Террасовые ряды в речных долинах Верхнеколымского нагорья

Аннотация

Some data are given on relative position of alluvial members in river valleys crossection at the upper Kolyma drainage basin. The lower terrasouval (0 to 70 meters high above the river channel) comprises Pleistocene alluvial members, those dated from Early Pleistocene (two of them) and from late Middle Pleistocene are buried. The Middle Pleistocene alluvium lays in the deepest part of the valley's crossection, its base being a few meters below the recent floodplain alluvium bed. An intricate structure of terrace series is concluded from the data analysis, the series are incomplete not only due to poor conservation but to the fact 3 (out of 7) alluvial members being buried and not pronounced in recent valley topography.