GEOLOGY AND GEOPHYSICS , 2003, V 44, N 4, April.

GEOPHYSICS 
History of multiwave seismic exploration in Russia. 
N.N. Puzyrev
277  

Simulation of stresses in the heating lithosphere
of the Baikal Rift at the onset of rifting. 
A.N. Adamovich, S.I. Sherman, and S.V. Ivanova
286

PETROLOGY, GEOCHEMISTRY, AND MINERALOGY 

Metamorphic zoning of the Tongulak mountain range, Altai: mathematical modeling. 
V.A. Anan’ev, O.P. Polyansky, G.G. Lepezin, and V.V. Reverdatto  
297

Mineral reactions in high-alumina ferriferous metapelitic hornfelses: the problem of stability 
of rare parageneses of contact metamorphism. 
I.I. Likhanov 
305

A magmatic episode in the Western rift of East Africa (19–17 Ma).
S.V. Rasskazov,  N.A. Logachev, A.V. Ivanov, A.A. Boven, M.N. Maslovskaya, E.V. Saranina, 
I.S. Brandt, and S.B. Brandt  
317

Geology, chemistry, and genesis of Ba-Sr-bearing (“benstonite”) carbonatites of the Murun 
Massif. 
N.V. Vladykin and I.I. Tsaruk
325 

Deposits of precious opal: genesis and search criteria. 
D.V. Kalinin and V.V. Serdobintseva
340.

STRATIGRAPHY AND PALEONTOLOGY 

Microphytofossils and magnetostratigraphy of Upper Cretaceous and Cenozoic deposits of 
the southeastern West Siberian Plain. 
O.B. Kuz’mina, V.S. Volkova,  Z.N. Gnibidenko, and N.K. Lebedeva
348

The Pleistocene subaerial sequence and environmental history of West Siberia. 
I.A. Volkov
364

TECTONICS 

Holocene deformation in the western end of the Tunka system of rift basins (Southwestern 
Baikal Rift). 
A.V. Arzhannikova, C. Larroque, and S.G. Arzhannikov 
373

BRIEF COMMUNICATIONS 

Late Holocene vegetation and climate in the East Sayan mountains. 
E.V. Bezrukova,  K.E. Vershinin, L.A. Orlova, P.P. Letunova, S.M. Krapivina, V.V. Chepinoga, 
A.V. Verkhozina, N.V. Dudareva, and A.A. Abzaeva 
380