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Application of Landsat 8 OLI for Mapping the Deccan Traps of Kachchh, Gujarat

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Abstract

In the present study, Landsat 8 Operational Land Imager multispectral data covering Gujarat's Kachchh district have been analyzed to map the Deccan Traps. The study area is covered by different lithological units from Middle Jurassic to Holocene rock formation. Deccan Volcanics of Upper Cretaceous to Eocene age consist of Alkali Gabbro, Andesitic Trachyte, Basalt Flows, Intertrappean sediments, Dolerite dykes and Olivine Gabbro. The study aims to distinguish the basalts of Deccan Volcanics using remote sensing data. The basalts were segregated using image processing techniques such as false color composite based on the optimal index factor, band rationing, minimum noise fraction and principal component analysis. Conclusively, entire techniques used differentiated the basalts from other lithological units. The data were validated using laboratory reflectance spectra of rock samples. The map of basalt in Kachchh district was created from the processed Landsat 8 OLI image manifesting different flows, and it covers an area of total 1913.95 sq km.

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Acknowledgements

The research did not receive any specific grant from funding agencies in the public, commercial, or not-for-profit sectors. The authors are grateful to the reviewers for their constructive comments and suggestions for the betterment of the manuscript.

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Correspondence to Shreekumari Patel.

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Patel, S., Solanki, P. Application of Landsat 8 OLI for Mapping the Deccan Traps of Kachchh, Gujarat. J Indian Soc Remote Sens 48, 1253–1263 (2020). https://doi.org/10.1007/s12524-020-01152-1

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  • DOI: https://doi.org/10.1007/s12524-020-01152-1

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