From migmatites to crustal granites: Pb–Pb isotopic system of feldspars of partial melting products, Northern Ladoga region, Fennoscandinavian Shield

The isotopic–geochemical features of late and postorogenic granites of the S type and ambient migmatites are studied within the Russian part of the Svecofennian orogen of the Fennoscandinavian Shield. The spatial association of leucosomes of migmatites and granites of the S type and their similar pe...

Full description

Saved in:
Bibliographic Details
Published inDoklady earth sciences Vol. 468; no. 2; pp. 541 - 544
Main Authors Baltybaev, Sh. K., Ovchinnikova, G. V., Glebovitskii, V. A., Vasil’eva, I. M., Rizvanova, N. G.
Format Journal Article
LanguageEnglish
Published Moscow Pleiades Publishing 01.06.2016
Springer Nature B.V
Subjects
Earth and Environmental Science
Earth Sciences
Geochemistry
Geology
Granite
Igneous rocks
Isotopes
Marine
Metamorphic rocks
Petrology
Online AccessGet full text

Cover

More Information
Summary:The isotopic–geochemical features of late and postorogenic granites of the S type and ambient migmatites are studied within the Russian part of the Svecofennian orogen of the Fennoscandinavian Shield. The spatial association of leucosomes of migmatites and granites of the S type and their similar petro- and geochemistry and distribution of Pb isotopes are evidence of the genetic similarity of their parental melts. The Borodinskoe pluton has a more primitive 206 Pb/ 207 Pb ratio, which indicates the presence of upper and U-poor lower crustal material in the source of granitic magmas. This conclusion is supported by the ɛ Nt ( t ) lower value of granites of this pluton relative to those of other plutons of the region.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:1028-334X
1531-8354
DOI:10.1134/S1028334X16060015