Petrology, 2018, V 26, N 1.

Chronology of Magmatic Activity and Petrologic–Mineralogical
Characteristics of Lavas of Kazbek Quaternary Volcano,
Greater Caucasus
V. A. Lebedev, A. V. Parfenov, G. T. Vashakidze, 
Q. A. Gabarashvili, I. V. Chernyshev and 
M. G. Togonidze 
p. 1  

The Composition and Age of the Mesoarchean 
Gabbro in the South Vygozersky and Kamennoozersky 
Greenstone Structures, Karelia
T. A. Myskova, I. A. Zhitnikova and P. A. Lvov 
p. 29  

Genesis of the Paleoproterozoic Rare-Metal 
Granites of the Katugin Massif
T. V. Donskaya, D. P. Gladkochub, E. V. Sklyarov, 
A. B. Kotov, A. M. Larin, A. E. Starikova, 
A. M. Mazukabzov, E. V. Tolmacheva and 
S. D. Velikoslavinskii 
p. 47  

Ultrapotassic Volcanism of the Valagin Ridge, Kamchatka
P. I. Fedorov and E. S. Bogomolov 
p. 65  

Impactor Type and Model of the Origin of the 
Zhamanshin Astrobleme, Kazakhstan
T. A. Gornostaeva, A. V. Mokhov, 
P. M. Kartashov and O. A. Bogatikov 
p. 82  

Island-arc and Active Continental Margin Adakites 
from the Sabzevar Zone, Iran
Hadi Omrani p. 96