Transactions of KarRC RAS :: Scientific publications
Transactions of KarRC RAS :: Scientific publications

Transactions of KarRC RAS :: Scientific publications
Karelian Research Centre of RAS
ISSN (print): 1997-3217
ISSN (online): 2312-4504
Transactions of KarRC RAS :: Scientific publications
Background Editorial committee Editorial Office For authors For reviewer Russian version
Transactions of KarRC RAS :: Scientific publications

Electronic Journal OJS



Series

Biogeography

Experimental Biology

Mathematical Modeling and Information Technologies

Precambrian Geology

Ecological Studies

Limnology and Oceanology

Research in the Humanities (2010-2015)

Region: Economy and Management (2012-2015)



Issues

2023

2022

2021

2020

2019

2018

2017

2016

2015

2014

2013

2012

2011

2010

2009

1999-2008


SCIENTIFIC PUBLICATIONS
Н.А. Арестова, А.В. Юрченко, В.П. Чекулаев, С.Б. Лобач-Жученко, Г.А. Кучеровский, Е.Н. Лепехина.
Уросозерская зеленокаменная структура (Фенноскандинавский щит): геологическое строение, возраст, состав и метаморфизм вулканитов
N.A. Arestova, A.V. Yurchenko, V.P. Chekulaev, S.B. LobachZhuchenko, G. A. Kucherovsky, E.N. Lepekhina. The Urosozero greenstone structure (Fennoscandian shield): geology, composition, age and metamorphism of the volcanics // Transactions of Karelian Research Centre of Russian Academy of Science. No 2. Precambrian Geology Series. 2016. Pp. 28-39
Keywords: Fennoscandian Shield; Vodlozero domain; Urosozero greenstone structure; geology; metamorphism; U-Pb.
The results of detailed study of the Urosozero greenstone structure (northwestern part of the Vodlozero domain) of the Fennoscandian Shield are presented. The composition and the U-Pb zircon age of the volcanic rocks were studied. The Urosozero structure is composed mainly of mafic-felsic volcanic rocks rather than the sediments. Mafic and ultramafic volcanics were obtained under high degree source melting followed by crustal contamination. Intermediate and acid volcanics vary from andesites to rhyolites and are similar in composition to the volcanics of the Shiloss and Lake Kamennoe greenstone structures. The methamorphism of dacites occurred at T = 400–610 °С and P > 4 kbar. SIMS SHRIMP-II U-Pb dating of the dacite specimen was carried out on separate zircon grains at the Centre of Isotopic Research (VSEGEI, St. Petersburg). The ages received include 2875 ± 9 Ma as the time of volcanism and 2709 ± 8 Ma as the time of metamorphism. So, the volcanism of the Uros greenstone structure is synchronous with the volcanism of the northern Vodlozero domain.
Indexed at RSCI


  Last modified: March 14, 2016