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Potential of Airborne Hyperspectral Data for Geo-Exploration over Parts of Different Geological/Metallogenic Provinces in India based on AVIRIS-NG Observations


Affiliations
1 Space Applications Centre, Indian Space Research Organisation, Ahmedabad 380 015, India
2 National Remote Sensing Centre, Indian Space Research Organisation, Hyderabad 500 042, India
3 Department of Geophysics, Indian Institute of Technology (ISM), Dhanbad 826 004, India
4 Space Science Institute, Boulder, Colorado 80301, United States
5 Department of Geological and Mining Engineering and Sciences, Michigan Technological University, Houghton, Michigan 49931, United States
6 Geological Survey of India Training Institute, Bandlaguda, Hyderabad 500 068, United States
 

In this article, we discuss the potential of airborne hyperspectral data in mapping host rocks of mineral deposits and surface signatures of mineralization using AVIRIS-NG data of a few important geological provinces in India. We present the initial results from the study sites covering parts of northwest India, as well as the Sittampundi Layered Complex (SLC) of Tamil Nadu and the Wajrakarur Kimberlite Field (WKF) of Andhra Pradesh from southern India. Modified spectral summary parameters, originally designed for MRO-CRISM data analysis, have been implemented on AVIRIS-NG mosaic of Jahazpur, Rajasthan for the automatic detection of phyllosilicates, carbonates and Fe–Mg-silicates. Spectral analysis over Ambaji and the surrounding areas indicates the presence of calcite across much of the study area with kaolinite occurring as well in the north and east of the study area. The deepest absorption features at around 2.20 and 2.32 μm and integrated band depth were used to identify and map the spatial distribution of phyllosilicates and carbonates. Suitable thresholds of band depths were applied to map prospective zones for marble exploration. The data over SLC showed potential of AVIRIS-NG hyperspectral data in detecting mafic cumulates and chromitites. We also have demonstrated the potential of AVIRIS-NG data in detecting kimberlite pipe exposures in parts of WKF.

Keywords

Data, Geological Provinces, Host Rocks, Hyperspectral, Mineral Deposits.
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  • Potential of Airborne Hyperspectral Data for Geo-Exploration over Parts of Different Geological/Metallogenic Provinces in India based on AVIRIS-NG Observations

Abstract Views: 351  |  PDF Views: 162

Authors

Satadru Bhattacharya
Space Applications Centre, Indian Space Research Organisation, Ahmedabad 380 015, India
Hrishikesh Kumar
Space Applications Centre, Indian Space Research Organisation, Ahmedabad 380 015, India
Arindam Guha
National Remote Sensing Centre, Indian Space Research Organisation, Hyderabad 500 042, India
Aditya K. Dagar
Space Applications Centre, Indian Space Research Organisation, Ahmedabad 380 015, India
Sumit Pathak
Space Applications Centre, Indian Space Research Organisation, Ahmedabad 380 015, India
Komal Rani (Pasricha)
National Remote Sensing Centre, Indian Space Research Organisation, Hyderabad 500 042, India
S. Mondal
Department of Geophysics, Indian Institute of Technology (ISM), Dhanbad 826 004, India
K. Vinod Kumar
National Remote Sensing Centre, Indian Space Research Organisation, Hyderabad 500 042, India
William Farrand
Space Science Institute, Boulder, Colorado 80301, United States
Snehamoy Chatterjee
Department of Geological and Mining Engineering and Sciences, Michigan Technological University, Houghton, Michigan 49931, United States
S. Ravi
Geological Survey of India Training Institute, Bandlaguda, Hyderabad 500 068, United States
A. K. Sharma
Space Applications Centre, Indian Space Research Organisation, Ahmedabad 380 015, India
A. S. Rajawat
Space Applications Centre, Indian Space Research Organisation, Ahmedabad 380 015, India

Abstract


In this article, we discuss the potential of airborne hyperspectral data in mapping host rocks of mineral deposits and surface signatures of mineralization using AVIRIS-NG data of a few important geological provinces in India. We present the initial results from the study sites covering parts of northwest India, as well as the Sittampundi Layered Complex (SLC) of Tamil Nadu and the Wajrakarur Kimberlite Field (WKF) of Andhra Pradesh from southern India. Modified spectral summary parameters, originally designed for MRO-CRISM data analysis, have been implemented on AVIRIS-NG mosaic of Jahazpur, Rajasthan for the automatic detection of phyllosilicates, carbonates and Fe–Mg-silicates. Spectral analysis over Ambaji and the surrounding areas indicates the presence of calcite across much of the study area with kaolinite occurring as well in the north and east of the study area. The deepest absorption features at around 2.20 and 2.32 μm and integrated band depth were used to identify and map the spatial distribution of phyllosilicates and carbonates. Suitable thresholds of band depths were applied to map prospective zones for marble exploration. The data over SLC showed potential of AVIRIS-NG hyperspectral data in detecting mafic cumulates and chromitites. We also have demonstrated the potential of AVIRIS-NG data in detecting kimberlite pipe exposures in parts of WKF.

Keywords


Data, Geological Provinces, Host Rocks, Hyperspectral, Mineral Deposits.

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DOI: https://doi.org/10.18520/cs%2Fv116%2Fi7%2F1143-1156