Doklady Earth Sciences, 2021, V 497, No. 2.


The First Data of U/Pb and 40Ar/39Ar Dating of the Pre-Dzhugdzhur 
Volcanics: New Evidence of Time Diversity in the Formation of 
Individual Sectors of the Okhotsk–Chukotka Volcanogenic Belt
V. F. Polin, P. L. Tikhomirov, Academician A. I. Khanchuk 
and A. V. Travin 
p. 273  

Geology of Ore Deposits Late Paleozoic Age of Intrusive Rocks from the “Trondhjemite” Massif of the Tyrnyauz W–Mo Deposit (North Caucasus, Russia): The First Results of U–Pb Isotope Dating of Zircon (LA–ICP–MS Method) S. G. Soloviev, S. G. Kryazhev, D. V. Semenova, Yu. A. Kalinin and Academician N. S. Bortnikov p. 281
Geochemistry Positive δ13C Anomaly and Sr Isotope Composition in Paleoproterozoic Limestone of the Tim Formation within the Kursk Block, Sarmatia K. A. Savko, Corresponding Member of the RAS A. B. Kuznetsov, M. Yu. Ovchinnikova and A. Yu. Kramchaninov p. 286 Steroid Phytohormones in Coal Deposits: a Geochemical Bridge between Ancient and Modern Plants Foreign Member of the RAS R. G. Garetsky, A. V. Baranovsky, V. N. Zhabinskii, R. P. Litvinovskaya, A. G. Pryadko, A. L. Sauchuk, S. A. Fatykhava, V. A. Khripach and P. S. Shabunya p. 291 Redox State of Tektites from Different Scattering Fields: Evidence from the Data of Electrochemical Study of Intrinsic Oxygen Fugacity O. A. Lukanin, E. V. Zharkova and V. G. Senin p. 295
Mineralogy Sulfide-Bearing Polymineralic Inclusions in Mantle-Derived Garnets from Lamprophyres of the Chompolo Field (Central Aldan, Siberian Craton) E. I. Nikolenko, I. S. Sharygin, D. I. Rezvukhin, V. G. Malkovets, N. S. Tychkov and Academician N. P. Pokhilenko p. 300 The Pseudobrookite Group: Crystal Chemical Features of the Armalcolite Fe2+ Analogue O. N. Kazheva, N. V. Zubkova, Ch. Schäfer, N. V. Chukanov, Corresponding Member of the RAS I. V. Pekov, S. N. Britvin and Academician of the RAS D. Yu. Pushcharovsky p. 305
Geophysics Ionic Composition of the Earth’s Exosphere during a Reversal of the Solar Magnetic Field M. S. Ivanov and V. B. Lapshin p. 310 Estimates of Direct Radiative Forcing Impact on Surface Air Temperature Changes in the Modern Period Corresponding Member of the RAS V. A. Semenov and M. A. Aleshina p. 314 Diffuse-Interface Simulation of Wave Fields in Porous Media G. V. Reshetova and E. I. Romensky p. 319
Seismology Peculiarities of the Seismic Activation of Avacha Volcano in Late 2019 P. P. Firstov, A. A. Shakirova, A. P. Maksimov and E. V. Chernykh p. 323
Oceanology Alongshore Fluxes of Sand Sediments in the Region of Propagation of Tropical Cyclones (Example of the Hicacos Peninsula, Cuba) B. V. Divinsky, N. N. Dunaev and R. D. Kosyan p. 328 Dynamics of Sedimentary Waves over the Western Slope of the Caspian Sea A. K. Ambrosimov and Academician A. P. Lisitsyn p. 341
Land Water Problems Nonlinear Effects in the Formation of Water Quality Corresponding Member of the RAS V. I. Danilov-Danilyan and O. M. Rosenthal p. 345
Geoecology Variations in the Aboveground Phytomass in Northern Eurasia in the 21st Century Corresponding Member of the RAS A. A. Tishkov, A. N. Krenke, S. V. Titova, E. A. Belonovskaya and N. G. Tsarevskaya p. 348