A different duration of the formation of leucosome of migmatites in the K- and Na-zones of the northern Ladoga region of the southeastern Svecofennian belt, Fennoscandian shield

The duration of migmatite formation in the K and Na geochemical zones was first estimated for the Svecofennides of the northern Ladoga region. The U-Pb (TIMS) age of monazite was determined for the most complete sequence of leucosomes with geological control of their relations and relative age obser...

Full description

Saved in:
Bibliographic Details
Published inDoklady earth sciences Vol. 459; no. 1; pp. 1333 - 1337
Main Authors Baltybaev, Sh. K., Glebovistkii, V. A., Rizvanova, N. G., Fedoseenko, A. M., Lobikov, A. F.
Format Journal Article
LanguageEnglish
Published Moscow Pleiades Publishing 01.11.2014
Springer
Springer Nature B.V
Subjects
Analysis
Cratons
Crystallization
Earth and Environmental Science
Earth Sciences
Geochemistry
Geology
Migmatites
Phosphate minerals
Phosphate rock
Rheology
Cordierite
DOKLADY Earth Science
Fennoscandian Shield
206Pb
Sillimanite
Online AccessGet full text

Cover

More Information
Summary:The duration of migmatite formation in the K and Na geochemical zones was first estimated for the Svecofennides of the northern Ladoga region. The U-Pb (TIMS) age of monazite was determined for the most complete sequence of leucosomes with geological control of their relations and relative age observed in the outcrops. The duration of formation of the leucosomes in two zones is different and is not overlapped by the error of the age analysis: about 5 and no less than 10–15 Ma in the K and Na zones, respectively. The different duration of migmatite formation may reflect different temperature evolution of the rocks of the two zones and also the influence of the composition and rheological properties of migmatizing sequences, which govern the conditions of liquation, transportation, and crystallization of the anatectic melt.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:1028-334X
1531-8354
DOI:10.1134/S1028334X1410002X