We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
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.
- Authors
Glebovistkii, V.; Baltybaev, Sh.; Rizvanova, N.; Fedoseenko, A.; Lobikov, A.
- Abstract
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.
- Subjects
BALTIC Shield; MIGMATITE; ANALYTICAL geochemistry; POTASSIUM ores; URANIUM ore geology; LANDFORMS
- Publication
Doklady Earth Sciences, 2014, Vol 459, Issue 1, p1333
- ISSN
1028-334X
- Publication type
Article
- DOI
10.1134/S1028334X1410002X