1. Age of the Archean Strata with Banded Iron Formation in the Kostomuksha Greenstone Belt, Karelian Craton, Fennoscandian Shield: Constraints on the Geochemistry and Geochronology of Zircons

   • A. I. Slabunov
   • N. S. Nesterova
   • V. I. Kevlich

   OriginalPaper 16 April 2021 Pages: 341 - 356

   

2. Role of Pyroxenite Mantle in the Formation of the Mesozoic Karoo Plume Melts: Evidence from the Western Queen Maud Land, East Antarctica

   • N. M. Sushchevskaya
   • A. V. Sobolev
   • A. V. Zhilkina

   OriginalPaper 16 April 2021 Pages: 357 - 376

   

3. Quartz Transformation into Opal at the Water–Vapor Interface

   • V. A. Alekseyev
   • A. A. Burmistrov
   • I. N. Gromiak

   OriginalPaper 16 April 2021 Pages: 377 - 387

   

4. The Late Paleoproterozoic A-Type Granites in the Jiao-Liao-Ji Orogenic Belt, North China Craton: Petrogenesis and Implications for Post-Collision Extension

   • J. L. Sun
   • Y. Qian
   • F. Y. Sun

   OriginalPaper 16 April 2021 Pages: 388 - 412

   

5. Pleistocene Sediments of the Caribbean Sea

   • M. A. Levitan
   • T. A. Antonova
   • K. V. Syromyatnikov

   OriginalPaper 16 April 2021 Pages: 413 - 421

   

6. Response of Geochemical Characteristics on the Environmental Changes in the Holocene: Data on Bottom Sediments of Lake Maloe, Iturup Island

   • P. S. Minyuk
   • V. Ya. Borkhodoev

   OriginalPaper 16 April 2021 Pages: 422 - 434

   

7. Study of Abnormal Seasonal Variations in the Radon Exhalation Rate in a Fault Zone

   • P. S. Miklyaev
   • T. B. Petrova

   OriginalPaper 16 April 2021 Pages: 435 - 447

   

8. Application of the Sulfur Recovery Method by the Kiba Reagent for the Subsequent Isotope Analysis of Natural Sulfates and Sulfuric Acid

   • V. V. Yakovenko
   • A. V. Ignatiev
   • T. A. Velivetskaya

   SHORT COMMUNICATIONS 16 April 2021 Pages: 448 - 453