Vol. 59, No. 4, 2021

Geochemistry International

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, A. V. Egorov, L. V. Kuleshevich and V. I. Kevlich p. 341 abstract

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, G. L. Leitchenkov, V. G. Batanova, B. V. Belyatsky and A. V. Zhilkina p. 357 abstract

Quartz Transformation into Opal at the Water–Vapor Interface

V. A. Alekseyev, A. A. Burmistrov and I. N. Gromiak p. 377 abstract

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, J. Y. Li, S. N. Tian, B. Chen, T. Zheng, C. J. Zhao and F. Y. Sun p. 388 abstract

Pleistocene Sediments of the Caribbean Sea

M. A. Levitan, T. A. Antonova, A. V. Kol’tsova and K. V. Syromyatnikov p. 413 abstract

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

P. S. Minyuk and V. Ya. Borkhodoev p. 422 abstract

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

P. S. Miklyaev and T. B. Petrova p. 435 abstract

Short Communications

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 and T. A. Velivetskaya p. 448 abstract

Contents

Geochemistry International

Short Communications