eCite Digital Repository

Carbonatite magmatism of the southern Siberian Craton 1 Ga ago: Evidence for the beginning of breakup of Laurasia in the early Neoproterozoic

Citation

Savelieva, VB and Danilova, YV and Bazarova, EP and Ivanov, AV and Kamenetsky, VS, Carbonatite magmatism of the southern Siberian Craton 1 Ga ago: Evidence for the beginning of breakup of Laurasia in the early Neoproterozoic, Doklady Earth Sciences, 471, (1) pp. 1140-1143. ISSN 1028-334X (2016) [Refereed Article]

Copyright Statement

Copyright Pleiades Publishing, Ltd.

DOI: doi:10.1134/S1028334X16110222

Abstract

Apatite and biotite from dolomite‒ankerite and calcite‒dolomite carbonatite dikes emplaced into the Paleoproterozoic metamorphic rock complex in the southern part of the Siberian Craton are dated by the UPb (LA-ICP-MS) and 40Ar39Ar methods, respectively. Proceeding from the lower intercept of discordia with concordia, the age of apatite from calcite‒dolomite carbonatite is estimated to be 972 21 Ma and that for apatite from dolomite‒ankerite carbonatite, as 929 37 Ma. Values derived from their upper intercept have no geological sense. The ages obtained for biotite by the 40Ar39Ar method are 965 9 and 975 14 Ma. It means that the formation of carbonatites reflects the earliest phases of the Neoproterozoic stage in extension of the continental lithosphere.

Item Details

Item Type:Refereed Article
Research Division:Earth Sciences
Research Group:Geology
Research Field:Igneous and Metamorphic Petrology
Objective Division:Expanding Knowledge
Objective Group:Expanding Knowledge
Objective Field:Expanding Knowledge in the Earth Sciences
Author:Kamenetsky, VS (Professor Vadim Kamenetsky)
ID Code:113384
Year Published:2016
Funding Support:Australian Research Council (DP130100257)
Deposited By:Earth Sciences
Deposited On:2016-12-22
Last Modified:2017-02-22
Downloads:0

Repository Staff Only: item control page