Timing and Sedimentary Record of Late Quaternary Fluvio-Aeolian Successions of the Tura-Pyshma Interfluve (SW Western Siberia, Russia)

Abstract

The sedimentary record of aeolian deposits and geomorphic features of the aeolian landforms of Northern Eurasia contain important information that allows us to better understand the climate and environments of the Late Glacial and Early Holocene periods. At the same time, the degree of scientific knowledge about the timing of aeolian activity, as well as the landscapes that existed during these periods, differs significantly for different parts of this vast territory. Data on the sedimentological record and age estimations of aeolian phases are practically absent for the periglacial zone of Western Siberia, in contrast to that of Europe. This paper presents the first data on the Late Quaternary fluvio-aeolian environments of the southwestern part of Western Siberia, using two sections as examples. Our methods included field investigations, analysis of grain-size and chemical composition, quartz grain morphoscopy and infrared optically stimulated luminescence (IR-OSL) and AMS dating. The obtained results show that aeolian sands are common covering deposits within the study area. Two stages of aeolian activity were identified: the first during the Boreal period (9.2–10.2 ka BP), and the second during the Atlantic period, beginning near 7 ka BP.

Stratigraphic Framework, Paleoenvironments, and Indigenous Terraforming of Inshore Estuarine Subbasins in Tampa Bay, Florida, U.S.A.

“…Mud content is >10% and gravel content is <4% (Figure 6f). Bed thickness varies from 1 to 2 m, with elevations ranging from –2 to –5 m. The stratigraphic position of muddy fine-sand deposits at UTB suggests an association with the deglacial period and reworking of fine, well-sorted quartz sand within fluvial or lacustrine environments (Bertran et al ., 2011; Sizov et al ., 2020).…”

Geochemistry of street dust in Tyumen, Russia: influence of traffic load

“…The compositions of major elements in road dust of Tyumen are shown in Fig.3. For comparison, the composition of Quaternary deposits (aeolian sand) in the vicinity of Tyumen is presented in accordance with(Sizov et al 2020). The composition of road dust is dominated by MgO (on average 12.9%), CaO (7.7%) Al 2 O 3 and Fe 2 O 3 (5.2%).…”

Mineral Element Stocks in the Yedoma Domain: A Novel Method Applied to Ice-Rich Permafrost Regions

“…Current evidence indicates that depositional processes are polygenetic including alluvial and aeolian deposition and re-deposition, as well as in situ weathering during the late Pleistocene cold stages (Konishchev and Rogov, 1993;Schirrmeister et al, 2013). Despite evidence of homogeneity of Yedoma deposit aggradation, grain-size analyses show the large diversity of Yedoma deposits, pointing at multiple origins and transport pathways of sediments as well as a diverse interplay of (post)depositional sedimentary processes (Strauss et al, 2012;Schirrmeister et al, 2020;Sizov et al, 2020). For tens of millennia, continuous sedimentation led to the accumulation of several tens of meters thick permafrost deposits with characteristic syngenetic ice-wedge formation.…”