The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences
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Articles | Volume XL-8
Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci., XL-8, 469–476, 2014
https://doi.org/10.5194/isprsarchives-XL-8-469-2014
Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci., XL-8, 469–476, 2014
https://doi.org/10.5194/isprsarchives-XL-8-469-2014

  28 Nov 2014

28 Nov 2014

GIS based 3D visualization of subsurface and surface lineaments / faults and their geological significance, northern tamil nadu, India

J. Saravanavel and S. M. Ramasamy J. Saravanavel and S. M. Ramasamy
  • Centre for Remote Sensing, Bharathidasan University, Tiruchirappalli, Tamil Nadu, India

Keywords: GIS based 3D visualization, Subsurface lineaments, Surface lineaments, Northern Tamil Nadu, India

Abstract. The study area falls in the southern part of the Indian Peninsular comprising hard crystalline rocks of Archaeozoic and Proterozoic Era. In the present study, the GIS based 3D visualizations of gravity, magnetic, resistivity and topographic datasets were made and therefrom the basement lineaments, shallow subsurface lineaments and surface lineaments/faults were interpreted. These lineaments were classified as category-1 i.e. exclusively surface lineaments, category-2 i.e. surface lineaments having connectivity with shallow subsurface lineaments and category-3 i.e. surface lineaments having connectivity with shallow subsurface lineaments and basement lineaments. These three classified lineaments were analyzed in conjunction with known mineral occurrences and historical seismicity of the study area in GIS environment. The study revealed that the category-3 NNE-SSW to NE-SW lineaments have greater control over the mineral occurrences and the N-S, NNE-SSW and NE-SW, faults/lineaments control the seismicities in the study area.