21 Result(s)

Chapter and Conference Paper

E. S. Fedorov’s “Drusites”: Metamorphic Reaction Structures in Paleoproterozoic Metagabbronorites of the Belomorian Province of the Fennoscandian Shield

The reaction structures (coronas) in metagabbronorites from the Belomorian Province were resulted from two stages of high-grade metamorphism. The early garnet-free coronas were formed at olivine/plagioclase bo...

P. Ya. Azimov in XIII General Meeting of the Russian Minera… (2023)

Article

А History of Coronitic Metagabbronorites in the Belomorian Province, Fennoscandian Shield: U-Pb (CA-ID-TIMS) Dating of Zircon–Baddeleyite Aggregates

The estimation of crystallization and metamorphic reworking ages of mafic rocks in the polycyclic Precambrian areas is a difficult problem. Magmatic baddeleyite can be partially or completely replaced by polyc...

E. B. Salnikova, A. V. Stepanova, P. Ya. Azimov, M. A. Sukhanova, A. B. Kotov… in Petrology (2022)

Article

Geochronology and Geodynamic Settings of Metamorphic Complexes in the Southwestern Part of the Tuva-Mongolian Terrane, Central Asian Foldbelt

The Sangilen and Khan-Khuhei blocks in the southwestern part of the Tuva-Mongolian terrane (TMT) combine into a composite structure, formed in the course of the Early Paleozoic (ca. 505–495 Ma) regional low- t...

I. K. Kozakov, V. P. Kovach, E. B. Salnikova… in Stratigraphy and Geological Correlation (2021)

Article

Sr and C Isotope Chemostratigraphy of the Paleoproterozoic Metacarbonate Rocks of the Sortavala Group: Fennoscandian Shield, Northern Ladoga Area

The first Sr isotope data and the new C isotope signatures have been obtained for the metacarbonate rocks of the Sortavala Group in the Fennoscandian Shield. The metacarbonate rocks of the lower carbonate hori...

I. M. Gorokhov, A. B. Kuznetsov, P. Ya. Azimov… in Stratigraphy and Geological Correlation (2021)

Article

Sr- and C-Chemostratigraphy Potential of the Paleoproterozoic Sedimentary Carbonates under Medium-Temperature Metamorphism: the Ruskeala Marble, Karelia

Comprehensive petrological and isotope-geochemical study of marble was carried out in the upper part of the Sortavala Group of the northeastern lense at the Ruskeala deposit in the Northern Ladoga area. The pe...

A. B. Kuznetsov, I. M. Gorokhov, P. Ya. Azimov, E. O. Dubinina in Petrology (2021)

Article

Tectonic Position of the Late Neoproterozoic–Early Paleozoic Metamorphic Belts within the Tuva–Mongolian Terrane of the Central Asian Orogenic Belt

The Tuva–Mongolian terrane (TMT) of the Central Asian Orogenic Belt is a composite structure with a Vendian–Cambrian terrigenous–carbonate cover. The formation of the northern part of TMT is marked by the gran...

I. K. Kozakov, E. B. Salnikova, I. V. Anisimova, P. Ya. Azimov, V. P. Kovach… in Petrology (2019)

Article

Early Paleozoic UHT/LP Metamorphism in the Sangilen Block of the Tuvino-Mongolian Massif

The P–T conditions of Early Paleozoic metamorphism in the Sangilen block of the Tuvino-Mongolian Massif (southeastern part of the Central Asian Mobile Belt) achieved a value of 910–950°C and 3–4 kbar, which corre...

P. Ya. Azimov, I. K. Kozakov, V. A. Glebovitsky in Doklady Earth Sciences (2018)

Article

Geodynamics of the origin of granulites in the Sangilen block of the Tuva–Mongolian terrane, Central Asian Orogenic Belt

The Tuva–Mongolian terrane of the Central Asian Orogenic Belt is a composite structure with a Vendian–Cambrian terrigenous–carbonate cover. The Sangilen block in the southern part of the belt is a smaller comp...

I. K. Kozakov, P. Ya. Azimov in Petrology (2017)

Article

2.5 Ga gabbro-anorthosites in the Belomorian Province, Fennoscandian Shield: Petrology and tectonic setting

The Vorochistoozersky, Nizhnepopovsky, and Severo-Pezhostrovsky gabbro-anorthosite massifs have been studied in the central part of the Belomorian Province, Fennoscandian Shield. The similarity of geological s...

