Open AccessSm-Nd isotopy of the dykes of the Vorontsovskoe gold-ore deposit (Northern Urals)
Author(s) -
О. Б. Азовскова,
Geochemistry Ub Ras,
E. I. Soroka,
M. Yu. Rovnushkin,
N. G. Soloshenko
Publication year - 2020
Publication title -
vestnik geonauk
Language(s) - English
Resource type - Journals
ISSN - 2712-7761
DOI - 10.19110/geov.2020.9.1
Subject(s) - mafic , geochemistry , geology , magmatism , metasomatism , alkalinity , chemistry , paleontology , organic chemistry , mantle (geology) , tectonics
The Vorontsovskoye gold-ore deposit (Northern Urals) generally corresponds to the Carlin-type. One of the deposit features is the presence of numerous dykes of mafic and middle chemical composition, of normal and increased alkalinity. Sm-Nd isotope studies for the first time confirmed the dykes formation age 340 ± 35 Ma. These data can be indicative of the post-collisional stage of magmatism in this area. The positive Nd values suggest a probable abyssal magmatic source of Nd.