Abstract
Fractal measures (Fdim, Dlac, and Dsuc) and Transverse-topographic-asymmetryfactor (Tfactor) were used to assess the neotectonic deformation with aid of
MATLAB algorithms and (GIS) techniques. This appraisal underlines the role of
the tectonic geomorphometric processes for the basin asymmetry. Astore-DeosaiSadpara watershed (ADSW) region in Gilgit-Baltistan was selected for this
purpose as it lies between MKT and MMT which is experiencing surface
topographic deformation (STD) caused by anti-clock-wise progression and
subduction of Indian plate beneath Eurasia. To investigate neotectonism in the
Astore-Deosai-region (ADSW), we identified geomorphic domains that show
evidence of ground tilting during Quaternary time. Tfactor and Fractal measures;
fractal dimension, Lacunarity and Sucolarity (Fdim, Dlac, and Dsuc) were used to
infer directions of topographic deformation (TD) and ground tilting. ASTERGDEM based transverse basin profiles were converted to two-dimensional vectors
that denote channel position with respect to basin mid-lines and divides.
Quaternary activity is suggested for two thrust faults in ADSW-GB. The results
obtained illustrates that (Fdim), Transverse-topographic-asymmetry-factor (Tfactor)
and Drainage density (Ddensity) show anomalies in the ADSW region that clearly
represent a robust control of nearby MMT, MKT and KkF and highlights their
significance to describe regions vulnerable to neotectonics and related deadly
events threatening precious human lives and infrastructure damages. Results
obtained reveal that geomorphometric investigation of Tfactor, Fdim, Dlac, and Dsuc
proved efficient inspection tools in ADSW region.
Amer Masood , Syed Amer Mahmood , Jahanzeb Qureshi , Muhammad Khubaib Abuzar. (2020) Investigation of Tilt Block Neotectonics in Gilgit-BaltistanPakistan: Implications from T-factor and fractal Analyses, Journal of the Research Society of Pakistan, Volume 57, Issue 1.
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