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Effect of local topography/structure on lava flow direction: A view from Ananthagiri Hills from Deccan Basalts, India.

Satyakumar AV, Mrinal A, Ojha AK, Ashok J, Venkateshwarlu M.

JOURNAL OF VOLCANOLOGY AND GEOTHERMAL RESEARCH

https://doi.org/10.1016/j.jvolgeores.2025.108408 

The results show the Anisotropy of magnetic susceptibility, Rock magnetism, and petrology to understand the lava flow directions of Deccan basalts at Ananthagiri Hills. Based on all these observations, it is inferred that the local paleo-topography and structures before the Deccan eruption at ~65 Ma in the basement Dharwar craton affect the lava flow in the study region with an anomalous SW-directed flow.

Fig: Stereonets show the distribution of the principal susceptibility axes along with flow direction. Mean Susceptibility frequency distribution, anisotropy parameter are also plotted.

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