Titanite u-pb dating

You could not be signed in. Citing articles via Web of Science Bright phase is spinel. Available radiometric ages of the Cuddapah Basin and EDC lamproites show them to be of Mesoproterozoic age with a great majority emplaced between 1. Nevertheless, their overall texture and relict mineralogy remain intact and provide important insights into the nature of their magmas. Bhejripadar kimberlite volcanism, thought to be synchronous. The accuracy of the analytical protocol was verified on petrographic thin sections of several samples previously dated by ID-TIMS.

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Unfortunately, due to very low signal intensities.

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In-situ U-Pb dating of titanite in the Tokapal-Bhejripadar kimberlite system, central India

W e attempted to measure the stable Pb isotope by. Non-eruption of perceptible Proterozoic PUMU rocks in the Western Dharwar craton is envisaged as a direct consequence of lack of any significant thermal perturbation s experienced by the underlying lithospheric metasomatised? These arenearly concordant and distinct from the Rb-Sr and K-Ar crystallization ages of 3. Very limited microdiamond testing two kg samples proved negative; however, the composition of chromite grains indicate crystallization in the diamond stability field. The earlier known Tokapal ultramafic intrusive body, located beyond the km milestone in Tokapal village along the Jagdalpur—Geedam road, was reinterpreted as crater-facies kimberlite. Tokapal-Bhejripadar system was thought to represent the. Lack of unusually high abundances of PGE in the Mainpur orangeties as well as in the co-eval Deccan flood basalts and associated alkaline rocks implies that the anomalous iridium enrichment reported at the K—Pg boundary.

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