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Remarks on the thermal conductivity and heat flow density of the Indian Craton

Maj S.

Acta Geophysica

2008

Vol. 56, no. 4

994-999

The virtual or effective thermal conductivity (ETC) of the Indian subcontinental crust model is calculated from geochemical/geothermal data on the mean radiogenic heat production and on the real thermal conductivity (TC) of crystalline rocks of India. This ETC, amounting to about 3.45 W/mźK, is 1.4 time greater than the mean real TC value (about 2.5 W/mźK). This is in good agreement with the empirical relation between the surface heat flow density and the Curie depth for the Indian Craton.

A note on the lithosphere thickness and heat flow density of the Indian Craton from MAGSAT data

Sarkar R., Saha D., Saha D.

Acta Geophysica

2006

Vol. 54, no. 2

198-204

The Curie depth map of India compiled from MAGSAT data has been used for preparing the lithosphere thickness and the surface heat flow density maps of the Indian Craton, utilizing the concept of magnetothermometry. The lithosphere thicknesses of the major Indian geological units/provinces, as obtained from the prepared map, are found to be in reasonably good agreement with the previously published values for these regions. Also, the surface heat flow density values ob-tained from the prepared maps closely follow the previously published results. The maps are useful in providing first order estimates of lithosphere thickness and sur-face heat flow density of the important geological units/provinces of India.