Выполаживание уступа неогеновой надпойменной террасы р. Лены в голоцене

Аннотация

Comparative analysis of three sections of fluvial sandy terrace at Central Yakutia revealed changes in the slope's structure during the Holocene. At the east-facing slope the defluction is the prevailing process; the slope inclination decreased from 42 to 28^o, a 10-5^o deluvial apron being formed at the slope base. At the north-facing slope defluction goes with cryosolifluction; at first the upper part of the slope was flattened (to 28^o), and then retreated as the lower part decreased in steepness to 15^o and deluvial-solifluctional apron was formed (the latter being 9 to 3-4^o steep).