GEOLOGIYA I GEOFIZIKA, 2000, V 41, N 8, Aug.

PETROLOGY, GEOCHEMISTRY, AND MINERALOGY

Bognibov V.I., Izokh A.E., Polyakov G.V., Gibsher A.S., and
Mekhonoshin A.S.
Composition and geodynamic settings of formation of 
titanium-bearing ultrabasic-basic massifs in
the Central-Asian fold belt  
1083

Balykin P.A. and Petrova T.E. 
Petrological types and genesis of komatiite-basalt, 
picrite-basalt, and picrite-dolerite complexes  
1098

Sotnikov V.I., Ponomarchuk V.A., Berzina A.N., Berzina A.P.,
Kiseleva V.Yu., and Morozova I.P. 
Evolution of 87Sr/86Sr in erupted rocks of porphyry copper-molybdenum
ore clusters(based on studies of accessory apatite)  
1112

Tauson V.L., Men'shikov V.I., and Parkhomenko I.Yu.
Determination of lead species in minerals by thermal
atomic-absorption spectrometry  
1124

GEOLOGY AND GEOCHEMISTRY OF OIL AND GAS

Shemin G.G., Beizel' A.L., Levchuk M.A., Shurygin B.N.,
Balashov V.V., Brekhuntsov A.M., Bochkarev V.S., and Deshchenya N.P. 
Detailed correlation of Callovian and Upper Jurassic petroliferous
deposits in the north of West Siberia  
1131

Neruchev S.G., Moiseeva O.B., Klimova L.I., and Smirnov S.V.
Simulation of petroleum migration and accumulation in traps
1145

Ginsburg G.D., Novozhilov A.A., Duchkov A.D., Prasolov E.M.,
Zavarzin I.V., and Collett T.S. 
Do natural gas hydrates exist in Cenomanian strata of the 
Messoyakhskoe gas deposit?  
1165

Zhidkova L.V. 
A model for the evolution of the elemental
composition of kerogen under various thermal conditions 
1178

Goryainov I.N., Gramberg I.S., Smekalov A.S., and Goryainov K.I. 
Possible dependence of the global increase in
methane concentration in the troposphere on the number of
small earthquakes
1187

STRATIGRAPHY

Il'ina V.I. and Shurygin B.N. The Ilansk Formation and its
stratotype (Lower Jurassic, southern Siberia)  
1195

GEOPHYSICS

Filatov V.V., Poletaeva N.G., and Nigmatullin R.R. Effects
of induced polarization in fractal media 
1203

Bushenkova N.A., Tychkov S.A., and Kulakov I.Yu. Lateral
inhomogeneities of the upper mantle beneath southern Siberia
and eastern Kazakhstan, from PP-, SS-, P- and S-wave data  
1217