Contents
Transactions (Doklady) of the Russian Academy of Sciences/Earth Science Section


Vol. 380, No. 7, 2001

English language translation of the journal is available from MAIK “Nauka / Interperiodica” (Russia).
Doklady Earth Sciences ISSN 1028-334X. Translated from Doklady Akademii Nauk, Volume 380, Nos. 1–4


Volume 380, September–October.

Part 1. Geology

Position of the Kazakh–Kyrgyz Continent in the Late Ordovician:
Evidence from the Paleomagnetic Data

M. L. Bazhenov, V. S. Burtman, N. M. Levashova, and A. V. Mikolaichuk p. 753  abstract

Early Triassic A-Granites in the Taimyr Region as a Result of a North Asian Superplume

V. A. Vernikovskii, V. L. Pease, A. E. Vernikovskaya, A. P. Romanov,
D. J. Gee, and A. V. Travin
p. 758  abstract

The Ural–Arctic Devonian–Carboniferous Basin

S. V. Ruzhentsev, A. N. Didenko, and N. V. Lubnina p. 764  abstract

Two Stages in the Development of Plagiogranitoids
in the Western Mugodzhary Volcanic Zone (Southern Urals)

G. I. Samarkin, E. Ya. Samarkina, and B. A. Kaleganov p. 768  abstract

Magnesian Andesites in Rift Structures of the Amur Craton

V. G. Sakhno and V. G. Moiseenko p. 773  abstract

The Lower Boundary of the Upper Devonian Zilair Group
on the Eastern Slope of the Southern Urals

G. A. Mizens, V. V. Chernykh, and A. G. Mizens p. 778  abstract

A Geothermal 3D Model of the Kara Sea Shelf and Forecast for Its Petroleum Potential

L. V. Podgornykh, M. D. Khutorskoi, I. S. Gramberg, and Yu. G. Leonov p. 782  abstract

Fragments of the Late Devonian Active Margin
in the Structure of the Sakmara Zone of the Southern Urals

A. V. Ryzantsev, S. V. Dubinina, and D. V. Borisenok p. 787  abstract

An Unusual Pyrope–Grossular Garnet and Its Paragenesis
from Diamondiferous Carbonate–Silicate Rocks of the Kokchetav Massif, Kazakhstan

N. V. Sobolev, H-P. Schertl, M. Burchard, and V. S. Shatsky p. 791  abstract

Pyroxenite Paragenesis of Abundant Mineral and Probable Fluid Inclusions
in Microdiamonds from the Mir Kimberlite Pipe, Yakutia

A. M. Logvinova, D. A. Zedgenizov, and N. V. Sobolev p. 795  abstract

Model of the Development of a Sedimentary Basin of the Pull-Apart Type

O. P. Polyansky and N. L. Dobretsov p. 800  abstract

Crystalline Inclusions in Diamonds from Kimberlites
of the Snap Lake Area (Slave Craton, Canada):
New Evidences for the Anomalous Lithospheric Structure

N. P. Pokhilenko, N. V. Sobolev, J. A. McDonald, A. E. Hall, E. S. Yefimova,
D. A. Zedgenizov, A. M. Logvinova, and L. F. Reimers
p. 806  abstract

The Nature of the Crust/Mantle Boundary in Ophiolite Sequences

A. Ya. Sharaskin and A. L. Knipper p. 812  abstract

New Data on Nappe Structure of the Baikal Range

V. K. Aleksandrov, V. I. Sizykh, A. A. Bukharov, and V. D. Mats p. 815  abstract

Experimental Modeling of the Effect of Convection of Mass Crystallization
in the Volume of a Flat Magma Chamber

L. Sh. Bazarov, V. I. Gordeeva, V. S. Shevchenko, and E. I. Petrushin p. 821  abstract

Permian and Triassic Rocks in the Southeastern Central Pamirs
(Southern Watershed Area of the Muzkol Range)

V. I. Dronov p. 824  abstract


Part 2. Geochemistry, Geophysics, Oceanology, Geography

A Method for Determining Nonlinear Elastic Constants of Rocks

K. S. Aleksandrov, G. T. Prodaivoda, and B. P. Maslov p. 827  abstract

Genetic Typification of the Gumeshevsk Skarn Copper Deposit, Middle Urals

A. I. Grabezhev, V. I. Sotnikov, A. A. Borovikov, and O. B. Azovskova p. 830  abstract

Isotopic Signatures of Kimberlites in the Kurkhan Diamondiferous Diatreme, Primor’e Region

V. G. Sakhno, A. P. Matyunin, and V. G. Moiseenko p. 833  abstract

The Source of Tectonic Earthquake: A Block Hierarchical Structure

O. K. Kedrov p. 837  abstract

The Generation of Modes with a Period of 120–130 h by Earthquake in the Geomagnetic Field

A. P. Naumov and O. A. Titov p. 839  abstract

The Cyclonic Hazard Zone and Its Zoning: Implications
for the System of Cyclonic Risk Estimation

M. I. Yaroshevich and V. N. Yakhryushin p. 843  abstract

Stages of Magmatic Activity in the Elbrus Volcanic Center (Greater Caucasus):
Evidence from Isotope-Geochronological Data

I. V. Chernyshev, V. A. Lebedev, S. N. Bubnov, M. M. Arakelyants, and Yu. V. Gol’tsman p. 848  abstract

A Method for Seismological Calibration of the International Monitoring System
Using Regional Discriminants

O. K. Kedrov p. 853  abstract

Low-Density Anomalies in the Mantle: Ascending Plumes
and/or Heated Fossil Lithospheric Plates?

S. O. Balyshev and A. V. Ivanov p. 858  abstract

Physicochemical Modeling of the Co and Hg Behavior at the River–Sea Geochemical Barrier

L. M. Gramm-Osipov, A. V. Savchenko, and V. N. Gramm-Osipova p. 863  abstract

Natural Hydrocarbon Gas: a Possible Reason for Soda Discharge
from Alkaline Rocks of the Khibiny Massif

O. B. Dudkin and S. I. Mazukhina p. 867  abstract

Zirconology of Metamorphic Rocks in the Il’ino Complex, Southern Urals

A. A. Krasnobaev, N. V. Cherednichenko, B. A. Puzhakov, and V. A. Chashchukhina p. 870  abstract

Rhyodacite Porphyry Pluton in the Early Proterozoic Pechenga Complex:
Evidence from the Kola Superdeep Borehole Section

F. P. Mitrofanov, P. K. Skuf’in, T. B. Bayanova, Yu. P. Smirnov, and N. V. Levkovich p. 875  abstract


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