Changes of the morphology of fossil valleys and terrace placers due to the burial processes

Abstract

The paper discusses regular features and the mechanism of transformations of valley diamond placers in the process of their burial under alluvium under conditions of rhythmical ingressions and erosion within the valleys at the marginal parts of the Tungus and Vilyui syneclises. The necessity is shown to study both buried landform morphology and the structure of covering series, the data thus ontained provide the basis for paleogeographical (and first of all paleogeomorphological and paleohydrological) reconstructions, they indicate directions for further searches. The authors attribute a considerable importance to paleohydrogical regime as a factor which controls the landforms development, transformation and destruction in the process of the placers formation.