Lithological composition of neopleistocene alluvium on the east of the european subarctic of Russia

Abstract

Àðêòè÷åñêèé âåêòîð ãåîëîãè÷åñêèõ èññëåäîâàíèé Àðêòè÷åñêèé âåêòîð ãåîëîãè÷åñêèõ èññëåäîâàíèé Arctic vector of geological research Arctic vector of geological research

New Data on Paleogeography of Quaternary Coast Sediments of the Rivers of the European North of Russia Using Isotope-Geochemical Methods

“…In [58], an attempt was made to create a high-quality 3D outcrop model using a drone. The thickness of the sands has an extremely uneven thickness-from 15 to 55 m and more [39] (Figure 6).…”

“…Comprehensive studies of moraine horizons in coastal outcrops made it possible to correlate them in the extreme northeast of the European Subarctic of Russia [39] (according to Figure 2).…”

“…The identified three horizons of moraines differ in lithological features. Reliable and regionally consistent lithological correlatives are the orientation of elongated rock fragments and the presence of guide boulders [39].…”

“…The chemical composition of coarse-grained sediments, silts, and clays, which were once saturated with salty sea water, influences the formation of the present-day composition of lake waters in the region [34]. Loose Quaternary sediments are represented by deposits of the Middle and Late Pleistocene age-marine, river, lacustrine, eluvial, and colluvial accumulations [35][36][37][38][39]. Quaternary deposits are diverse both in origin and lithological composition, and their thickness increases to the north [40].…”