Date: 20 Jan 2011

An Integrated Study of Proterozoic Dykes, Dharwar Craton, Southern India

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The integration of paleomagnetic data with geochronological and geochemical analyses of mafic dyke swarms is a powerful tool for correlating the swarms on regional and global scales. The multidisciplinary approach may also provide important insights into various problems of Earth evolution. We present new results of our paleomagnetic and geochemical investigations of several Proterozoic dykes from the Dharwar craton (Southern India). When combined with the available geochronological data, our data support the presence of at least two different E-W trending dyke swarms (~2,370 and ~1,890 Ma) in the Dharwar craton. Our results are also consistent with the possibility that the Bastar and Dharwar cratons were amalgamated before ~2,370 Ma.