Neotectonics Study Along The Frontal Thrust System Of The Fold-Thrust Belt Of Northwest Himalayas, Pakistan

dc.contributor.advisorKhan, Shuhab D.
dc.contributor.committeeMemberSuppe, John
dc.contributor.committeeMemberHauptvogel, Daniel
dc.contributor.committeeMemberHu, Xie
dc.creatorQureshi, Kamil Ahmed
dc.creator.orcid0000-0002-1690-9089
dc.date.accessioned2024-01-26T19:49:36Z
dc.date.createdDecember 2023
dc.date.issued2023-12
dc.date.updated2024-01-26T19:49:36Z
dc.description.abstractDevelopments in geodetic techniques such as Interferometric Synthetic Aperture Radar (InSAR) and the launch of new satellite missions with high spatial and temporal coverage have significantly improved our understanding of the geologic and anthropogenic processes, which include but are not limited to mapping active continental/local scale faults. This work utilizes the InSAR-SBAS (Small Baseline Subset) remote sensing technique, high-resolution digital elevation model (DEM), field data, 2D seismic and well data to constrain the structural geometry, geomorphic evolution, and active tectonic deformation of the Himalayan Frontal Thrust System. The first study focuses on the westernmost segment of the Himalayan frontal thrust in the Manzai Ranges. The geologic landscape shows active tectonic features, i.e., stream deflection, wind, and water gaps associated with geologic structures. I used the Sentinel-2B optical imagery and compiled a geologic map using band ratios. Further, the InSAR-SBAS technique was applied with geomorphic indices calculation using Sentinel-1A and TanDEM-X to analyze surface deformation. This work suggests that the frontal structures in the western Himalayas are still going through an active phase of deformation and geomorphic evolution. The second study is on the Manzai Ranges that evolved in less than 1 MA as suggested by the paleomagnetic data; however, the amount of tectonic shortening and the geomorphic evolution of the recently developed frontal structures in the Manzai Ranges are still unknown in reference to the regional Himalayan tectonics. The geometry is constrained by integrating quantitative seismic structural interpretation with field structural data and 12m resolution DEM as fault-bend and detachment folds. This work suggests a single regional detachment in the Miocene age rocks in the Manzai Ranges with no salt tectonics. In the third study, I evaluated the present-day surface deformation rate of the western Salt Range and the Trans Indus Ranges and compared their seismic versus aseismic creep related to the presence or absence of ductile detachment. I used the InSAR-SBAS technique to analyze surface deformation from 2017 – 2023. The time-series analysis shows aseismic creep of the Salt Range, Kalabagh Fault, Khisor Ranges, and the Pezu Fault due to the ductile Precambrian Salt Range Formation.
dc.description.departmentEarth and Atmospheric Sciences, Department of
dc.format.digitalOriginborn digital
dc.format.mimetypeapplication/pdf
dc.identifier.citationPortions of this document appear in: Qureshi, K. A., and Khan, S. D. 2020. Active tectonics of the frontal Himalayas: An example from the Manzai Ranges in the recess setting, western Pakistan. Remote Sensing, 12(20), p.33-62; and in: Qureshi, K. A., Suppe, J., Khan, S. D., and Khan, Z. 2023. Structural geometry and geomorphic evolution of the Trans Indus Manzai Ranges, Western Himalayas, Pakistan. Journal of Structural Geology, 104998.
dc.identifier.urihttps://hdl.handle.net/10657/16197
dc.language.isoeng
dc.rightsThe author of this work is the copyright owner. UH Libraries and the Texas Digital Library have their permission to store and provide access to this work. UH Libraries has secured permission to reproduce any and all previously published materials contained in the work. Further transmission, reproduction, or presentation of this work is prohibited except with permission of the author(s).
dc.subjectStructural Geology
dc.subjectStrain Partitioning
dc.subjectWestern Himalayas
dc.subjectSurface Deformation
dc.subjectSeismic Structural Geology
dc.titleNeotectonics Study Along The Frontal Thrust System Of The Fold-Thrust Belt Of Northwest Himalayas, Pakistan
dc.type.dcmitext
dc.type.genreThesis
dcterms.accessRightsThe full text of this item is not available at this time because the student has placed this item under an embargo for a period of time. The Libraries are not authorized to provide a copy of this work during the embargo period.
local.embargo.lift2025-12-01
local.embargo.terms2025-12-01
thesis.degree.collegeCollege of Natural Sciences and Mathematics
thesis.degree.departmentEarth and Atmospheric Sciences, Department of
thesis.degree.disciplineGeology
thesis.degree.grantorUniversity of Houston
thesis.degree.levelDoctoral
thesis.degree.nameDoctor of Philosophy

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