Integration of remote sensing and geophysics in geological mapping of southern block of Chitradurga Schist Belt areas in upstream Cauvery basin, Western Dharwar Craton, Karnataka
We present mapping and comparision of the geology of the southern block of the Chitradurga schist belt (CSB). We have used ASTER images and geophysical data to compare the geology. Consequently, present study confirms how remote sensing integrated with geophysical surveys can enhance the efficiency...
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| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2025-12-01
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| Series: | Results in Earth Sciences |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2211714825000597 |
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| Summary: | We present mapping and comparision of the geology of the southern block of the Chitradurga schist belt (CSB). We have used ASTER images and geophysical data to compare the geology. Consequently, present study confirms how remote sensing integrated with geophysical surveys can enhance the efficiency and accuracy of regional geological mapping. False colour composites, band ratios, rock indices (QI, MI, and CI), mineral indices, and broadband albedo were used for lithological mapping. Remote sensing results were correlated with digitized thematic geophysical data viz. gravity anomalies, magnetic and radiometric data. The results were validated with lithological data obtained from the Geological Survey of India. Results showed that southern portion of CSB is fringed within a gneiss and dominated by amphibolites interbedded with narrow quartzite bands. To its west, occurs a narrow belt of ultramafites and acidic intrusions. In some localities, the amphibolites are overlain by mica schists. |
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| ISSN: | 2211-7148 |