Abstract
Both audio-magnetotelluric and magnetotelluric data were acquired across Aravalli and Tural hot springs (in Konkan region of Deccan volcanic province). The objective is to bring out the geoelectrical crustal structure beneath these geothermal zones. Two-dimensional inversion of data brings out different conductivity anomalies (i) shallow conductivity anomaly related to upward propagation of meteoric water through faults/fracture zones, (ii) major fracture/fault zones extending up to mid-crustal depths through which Deccan volcanism may have erupted and (iii) the presence of mid-crustal conductivity anomalies are related to trapped carbonate fluids that are linked to thermal effects of Deccan volcanism.
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Acknowledgements
The authors are grateful to Prof DS Ramesh, Director of our Institute for support and encouragement. This study is supported by HERD project of the Institute. We thank coordinators Profs G Gupta and SP Anand for the keen interest and encouragement during the course of this study.
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PBV Subba Rao, Vasu Desmukh and PV Vijaya Kumar have made substantial contributions towards the conceptualization and acquisition of AMT/MT data along the Aravalli and Tural geothermal regions as well as for analysis and interpretation of data. Subba Rao and Vasu have been involved in drafting the manuscript and its interpretation. AK Singh: Reviewing and editing.
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Communicated by N V Chalapathi Rao
This article is part of the Topical Collection: Deccan Traps and other Flood Basalt Provinces – Recent Research Trends.
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Subba Rao, P.B.V., Deshmukh, V., Vijaya Kumar, P.V. et al. Electrical conductivity structure of Aravalli and Tural hot springs (western part of DVP) inferred from magnetotelluric data. J Earth Syst Sci 131, 88 (2022). https://doi.org/10.1007/s12040-022-01832-1
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DOI: https://doi.org/10.1007/s12040-022-01832-1