1. “Black” Pyroxenites in Mantle Xenoliths Found in Volcanics of Some Regions in the East Asian Margin. The Evolution and Petrogenesis. Part 2. The Petrologic-Geochemical Composition, toward a Petrogenetic Model

   • A. V. Koloskov
   • V. V. Ananiev
   • P. I. Fedorov

   OriginalPaper 20 October 2021 Pages: 293 - 313

   

2. Sedankinsky Dol (Sredinny Range, Kamchatka): K–Ar Isotopic Age of Volcanoes, Relationship of Volcanic and Glacial Relief Forms

   • M. M. Pevzner
   • A. O. Volynets
   • V. A. Lebedev

   OriginalPaper 20 October 2021 Pages: 314 - 322

   

3. The Goals and Features of Monitoring of Ecosystems: The Volcanogenic Ecosystem of the Nizhne-Koshelevsky Thermal Field, South Kamchatka

   • V. V. Shanina
   • A. Yu. Bychkov

   OriginalPaper 20 October 2021 Pages: 323 - 332

   

4. The Geochemistry and Potential Fertility of Volcanic Ash Discharged by Alaid and Ebeko Volcanoes, Kuril Islands

   • L. V. Zakharikhina
   • V. A. Rashidov
   • L. P. Anikin

   OriginalPaper 20 October 2021 Pages: 333 - 348

   

5. The Geochemistry of Acid Thermal Waters on Urup Island, Kuril Islands

   • E. G. Kalacheva
   • Yu. A. Taran
   • E. V. Voloshina

   OriginalPaper 20 October 2021 Pages: 349 - 363