Contents

Moscow University Geology Bulletin


Vol. 75, No. 1, 2020


The Microstructure of Oxide Ferromanganese Ores in the World Ocean as Proof of their Bacterial Origin

V. V. Avdonin, E. A. Zhegallo and N. E. Sergeeva p. 1  abstract

Tectonic Inheritance and Predetermination in Supercontinental Cyclicity

N. A. Bozhko p. 7  abstract

Neotectonic Structures of Western Taimyr

G. V. Bryantseva, L. I. Demina, M. Yu. Promyslova and N. I. Kosevich p. 13  abstract

New Sedimentological, Magnetostratigraphic, and Palynological Data on the Upper Cretaceous Alan-Kyr Section (Central Crimea)

A. Yu. Guzhikov, G. N. Aleksandrova and E. Yu. Baraboshkin p. 20  abstract

“Conodont Pearls” from the Devonian Deposits of European Russia

V. M. Nazarova and Yu. A. Gatovsky p. 31  abstract

The Mazuevka Flora (Lower Permian, Middle Cis-Urals, Perm Region): New Data on Taxonomical Composition and Palaeoecology

S. V. Naugolnykh and E. M. Kirilishina p. 40  abstract

The Specific Features of the Microcomponent Composition of Pore Solutions in the Rocks of the Bazhenov Formation, Western Siberia

T. A. Kireeva, A. Yu. Bychkov and M. Yu. Zubkov p. 47  abstract

Colmatage of Reservoir Rocks in Oil Field Exploitation as a Result of Cation Exchange

A. V. Lekhov and T. A. Kireeva p. 58  abstract

On Operating Groundwater Wells in Grid-Scale Models

R. S. Shtengelov p. 67  abstract

Peculiarities of the Changes in Chemical Composition of Cryopegs of the Yamal Peninsula during Cryogenic Concentration

A. A. Shimanov, I. A. Komarov and T. A. Kireeva p. 72  abstract

Estimation of the Leakage Rate from a Riverbed According to the Data of Diurnal Temperature Oscillations in Riverbed Sediments (based on the Example of the Heihe River, Inner Mongolia, China)

P. Yu. Vasilevskii and Ping Wang p. 80  abstract

The Structure of the Sedimentary Cover in Freshwater Lakes of the Kindo Peninsula near the White Sea Biological Station of Moscow State University according to Data of Ground Penetration Radar and Boring

A. V. Starovoytov, K. Z. Valiullina, A. N. Oshkin and A. M. Pyatilova p. 86  abstract

The Influence of Salinity on the Acoustic and Electrical Properties of Frozen Soils

A. V. Koshurnikov, P. I. Kotov and I. A. Agapkin p. 97  abstract

Brief Communication

An Experimental Study of ${\text{ZrF}}_{6}^{{2 - }}$ Stability in Hydrothermal Solutions at 90–255°C

M. E. Tarnopolskaia and A. Yu. Bychkov p. 105  abstract