I= CRUSTAL MODELING OF BANNU-KOHAT AREA WITH THE HELP OF INTEGRATED GEOPHYSICAL DATA
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Title of Thesis
CRUSTAL MODELING OF BANNU-KOHAT AREA WITH THE HELP OF INTEGRATED GEOPHYSICAL DATA

Author(s)
SHAMS-UD-DIN
Institute/University/Department Details
Department of Earth Sciences/ Quaid-i-Azam University, Islamabad
Session
2007
Subject
Earth Sciences
Number of Pages
59
Keywords (Extracted from title, table of contents and abstract of thesis)
crustal modeling, kohat plateau, bannu basin, tm image data, gravity data, isostatic model

Abstract
Gross crustal structures of Kohat plateau and Bannu basin area have been interpreted incorporating gravity, seismicity and landsat TM image data. The continued northward movement of the Indian plate against the Euorasian plate has produced litho-structural complexities in the area. The analysis shows that most of the area is dominantly a thin skinned type of fold and thrust belt. Basement faulting is confined to a small western part of the Kohat plateau and Mianwali reentrant. The major thrust faults are due to the presence of basal decollement between the sediments and the basement. Some blind/ hidden faults or micro shear zones exist. Gravity model BB' show two such faults named Adughar and Akhun Kot faults, while model CC' indicate Karak fault to extend further south east. There are indications from the Bouguer, Residual gravity and landsat TM image data that Kalabagh fault may be extending further north.

The 2-D gravity models suggest the thickening of the crust 38 km in the south to more than 45 km in the north and northwest. A comparison of isostatic moho with the gravimetric moho shows that areas lying southeast including the Salt range are over-compensated due to the thinning of the crust, whereas the Kohat- Potwar plateau areas, Bannu basin and Mianwali reentrant are under-compensated.

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2322.82 KB
S. No. Chapter Title of the Chapters Page Size (KB)
1 0 Contents
75.14 KB
2 1 Introduction
89.21 KB
  1.1 Introduction 1
  1.2 Purpose And Scope Of Work 1
  1.3 Previous Work 3
3 2 General Geology And Stratigrapgy
482.32 KB
  2.1 Regional Geology 5
  2.2 Regional Tectonics 8
  2.3 Stratigraphy 12
4 3 Geomorphologic Landsat TM Image Analysis And Neotectonic Studies
177.5 KB
  3.1 Introduction 16
  3.2 Critical Seismotectonic Features Of The Area (Fig. 3.2) 19
5 4 Description Of Gravity Maps
417.14 KB
  4.1 Gravity Data 23
  4.2 Bouguer Anomaly Map 23
  4.3 Regional Gravity Anomaly Map 25
  4.4 Upward-Continuation Filter 27
  4.5 Residual Gravity Anomaly Map 32
6 5 Interpretation Of 2-D Gravity Models And Some Isostatic
925.86 KB
  5.1 Introduction 34
  5.2 2-D Gravity Model Along Profile A-A€™ 35
  5.3 2-D Gravity Model Along Profile B-B€™ 35
  5.4 2-D Gravity Model Along Profile C-C€™ 36
  5.5 Isostatic Model 40
7 6 Discussion Of Results
39.51 KB
  6.1 Discussion 48
  6.2 Conclusions 49
8 7 References 51
207.13 KB
  7.1 Appendix 59