Akimova, E. Yu. Kol’tsov, A. B.
Published in
Petrology
bstractThe mineral zoning of corundum-bearing rocks of the Belomorian mobile belt, whose genesis remains controversial, has been studied at one of the typical occurrences: Khitoostrov. Based on the estimates of the P–T parameters of the formation of corundum-bearing rocks by the multiequilibrium thermobarometry method, pseudosections were construct...
Berezin, A. V. Salimgaraeva, L. I. Skublov, S. G.
Published in
Petrology
The detailed mineralogical-geochemical study of eclogites and their retrograde products (amphibolites in a rim of eclogite boudin) from Vichennaya Luda Island (Keret Archipelago, White Sea) revealed systematic variations in major-, trace and rare-earth element composition of rock-forming minerals, which should be taken into account in geochronologi...
Astafiev, B. Yu. Voinova, O. A.
Published in
Geotectonics
AbstractMetasomatites of the White Sea mobile belt of the Fennoscandian (Baltic) shield are considered. Metasomatites are traced from southeast to northwest for a distance of ≥550 km. In mineral composition, metasomatites correspond to the paragenesis of amphibolite facies of regional high-pressure metamorphism. To determine the tectonic position o...
Akimova, E. Yu. Kozlov, E. N. Lokhov, K. I.
Published in
Geochemistry International
The noble gas isotopic composition is studied in gas-liquid microinclusions from minerals of the corundum-bearing and host rocks of the Khitoostrov occurrence, North Karelia. It was established for the first time that fluid participating in the formation of rocks with anomalous oxygen isotopic composition is devoid of an atmospheric component, whil...
Skublov, S. G. Azimov, P. Ya. Li, X.-H. Glebovitskii, V. A. Melnik, A. E.
Published in
Geochemistry International
U-Pb age and isotope-geochemical features were determined for zircon from kyanite gneisses and amphibolites of the Chupa Sequence of the Belomorian mobile belt (BMB) of the Fennoscandian shield. The cores of the zircon from the gneisses marks the Neoarchean events within 2700–2800 Ma known in the BMB, while those of the amphibolites correspond to t...
Lubnina, N. V. Slabunov, A. I. Stepanova, A. V. Bubnov, A. Yu. Kosevich, N. I. Novikova, M. A. Tarasov, N. A.
Published in
Moscow University Geology Bulletin
As a resulting of comprehensive studies of Paleoproterozoic igneous complexes a regular remagnetization trend is revealed. It is shown that the remagnetization front propagated from the northwest to southeast. The obtained remagnetization trend probably reflects the direction of the collision in the Paleoproterozoic. Correlation between remagnetiza...
Travin, V. V.
Published in
Geotectonics
Data on the localization of eclogitized mafic bodies in steeply and superposed gently dipping ductile shear zones in the area of Gridino village are considered. The process of eclogitization in steeply dipping ductile shear zones, which affect basites of rootless bodies (fragments of tectonic mélange) and dikes, was determined by deformations. Such...
Meinhold, G.
Published in
Geochemistry International
Skublov, S. G. Zack, T. Berezin, A. V. Mel’nik, A. E. Rizvanova, N. G.
Published in
Geochemistry International
