U-Pb Age of Rutile from the Eclogite Xenolith of the Udachnaya Kimberlite Pipe

摘要

The Udachnaya kimberlite pipe in the Daldyn kimberlite field (Daldyn-Alakit region) of the central part of the Yakutian diamond province is the largest diamond deposit in Russia and one of the largest in the world. The pipe consists of two conjugate bodies: Udachnaya-East and Udachnaya-West. As is evident from the U-Pb dating of perovskites from kimberlites, the ages of the Udachnaya pipe formation are 367 ± 3 and 367 ± 5 Ma (Udachnaya-East); 361 ± 4 and 353 ± 5 Ma (Udachnaya-West).