Petrology, 2022, V. 30, No. 1.

Multiple Melting of a Heterogeneous Mantle and Episodic
Accretion of Oceanic Crust in a Spreading Zone: 
Zircon U-Pb Age and Hf-O Isotope Evidence from 
an Oceanic Core Complex of the Mid-Atlantic Ridge
N. S. Bortnikov, S. A. Silantyev, F. Bea, P. Montero, 
T. F. Zinger, S. G. Skolotnev and E. V. Sharkov 
p. 1  

Residual Melt after the Crystallization of Oxide Gabbro: 
An Example of a Silicic Product of MORB Differentiation 
in the Modern Oceanic Crust, Ashadze Complex, Central Atlantic
K. N. Sholukhov, V. Yu. Prokofiev, I. P. Solovova, 
S. E. Borisovsky, O. M. Zhilicheva and A. N. Pertsev 
p. 25  

Paleogene Volcanism in the Northern Okhotsk Region
V. V. Akinin, V. N. Smirnov, P. I. Fedorov, 
G. O. Polzunenkov and D. I. Alekseev 
p. 40  

Thermodynamic Modeling of the Formation of 
Corundum-Bearing Metasomatic Rocks in the 
Belomorian Mobile Belt, Fennoscandian Shield
E. Yu. Akimova and A. B. Kol’tsov 
p. 60  

Volcanic Massive Sulfide Complexes of the Magnitogorsk 
Paleoisland Arc Megazone in the Southern Urals: 
Models of Ore-Magmatic System and Geodynamic Reconstructions
A. M. Kosarev, V. N. Puchkov, I. B. Seravkin 
and G. T. Shafigullina 
p. 82  

Petrology and Mineral Chemistry of the Oligocene–Miocene 
Qazan Granitoids from Central Urumieh-Dokhtar Magmatic Arc, 
Iran: Implications for the Neo-Tethyan Subduction
Maria Chavide, Seyed Mohsen Tabatabaei Manesh and 
Jamshid Ahmadian 
p. 107