High-heat-producing granites of East Dharwar Craton around Gugi, Karnataka, and their possible influence on the evolution of Rajapur thermal springs, Deccan Volcanic Province, India

Singh, Hemant K. and Kumar, Yadvendra and Chandrasekharam, Dornadula and Gurav, Trupti and Singh, Banambar (2014) High-heat-producing granites of East Dharwar Craton around Gugi, Karnataka, and their possible influence on the evolution of Rajapur thermal springs, Deccan Volcanic Province, India. Geothermal Energy, 2 (1). ISSN 2195-9706

[img]
Preview
Text (Published Version)
High heat.pdf
Available under License Creative Commons Attribution.

Download (1MB) | Preview

Abstract

Background: The thermal springs of Rajapur situated along the west coast of Maharashtra and parts of high-heat-generating granites of Gugi in Karnataka (India) seem to be genetically related. The present investigation involves quantification of the heat generated by the Gugi Granites using the the U, Th and K contents in the rock samples and probing their possible influence on the evolution of the Rajapur springs, based on the geochemistry of the thermal waters, published Bouguer gravity anomaly data, and the overall geological setup. Methods: Fourteen water samples from Rajapur including thermal and groundwater samples were analysed for major ions and five rock samples from the gugi area were analysed for U, Th and K. Results: Rajapur thermal spring is of Na-HCO3 type, while other thermal springs along the west coast are either Na-Cl type or Na-Cl-CO3 type. The stable isotope data of the thermal waters signifies mixing with the ground water. The gravity anomaly data supports the extension of the Gugi Granites below the Deccan Volcanics of the study area. Conclusions: The present investigation suggests that the Gugi Granites could be the main source of heat for these thermal springs, even though the springs issue through the Deccan volcanic flows.


Statistics for USQ ePrint 35982
Statistics for this ePrint Item
Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Published version deposited according to the Creative Commons: Attribution 3.0 license.
Faculty/School / Institute/Centre: Historic - Faculty of Health, Engineering and Sciences - School of Agricultural, Computational and Environmental Sciences (1 July 2013 - 5 Sept 2019)
Faculty/School / Institute/Centre: Historic - Faculty of Health, Engineering and Sciences - School of Agricultural, Computational and Environmental Sciences (1 July 2013 - 5 Sept 2019)
Date Deposited: 12 Aug 2019 04:53
Last Modified: 12 Aug 2019 04:56
Uncontrolled Keywords: Gugi granite, heat generation, heat source, Rajapur thermal springs, chlorine compounds, geothermal springs
Fields of Research (2008): 05 Environmental Sciences > 0599 Other Environmental Sciences > 059999 Environmental Sciences not elsewhere classified
Identification Number or DOI: 10.1186/s40517-014-0002-4
URI: http://eprints.usq.edu.au/id/eprint/35982

Actions (login required)

View Item Archive Repository Staff Only