Quantification of Quartz Reefs and Mafic Dykes of Bundelkhand, Craton, Central India: A Study Based on Spatial and Fractal Analysis
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The geological structures and their 2D geometrical relationships are often quantified using spatial and fractal techniques. In this study, quartz reefs and dykes from Bundelkhand craton of central India are investigated using spatial and fractal analysis to quantify the spatial relationship and establish the deformational events. The Bundelkhand craton comprises of massive granite batholiths, associated with extensive hydrothermal activities that led to the formation of numerous quartz reefs mostly in NE-SW and NW-SE directions. The area is also replete with NW-SE and NE-SW oriented mafic dykes, which are assumed to have formed during late stage crustal rejuvenation.
The spatial analysis suggests that each set of reefs and dykes are not the result of random processes (high Z score and low P-values). The fractal analyses also suggest, that there are at least two deformational events that led to the formation of quartz reefs and dykes independently in the Bundelkhand craton. The anisotropy of fractal dimension study validates the results obtained from the spatial statistical analysis. This study has provided important informations related to the number of deformational events and deformation localization in the study area.
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This study is a part of M. Sc. dissertation work of DD and a part of this study is funded by Center for Advanced Studies (CAS) and Department of Science and Technology - Science and Engineering Research Board (DST-SERB: ECR/2015/000079) early career research award to TKM. Tuhin Ghosh and Amit Ghosh are acknowledged for allowing the authors to learn the ArcGIS tool at the School of Oceanographic Studies, Jadavpur University. The authors are thankful to Adhir Basu for introducing the studied area. Reviews by anonymous reviewer significantly improved the manuscript. Editorial handling by B. Mahabaleswar is gratefully acknowledged.
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