Geochronological and genetic characterization of basaltic basement from western offshore basins in India

Abstract

⁴⁰Ar-³⁹Ar geochronology, geochemistry, and Sr-Nd isotopic compositions of 30 core samples from 24 offshore drill wells in the Western offshore basins have been used to characterize the genetics of the volcanic basement from the Kutch, Mumbai, and Kerala-Konkan offshore basins. Findings from the volcanic basement rocks demonstrate extremely varied isotopic and geochemical fingerprints, which are suggestive of significantly diverse parent magma compositions and emplacement processes.

Keywords

⁴⁰Ar-³⁹Ar geochronology / Western offshore basins / Kutch offshore basin / Mumbai offshore basin / Kerala-Konkan offshore basin

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