NEW AGE DATA ON KIMBERLITES FROM THE YAKUTIAN DIAMONDIFEROUS PROVINCE

Abstract

Among the approximately 30 kimberlite fields discovered within the Siberian Craton, 25 make up the Yakutian kimberlite province. The study of the relationships between kimberlites and host rocks, fauna in xenoliths of the host rocks [1], and comparison of isotopic datings with different grades of reliability during the two decades after their discovery in 1954 has made it possible to distinguish three stages of Yakutian kimberlite magmatism: Middle Paleozoic (Late Devonian-Early Carboniferous), Triassic, and Late Mesozoic [2]. The fields of the southern part of the province formed in Middle Paleozoic, mainly in the Devonian. The northern part of the province mainly consists of Mesozoic kimberlite fields.