In the development of geomorphology four main stages may be distinguished: the initial one (up to the 90^th of the XIX century), the classical one (from the 90^th to the 40^th of the XX century), the stage of theoretical differentiation (the 40^th - the 80^th) and current one. Classical period relates to works of W. Davis and W. Penk and their followers. Theoretical differentiation appeared due to detailed and fundamental investigations in the different fields of classical theories. The main tendencies of current development of geomorphology in the growing interest in dynamic and ecological aspects.

Classification of active (Pacific), passive (Atlantic), Columbian and Mediterranean types of continental margins is suggested. Regional description of transition zones is given. Each type of continental margin is characterizes by specific geomorphic and morphostructural features, values of seismicity (magnitudes), types of magmatic rocks, age of folded basement and sedimentary cover and some other geological parameters.

The joining regions of morphotectonic blobs of Lesser Caucasus are characterized by high geodynamics and by intensive exogenous processes. Their space images were deciphered, the methodic and results are described.

The El'gigitgin depression consists of two structures of different age: a large Miocene-Early Pliocene structure (El'gigitgin-1) and inner one of Late-Pliocene-Pleistocene age (El'gigitgin-2) - the El'gigitgin lake. New data on lake's bottom morphology were obtained by echo sounding in 1994. The age of structures was determined on the base of palynologic data. The analysis of impactite distribution in the depression and in the Pliocene sediments of river Enmivaam was used as well. The comparison of the depression with the ring structures at the shields and ancient platforms was made. The development of El'gigitgin depression was attended by endogenous impactogenesys.

The position, size and morphology of massive Slorung - the summit of the cordillera of Miocene sea-was reconstructed on the base of correlative deposits (Miocene conglomerates) analysis.

Analysis of the geology-geomorphologic data allowed us to create a model of coasal-shelf cryolithosphere evolution in the Eastern Arctic Shelf of Eurasia (the Eastern Siberian Sea as an example) during the last 80000 years. This epoch includes two large cryochrons corresponding to the Zyryan and Satan regressions, and two thermochrons corresponding to the Karga and Holocene transgressions.

Classical karst bauxiteferuos region in the Western Turgai is under consideration. Upper Cretaceous bauxiteferuos rocks fill numerous karst depressions of different morphology: wells, sink holes (cones), caldrons - corrosion-collapse, corrosion-suffusion, corrosion-erosion. The development of these landforms has gone through several stages. Depressions, which were formed during two or more tectonic-denudation cycles, are most rich of ore. Those, which underwent only one cycle, are more uniform and their ore reserves are lower.

The watersheds of different range within the Fore-Altai Plain (low-mountain ridges, ouvals, flat interfluves) are characterized. Morphogenetic sequence of their development is revealed. Kamensko-Charyshsky flat interfluve is distinguished as an important geomorphologic element. It is partial plain watershed of Upper Ob' and Irtysh basins.

In the vicinity of city Naberezhnye Chelny the valley of the Kama river has two levels of the Hood plain and six terraces. The description of these terraces is given: their morphology, morphometry and age. The oldest, sixth terrace is dated Eopleistocene. The age of youngest one is Late Pleistocene - Holocene.

Tunkin rift is the western flank of Baikal rift zone. lt is represented by intermountain depressions and low- mountainous horst ridges between them. Depressions have Pliocene-Quaternary sediment filling rich of volcanic material. Northern boundary of the rift is Tunldn normal fault, which appears on the surface as high bench. The horst ridges are located in the places where this fault changes its direction from N-E to sublatitudinal and conversely.

The socle of Mongol-Siberian belt is characterized by submeridional upheaval in this area. and Tunkin rift is located on the eastern slope of it. The upheaval is the morphological effect of vertical channel in the astenosphere. This position of rift forces the lithosphere blocks to move eastward, which in turn determines the structural features of Tunkin rift and lateral compression in the foci of the eartquakes.

On the "moraines" of Great Balk fan ridge 

Geomorphic consequences of changes in the land-use: international symposium in Slovakia 

A new findings in the fluvial relief investigations

Alexander Petrovich Rozhdestvensky (to the 80th birthday)

On the glacial theory and its foundations - a reply to criticism

To the memory of remarkable Russian geomorphologist M.V. Piotrovsky

Konstantin Sergeyevitch Voskresensky (1951-2000)