Contents

Petrology

---

Vol. 29, No. 5, 2021

---

Neoarchean Granitoids in the Western Part of the Tunguska Superterrane, Basement of the Siberian Platform: Geochronology, Petrology, and Tectonic Significance

A. V. Samsonov, V. V. Postnikov, V. A. Spiridonov, Yu. O. Larionova, A. N. Larionov, A. V. Travin, O. V. Postnikova, N. V. Solovyeva, I. A. Sabirov and I. V. Spiridonov p. 449  abstract

Petrology of the Mid-Paleoproterozoic Tiksheozero Ultramafic‒Alkaline‒Carbonatite Complex (Northern Karelia)

E. V. Sharkov, A. V. Chistyakov, M. M. Bogina, V. V. Shchiptsov, B. V. Belyatsky and P. V. Frolov p. 475  abstract

Comparative Analysis of the Compositions of Archean and Phanerozoic Basalts: Possibilities and Limitations of Geodynamic Reconstructions on Geochemical Data

S. D. Velikoslavinskii, D. P. Krylov, A. B. Kotov, V. P. Kovach, E. V. Tolmacheva and T. M. Skovitina p. 502  abstract

Plume Magmatism at Franz Josef Land

Yu. V. Karyakin, E. V. Sklyarov and A. V. Travin p. 528  abstract

Experimental Study of Cation-Exchange Equilibria of Solid Solutions of Gallium Feldspars (Na,K)GaSi₃O₈ with Water–Salt Fluid (NaCl–KCl–H₂O) at 550°С and 1.5 Kbar

A. R. Kotelnikov, N. I. Suk, G. M. Akhmedzhanova and Z. A. Kotelnikova p. 561  abstract

Geochronology, Geochemistry and Tectonic Significance of Buziwannan Late Triassic I-Type Granites in the West Kunlun Orogen Belt, Northwest China

Peiwen Chen and Qingdong Zeng p. 575  abstract

---