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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...
Mafic dykes of Rewa basin occur along the Son-Narmada lineament between the Deccan volcanics of western India and the mafic and ultramafic dykes of the Gondwana coalfields in eastern India. In the present area of study, Umaria is from the western part, Shahdol from the central and the Chirimiri dykes are from the eastern extremity. Palaeomagnetic determinations on the Shahdol and Chirimiri dykes of...
Mafic dyke swarms are major components of the South Atlantic Large Igneous Province, which originated during the Cretaceous break up of western Gondwana. This contribution presents data on magnetic fabrics and its implications for magma flow from the major Henties Bay-Outjo dyke swarm (HOD) in coastal and inland NW Namibia. The dykes were emplaced in the NE-SW trending, Neoproterozoic Damara mobile...
Kohistan paleo-island arc is considered a complex entity of island arc and back-arc rock assemblages. It contains two major magmatic complexes: the layered ultramafic and mafic Chilas complex at the base, and the Kohistan batholith in the middle part. Back-arc basin rock assemblages, the Jaglot group, occur as septum within the Kohistan batholith. Mafic dykes intrude the ultramafic and mafic rocks...
A 140 cm thick dolerite dyke in the Vochelambina area of the Kola Peninsula, Russia, has an unexpected internal zonation that combines the features of both reverse and normal differentiation trends. From the margins inwards, the dyke exhibits a steady increase in normative An (100An/(An+Ab)), whole-rock Mg# (100 Mg/(Mg+Fetotal)), MgO and Cr and decrease in TiO2 (indicating a reverse differentiation...
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