Characterizing Engineering Sites in a Sedimentary-based terrain using Ground Magnetic Attributes methods: A Case Study from the Karak Area, Southern Kohat Plateau, Pakistan.

Abstract The Karak District of the Southern Kohat Plateau was chosen as the location of the magnetic data acquisition, that accomplished four grids totaling 7,600 square meters. Approximately 5 and 10 meters distanced the interstations. The initial compilation of magnetic field data had been adjusted for the purpose to identify anomalies. Gaps, magnetic spikes, and noise from the sensors were observed. Minor fractures or nonmagnetic source rocks have been suggested to be the origin of the low magnetic flexural anomalies found in the Western, Central, and Eastern regions of the map. On the other hand, the northern and southern areas had extensive overburden or deep source bodies, which may have originated from faults or diamagnetic minerals. These regions are regarded as weak points for building. Hydrogeological research is required because of the low magnetic intensity in the region. Large constructions could have been firmly supported by the magnetic sedimentary rocks and shallow overburden, forming a round closure. In the Western, Central, and Southern areas, widely spaced contour lines are indicative of substantial overburden or deep source bodies, which are thought to be non-magnetic minerals or faults. Development in the area should be avoided because of the possible risks that come from building towering structures.