Thermal and Physical Properties of Deccan Basalt and Neoarchean Basement Cores From a Deep Scientific Borehole in the Koyna−Warna Seismogenic Region, Deccan Volcanic Province, Western India: Implications on Thermal Modeling and Seismogenesis

Significant variations in thermal conductivity and density in the basaltic trap based on 78 core samples from Phanasavale borehole could be attributed to the lithological heterogeneities from massive to amygdaloidal/ vesicular basalts, while the basement to the compositional variations from granodiorites to tonalites to quartz monzodiorites. Based on gamma and sonic logs, as well as radioelements, the basaltic trap can be divided into two layers and five sub-layers, which can be correlated to basalt flows. Similarly, the underlying basement can be divided into two layers, with two times higher radioelements in the upper layer. Further, the study reveals that in addition to thermal parameters, Reservoir Triggered Seismicity also plays an important role in the seismogenesis of the region.

Crustal heat production/thermal conductivity model and temperature estimates up to 10 km

Ray, L., Gupta, R. K., Chopra, N., Gopinadh, D., & Dwivedi, S. K. (2021). Thermal and physical properties
of Deccan basalt and Neoarchean basement cores from a deep 
scientific borehole in the Koyna− Warna seismogenic region, Deccan Volcanic Province, western India: Implications on thermal modeling
and seismogenesis. Earth and Space Science, 8, e2021EA001645. https://doi.org/10.1029/2021EA001645 external link