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  • Age, 14C AMS; Age, dated; Age, dated material; Age, dated standard deviation; Age, maximum/old; Age, minimum/young; Chelmokhta; ELEVATION; Event label; Latitude of event; Longitude of event; OUTCROP; Outcrop sample; Psaryovo; Quaternary Environment of the Eurasian North; QUEEN; QUEEN_Exped; Raibola; Sample, optional label/labor no; Sample code/label; Trepyzovo; δ13C, organic carbon  (1)
  • Age, dated; Age, dated standard deviation; Age, optical stimulated luminescence (OSL); Dose rate; Dose rate, standard deviation; ELEVATION; Equivalent dose; LATITUDE; Lithologic unit/sequence; Lithology/composition/facies; LONGITUDE; Number; Quaternary Environment of the Eurasian North; QUEEN; Replicates; Sample code/label; Sample code/label 2; Water content, wet mass  (1)
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  • 1
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    Unbekannt
    PANGAEA
    In:  Supplement to: Houmark-Nielsen, Michael; Demidov, Igor; Funder, Svend; Grøsfjeld, Kari; Kjær, Kurt Henrik; Larsen, Eiliv; Lavrova, Nadya; Lyså, Astrid; Nielsen, Jan K (2001): Early and Middle Valdaian glaciations, ice-dammed lakes and periglacial interstadials in northwest Russia: new evidence from the Pyoza River area. Global and Planetary Change, 31(1-4), 215-237, https://doi.org/10.1016/S0921-8181(01)00121-7
    Publikationsdatum: 2023-05-12
    Beschreibung: The Pyoza River area in the Arkhangelsk district exposes sedimentary sequences suitable for study of the interaction between consecutive Valdaian ice sheets in Northern Russia. Lithostratigraphic investigations combined with luminescence dating have revealed new evidence on the Late Pleistocene history of the area. Overlying glacigenic deposits of the Moscowian (Saalian) glaciation marine deposits previously confined to three separate transgression phases have all been connected to the Mikulinian (Eemian) interglacial. Early Valdaian (E. Weichselian) proglacial, lacustrine and fluvial deposits indicate glaciation to the east or north and consequently glacier damming and meltwater run-off in the Pyoza area around 90-110 ka BP. Interstadial conditions with forest-steppe tundra vegetation and lacustrine and fluvial deposition prevailed at the end of the Early Valdaian around 75-95 ka BP. A terrestrial-based glaciation from easterly uplands reached the Pyoza area at the Early to Middle Valdaian transition around 65-75 ka BP and deposited glaciofluvial strata and subglacial till (Yolkino Till). During deglaciation, laterally extensive glaciolacustrine sediments were deposited in ice-dammed lakes in the early Middle Valdaian around 55-75 ka BP. The Barents–Kara Sea ice sheet deposited the Viryuga Till on the lower Pyoza from northerly directions. The ice sheet formed the Pyoza marginal moraines, which can be correlated with the Markhida moraines further east, and proglacial lacustrine deposition persisted in the area during the first part of the Middle Valdaian. Glacio-isostatic uplift caused erosion followed by pedogenesis and the formation of a deflation horizon in the Middle Valdaian. Widely dispersed periglacial river plains were formed during the Late Valdaian around 10-20 ka BP. Thus, the evidence of a terrestrial-based ice sheet from easterly uplands in the Pyoza area suggests that local piedmont glaciers situated in highlands such as the Timan Ridge or the Urals could have developed into larger, regionally confined ice sheets. Two phases of ice damming and development of proglacial lakes occurred during the Early and Middle Valdaian. The region did not experience glaciation during the Late Valdaian.
    Schlagwort(e): Age, dated; Age, dated standard deviation; Age, optical stimulated luminescence (OSL); Dose rate; Dose rate, standard deviation; ELEVATION; Equivalent dose; LATITUDE; Lithologic unit/sequence; Lithology/composition/facies; LONGITUDE; Number; Quaternary Environment of the Eurasian North; QUEEN; Replicates; Sample code/label; Sample code/label 2; Water content, wet mass
    Materialart: Dataset
    Format: text/tab-separated-values, 528 data points
    Standort Signatur Einschränkungen Verfügbarkeit
    BibTip Andere fanden auch interessant ...
  • 2
    Publikationsdatum: 2023-05-12
    Schlagwort(e): Age, 14C AMS; Age, dated; Age, dated material; Age, dated standard deviation; Age, maximum/old; Age, minimum/young; Chelmokhta; ELEVATION; Event label; Latitude of event; Longitude of event; OUTCROP; Outcrop sample; Psaryovo; Quaternary Environment of the Eurasian North; QUEEN; QUEEN_Exped; Raibola; Sample, optional label/labor no; Sample code/label; Trepyzovo; δ13C, organic carbon
    Materialart: Dataset
    Format: text/tab-separated-values, 59 data points
    Standort Signatur Einschränkungen Verfügbarkeit
    BibTip Andere fanden auch interessant ...
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