Величина денудационного среза Алдано-Станового региона за меозойско-кайнозоиское время

Аннотация

Value of the denudation (i. e. mean thickness of rock layer removed by denudation) is defined for different stages of the topographic evolution of the Aldan-Stanovoi region on the basis of analysis of the relief history. Danudation values for Jurassic and Cretaceous stages were obtained using bulk method and amounted to 400 and 300 meters respectively. Variations of the denudation rate are taken into account. For Cretaceous - Paleogene and Neogene-Quaternary stages mean denudation values of 100 to 150 and 50 meters were obtained with considerable variations in different geomorphological structures for the last stage. For Mesozoic - Cenozoic time in the Aldan-Stanovoi region mean denudation value is 1000 meters, maximum value being more than 2000 meters in lonascending blocks, minimum - 100 to 150 meters is blocks of inherited downwarping.