A. V. Stepanova, V. S. Stepanov, A. N. Larionov, P. Ya. Azimov, S. V. Egorova… in Petrology (2017)

Article

Heterogeneous basement reworking during Paleoproterozoic collisional orogeny within the Belomorian province, Fennoscandian Shield

The distribution of cross-cutting and pseudoconcordant contacts of Paleoproterozoic metagabbro and their Archean host rocks were studied in the central part of the Belomorian province of the Fennoscandian Shie...

I. I. Babarina, A. V. Stepanova, P. Ya. Azimov, N. S. Serebryakov in Geotectonics (2017)

Article

Polymetamorphism of the Chupa Sequence of the Belomorian mobile belt (Fennoscandia): Evidence from the isotope-geochemical (U-Pb, REE, O) study of zircon

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 t...

S. G. Skublov, P. Ya. Azimov, X.-H. Li, V. A. Glebovitskii… in Geochemistry International (2017)

Article

Archaean and palaeoproterozoic migmatizations in the Belomorian Province, Fennoscandian Shield: Petrology, geochronology, and geodynamic settings

Multiple repetitions of migmatization processes are an important indication of the polychronous evolution of Precambrian Mobile Belts: this is certainly true for the Belomorian Belt. In the Belomorian Province...

A. I. Slabunov, P. Ya. Azimov, V. A. Glebovitskii, L. Zhang… in Doklady Earth Sciences (2016)

Article

Pb-Sr-O-C isotope compositions of metacarbonate rocks of the Derbina Formation (East Sayan): Chemostratigraphic and geochronological significance

The Pb-Sr-O-C isotope compositions of calcite marbles of the Derbina Formation, exposed in the northwestern part of the Derbina block of the East Sayan, were studied. Rocks of the Derbina Formation were metamo...

I. M. Gorokhov, A. B. Kuznetsov… in Stratigraphy and Geological Correlation (2016)

Article

Convergent boundaries and related igneous and metamorphic complexes in caledonides of Central Asia

Fragments of the crystalline complexes where Vendian metamorphism of moderate and elevated pressure predated Early Paleozoic metamorphism have been established in the accretionary-collisional domain of the eas...

I. K. Kozakov, E. B. Sal’nikova, V. V. Yarmolyuk, A. M. Kozlovsky… in Geotectonics (2012)

Article

Provenance of the Sumian basal schists and age of the Lopian metavolcanic rocks at the Archean-Proterozoic boundary in the Kukasozero structure, North-Karelian zone of the Karelides, Baltic Shield

This paper presents the results of a study of the Paleoproterozoic basal garnet-kyanite-staurolite-two-mica paraschists from the Kukasozero structure of the Karelides of Northern Karelia, Baltic Shield, underl...

V. V. Balagansky, N. L. Alexejev, H. Huhma… in Stratigraphy and Geological Correlation (2011)

Article

Geodynamic settings and formation conditions of crystalline complexes in the south Altai and south Gobi metamorphic belts

The Hercynian mobile belts in Central Asia comprise the Hercynian proper and the Late Hercynian (Indosinian) belts separated by the South Gobi microcontinent, the origin of which is related to the evolution of...

I. K. Kozakov, A. N. Didenko, P. Ya. Azimov, T. I. Kirnozova… in Geotectonics (2011)

Article

Crystallization in solid solution-aqueous solution systems: Thermodynamic and kinetic approaches

A new phenomenological approach is proposed to describe the crystallization kinetics in solid solution-aqueous solution binary systems. The phase diagrams, equilibria, and quasie-quilibria are considered withi...

A. G. Shtukenberg, Yu. O. Punin, P. Ya. Azimov in Crystallography Reports (2010)

Article

Age, mineral geochemistry, and conditions of the formation of the Shueretskoe garnet deposit (Belomorian Belt)

S. G. Skublov, L. K. Levskii, Yu. B. Marin, I. M. Gembitskaya… in Doklady Earth Sciences (2009)

Article

P-T history of the HT/HP granulite metamorphism associated with thrusting in a junction zone between the Porya Guba and Umba blocks, Lapland Granulite Belt (Northeastern Baltic Shield)

P. Ya. Azimov, S. A. Bushmin in Doklady Earth Sciences (2009)

Article

Solubility of minerals of metamorphic and metasomatic rocks in hydrothermal solutions of varying acidity: Thermodynamic modeling at 400–800°C and 1–5 kbar

The character of solubility of 61 metamorphic and metasomatic minerals in an aqueous fluid was analyzed as a function of temperature, pressure, and fluid acidity by means of computer simulation of mineralfluid...

P. Ya. Azimov, S. A. Bushmin in Geochemistry International (2007)