Contents

Doklady Earth Sciences

Vol. 484, No. 2, 2019

Geology

Age and Sources of Lower Mesozoic Metasedimentary Rocks of the Un’ya-Bom Terrane in the Mongol–Okhotsk Fold Belt: Results of U–Pb Geochronological (LA-ICP-MS) and Sm–Nd Isotope Studies

V. A. Zaika, A. A. Sorokin, V. P. Kovach, Corresponding Member of the RAS A. P. Sorokin and A. B. Kotov p. 115  abstract

The Late Cryogenian Age of the Kumysty Granosyenite Complex, Greater Karatau, Southern Kazakhstan

Corresponding Member of the RAS K. E. Degtyarev, A. A. Tretyakov, E. B. Salnikova and A. B. Kotov p. 120  abstract

Early Jurassic Magmatism of the Kobyumé Graben System (Verkhoyansk Framing of the Siberian Craton) and Its Geodynamic Nature

A. I. Kiselev and Academician V. V. Yarmolyuk p. 124  abstract

Two Genetic Types of Pseudotachylytes

Corresponding Member of the RAS Yu. A. Morozov, M. A. Matveev, A. I. Smulskaya and A. L. Kulakovskii p. 129  abstract

Mineralogical–Geochemical Types and 190Pt–4He Age of Ferroan Platinum of Placers of the Anabar River Basin, Northeastern Part of the Siberian Platform

A. V. Okrugin, O. V. Yakubovich, A. M. Gedz, A. L. Zemnukhov and P. O. Ivanov p. 134  abstract

Rare Th–Sc Minerals in Picrites of the Southern Urals and Their Genetic Value

S. G. Kovalev, Corresponding Member of the RAS V. N. Puchkov, S. S. Kovalev and S. I. Vysotsky p. 138  abstract

Paleoproterozoic Age of Carbonates and Trondhjemites of the Central Azov Group: Sr Isotope Chemostratigraphy and U–Pb Geochronology

Corresponding Member of the RAS A. B. Kuznetsov, S. B. Lobach–Zhuchenko, T. V. Kaulina and G. V. Konstantinova p. 142  abstract

The Relationship between Global Volcanic Activity and Variations in the Velocity of Earth’s Rotation

Corresponding Member of the RAS B. W. Levin, E. V. Sasorova, V. B. Gurianov and Academician V. V. Yarmolyuk p. 146  abstract

The Exotic Inim Block of the Argun Superterrane of the Central Asian Fold Belt: Results of U–Th–Pb Geochronological (LA-ICP-MS) and Sm–Nd Isotopic–Geochemical Studies

R. O. Ovchinnikov, A. A. Sorokin, A. B. Kotov, E. B. Sal’nikova, V. P. Kovach and Corresponding Member of the RAS A. P. Sorokin p. 151  abstract

Geochemistry

A Case History of Applying In situ Analysis of the Sulfur Isotopic Compositions of Sulfides from Ores of the Largest Deposits in the Bodaibo Synclinorium (Eastern Siberia)

Corresponding Member of the RAS N. A. Goryachev, A. V. Ignat’ev, T. A. Velivetskaya, A. E. Budyak and Yu. I. Tarasova p. 156  abstract

A New Compound of the (K,Na)3Ca8Si6[Si4O12]3 Charoite Substrate

A. A. Kashaev, L. A. Ivanova, V. Ja. Medvedev and Z. F. Uschapovskaya p. 160  abstract

The Early Cambrian Age and Crustal Sources of Granitoids of the Goryachinskiy Pluton (Northern Baikal): Geodynamic Implications

E. Yu. Rytsk, E. B. Salnikova, Academician V. V. Yarmolyuk, A. A. Andreev, E. S. Bogomolov, Yu. M. Lebedeva, S. D. Velikoslavinsky, I. V. Anisimova, Yu. V. Plotkina and A. M. Fedoseenko p. 163  abstract

Variations of the 238U/235U Isotope Ratio in Metasedimentary Rocks and Evidence of Changes in Sedimentation Conditions during the Ediacarian Period of the Neoproterozoic

A. V. Chugaev, Academician I. V. Chernyshev, A. E. Budyak, G. V. Mandzhieva, A. S. Sadasyuk and B. I. Gareev p. 167  abstract

Geophysics

Mapping of Interplate Coupling in the Kamchatka Subduction Zone from Variations in the Earthquake Size Distribution

I. A. Vorobieva, Corresponding Member of the RAS A. A. Soloviev and P. N. Shebalin p. 173  abstract

Attenuation of Gravity Waves in Fast Ice

Corresponding Member of the RAS B. V. Levin, P. D. Kovalev, D. P. Kovalev and K. V. Kirillov p. 177  abstract

Oceanology

Features of the Distribution of Abnormal Gasgeochemical Fields in the Red River Rift (Gulf of Tonkin, South China Sea)

R. B. Shakirov, Duong Quoc Hung, N. S. Syrbu, Le Duc Anh, A. I. Obzhirov, O. V. Borzova, A. K. Okulov, Bui Van Nam, Nguyen Van Diep, Mai Duc Dong, A. A. Legkodimov, M. V. Shakirova, A. L. Ponomareva and M. S. Bakunina p. 181  abstract

Geochemistry

Phase Distribution of Rare and Rare-Earth Elements in the Silicate–Fluoride Systems at Т = 800–1200°С and Р = 1–2 kbar (Experimental Investigations)

A. R. Kotelnikov, N. I. Suk, V. S. Korzhinskaya, Z. A. Kotelnikova and Corresponding Member of the RAS Yu. B. Shapovalov p. 185  abstract

Origin of Hydrocarbons in Suspended Matter and Bottom Sediments near the Crimean Peninsula

I. A. Nemirovskaya, V. D. Onegina, Academician A. P. Lisitzin and B. V. Konovalov p. 189  abstract

The Physical Nature of Heterogeneity of the Composition of River Water

Yu. D. Chashechkin and O. M. Rosenthal p. 194  abstract

Geophysics

Infrasonic Signals from Earthquakes of December 5, 2014, in the Water Area of Lake Hovsgol, Northern Mongolia

A. G. Sorokin and A. V. Klyuchevskii p. 198  abstract

Geography

Large-Scale Atmospheric–Oceanic Interaction Regimes in the Norwegian and Barents Seas

A. A. Sizov, N. V. Mikhailova and T. M. Bayankina p. 203  abstract

Oceanology

Picophytoplankton of the Laptev Sea in Autumn

T. A. Belevich, L. V. Ilyash, E. G. Arashkevich and Corresponding Member of the RAS M. V. Flint p. 207  abstract

Geochemistry

First Data on the Nature and Age of the Protolith of High-Pressure Tectonites of Yenisei Ridge: A Link to the Early Stage of Formation of the Paleoasian Ocean

I. I. Likhanov and K. A. Savko p. 211  abstract

Geophysics

Comparison of Borehole Geoacoustic and Electromagnetic Data with Data of Earthquake Focal Mechanisms

V. A. Gavrilov, A. V. Lander and Yu. V. Morozova p. 217  abstract

Geography

New Possibilities of Remote Spectrometry of Surface Water Bodies

B. L. Sukhorukov and Corresponding Member of the RAS A. M. Nikanorov p. 222  abstract

Oceanology

Features of Vortical Suppression of Tsunami Waves by Underwater Barriers

B. V. Boshenyatov and K. N. Zhiltsov p. 227  abstract