geosci 3:182. doi:10.4172/2329-6755.1000182
Copyright: © 2014 Sultan M, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
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Abstract

A composite geophysical survey has been carried out comprising gravity, magnetic, and resistivity surveys for delineation of salt deposits, thickness of overburden and basement depth over an area of 631 acres near Jabbar Nala east of Khewra Gorge, Sodi, Pakistan. The survey is carried out on the girded pattern of 100 x 100 meters; however, some variability in coverage tends to exist due to the existence of high hills topography. Present research revealed that salt deposits exist within the depth of 75~100 meters at specific locations in the extreme northeast and northwest. Most of the anomalous zones fall in this area is analogous when these three surveys are explored and comprehensive analysis performed. Existing excavated area of salt mine also exists in the northeast where the strong Bouguer gravity, magnetic, and resistivity anomalies have been superimposed, however, anomalous zone extents further in the northeast. Gravity, magnetic, modeling has been carried out along the anomalous zones comprising cross-sections of AA’, BB’ and CC’. However, for further confirmation of the results, a test bore of 90~120 meters depth needs to be drilled at the recommended anomalous zones (Zone B and Zone C).

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