Paleoproterozoic layered PGE-bearing Monchetundra pluton, Kola Peninsula: Sm–Nd age of metamorphic alteration of mafic rocks

The aim of this work is Sm–Nd study of metamorphic alteration of massive gabbronorites from the Monchetundra pluton. The mafic rocks of the pluton are unevenly metamorphosed up to amphibolite facies with the formation of garnet, hornblende, and other minerals. The presence of garnet is a distinctive...

Full description

Saved in:
Bibliographic Details
Published inDoklady earth sciences Vol. 464; no. 1; pp. 885 - 888
Main Authors Kunakkuzin, E. L., Serov, P. A., Bayanova, T. B., Nerovich, L. I., Borisenko, E. S.
Format Journal Article
LanguageEnglish
Published Moscow Pleiades Publishing 01.09.2015
Springer
Springer Nature B.V
Subjects
Cratons
Earth and Environmental Science
Earth Sciences
Geochemistry
Geology
Geophysics
Metamorphism
Mineralogy
Plate tectonics
Europe, Baltic Shield
DOKLADY Earth Science
143Nd
Mafic Rock
Ilmenite
Kola Peninsula
Online AccessGet full text

Cover

More Information
Summary:The aim of this work is Sm–Nd study of metamorphic alteration of massive gabbronorites from the Monchetundra pluton. The mafic rocks of the pluton are unevenly metamorphosed up to amphibolite facies with the formation of garnet, hornblende, and other minerals. The presence of garnet is a distinctive feature of this pluton in comparison with other Paleoproterozoic PGE-bearing plutons of the eastern part of the Baltic shield: Mt. General’skaya, Fedorovo–Pana, Imandra lopolith, and Monchepluton [9]. The degree of metamorphic alteration of rocks increases near the faults, the largest of which is Monchetundra fault separating the studied pluton from the Monchepluton. This fault was formed about 1.9–2.0 Ga ago according to Sm–Nd and Rb–Sr mineral isochrons for minerals from metagabbro–anorthosites of the M1 well.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:1028-334X
1531-8354
DOI:10.1134/S1028334X15070181