(40)A-Ar-39 age of a lava flow from the bhimashankar formation, Giravali ghat, Deccan Traps

Abstract

We report here a Ar-40-Ar-39 age of 66.0 +/- 0.9 Ma (2sigma) for a reversely magnetised tholeiitic lava flow from the Bhimashankar Formation (Fm.), Giravali Ghat, western Deccan province, India. This age is consistent with the view that the 1.8-2 km thick bottom part of the exposed basalt flow sequence in the Western Ghats was extruded very close to 67.4 Ma