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Proceedings Paper

Demarcation of mineral rich zones in areas adjoining to a copper prospect in Rajasthan, India using ASTER, DEM (ALOS) and spaceborne gravity data
Author(s): Vivek K. Sengar; P. K. Champati Ray; Shovan L. Chattoraj; A. S. Venkatesh; R. Sajeev; Purnima Konwar; Shailaja Thapa
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Paper Abstract

The objective of this work is to identify the potential zones for detailed mineral exploration studies in areas adjoining to a copper prospect using Remotely Sensed data sets. In this study visualization of ASTER data has been enhanced to highlight the mineral-rich areas using various remote sensing techniques such as colour composites and band ratios. VNIR region of ASTER is significant to detect iron oxides while, clay minerals, carbonates and chlorites have characteristic absorption in the SWIR wavelength region. Therefore, an attempt has been made to target the mineral abundant regions through ASTER data processing. Height based information was extracted using high-resolution ALOSDEM to analyse the topographical controls in the region considering the fact that mineral deposits often found associated with geological structures and geomorphological units. Gravity data was used to generate gravity anomaly map which gives clues about subsurface density differences. In this context, base metal ores may show anomalous (high) gravity values in comparison to the non-mineralised areas. Outputs from all the data sets were analysed and correlated with the geological map and available literature. Final validation of results has been done through proper ground checks and laboratory analysis of rock samples collected from the litho-units present in the study area. Based on this study some new areas have been successfully demarcated which may be potential for base metal exploration.

Paper Details

Date Published: 5 October 2017
PDF: 7 pages
Proc. SPIE 10428, Earth Resources and Environmental Remote Sensing/GIS Applications VIII, 104281F (5 October 2017); doi: 10.1117/12.2277526
Show Author Affiliations
Vivek K. Sengar, Indian Institute of Remote Sensing (India)
P. K. Champati Ray, Indian Institute of Remote Sensing (India)
Shovan L. Chattoraj, Indian Institute of Remote Sensing (India)
A. S. Venkatesh, Indian Institute of Technology (Indian School of Mines) (India)
R. Sajeev, Geological Survey of India (GSI) (India)
Purnima Konwar, Geological Survey of India (GSI) (India)
Shailaja Thapa, Indian Institute of Remote Sensing (India)

Published in SPIE Proceedings Vol. 10428:
Earth Resources and Environmental Remote Sensing/GIS Applications VIII
Ulrich Michel; Karsten Schulz, Editor(s)

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