Late Cenozoic Stratigraphy and Paleoceanology of the Barents Sea

Zarkhidze, V. S.; Samoilovich, Yu. G.

doi:10.1007/978-1-4613-0677-1_25

Cited by 8 publications

(5 citation statements)

References 1 publication

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“…Although our study has revealed a mollusc fauna with Cyrtodaria angusta at one locality, the heavily glacier-tectonized coastal cliff at northern Kanin Peninsula , the stratigraphical setting of the marine Eemian sediments preclude confusion with these much older and deeper marine sediments. We therefore conclude with Zharkidze & Samoilovich (1989) that faunas similar to the Eemian are not known from any other mid to late Quaternary sites in northern Russia, and thus that the Eemian sediments form an important marker in the local stratigraphy.…”

Section: Marine Marker Bedsmentioning

confidence: 59%

Late Pleistocene glacial and lake history of northwestern Russia

Larsen¹,

Kjær

Demidov

et al. 2006

Boreas

135

179

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Five regionally significant Weichselian glacial events, each separated by terrestrial and marine interstadial conditions, are described from northwestern Russia. The first glacial event took place in the Early Weichselian. An ice sheet centred in the Kara Sea area dammed up a large lake in the Pechora lowland. Water was discharged across a threshold on the Timan Ridge and via an ice‐free corridor between the Scandinavian Ice Sheet and the Kara Sea Ice Sheet to the west and north into the Barents Sea. The next glaciation occurred around 75–70 kyr BP after an interstadial episode that lasted c. 15 kyr. A local ice cap developed over the Timan Ridge at the transition to the Middle Weichselian. Shortly after deglaciation of the Timan ice cap, an ice sheet centred in the Barents Sea reached the area. The configuration of this ice sheet suggests that it was confluent with the Scandinavian Ice Sheet. Consequently, around 70–65 kyr BP a huge ice‐dammed lake formed in the White Sea basin (the ‘White Sea Lake’), only now the outlet across the Timan Ridge discharged water eastward into the Pechora area. The Barents Sea Ice Sheet likely suffered marine down‐draw that led to its rapid collapse. The White Sea Lake drained into the Barents Sea, and marine inundation and interstadial conditions followed between 65 and 55 kyr BP. The glaciation that followed was centred in the Kara Sea area around 55–45 kyr BP. Northward directed fluvial runoff in the Arkhangelsk region indicates that the Kara Sea Ice Sheet was independent of the Scandinavian Ice Sheet and that the Barents Sea remained ice free. This glaciation was succeeded by a c. 20‐kyr‐long ice‐free and periglacial period before the Scandinavian Ice Sheet invaded from the west, and joined with the Barents Sea Ice Sheet in the northernmost areas of northwestern Russia. The study area seems to be the only region that was invaded by all three ice sheets during the Weichselian. A general increase in ice‐sheet size and the westwards migrating ice‐sheet dominance with time was reversed in Middle Weichselian time to an easterly dominated ice‐sheet configuration. This sequence of events resulted in a complex lake history with spillways being re‐used and ice‐dammed lakes appearing at different places along the ice margins at different times.

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Section: Marine Marker Bedsmentioning

confidence: 59%

Late Pleistocene glacial and lake history of northwestern Russia

Larsen¹,

Kjær

Demidov

et al. 2006

Boreas

135

179

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“…Early to Middle Pliocene shelf deposits are known from the European part of Russia (Zarkhidze & Samoilovich 1989; Yakhimovich et al 1990), and the Kolvinsk interval is dated to the Gilbert and Gauss chrons (Yakhimovich et al 1990). The mollusc fauna from Store Koldewey is comparable to faunas from these deposits (cf.…”

Section: Correlationsmentioning

confidence: 99%

Early Pleistocene sediments on Store Koldewey, northeast Greenland

Bennike¹,

Knudsen²,

Abrahamsen³

et al. 2010

Boreas

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Marine Quaternary deposits, here named the Store Koldewey Formation, are found at $120 m above sea level in northeast Greenland (761N). The sequence is referred to the Olduvai normal polarity subchron at 1.95-1.78 Ma BP based on palaeomagnetic studies (palaeomagnetically reversed), amino acid epimerization ratios and evidence from marine and non-marine fossils. The sediments and the fauna show that the sequence was deposited on a mid or inner shelf, and some elements of the marine mollusc and foraminiferal assemblages indicate water temperatures between À1 and 111C and seasonal sea ice cover during deposition. Mean summer air temperatures were around 61C higher than at present, as demonstrated by the occurrence of southern extralimital terrestrial species. Wellpreserved remains of land plants indicate that the adjacent land area was dominated by sub-arctic forest-tundra with the trees Larix and Betula, shrubs, herbs and mosses. Most of the species represented as fossils have recent circumpolar geographical ranges. An extinct brachiopod species and an extinct gastropod species have been found, but the other macrofossils are referred to extant species. The brachiopod is erected as a new genus and species, Laugekochiana groenlandica.

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“…All macrofossil species have previously been found in undisturbed marine deposits in the Arkhangelsk Region from the 'Boreal Transgression' that took place in the Mikulinian (Eemian) interglacial (Devyatova and Loseva, 1964;Biske and Devyatova, 1965;Devyatova, 1982;Funder et al, 2002). The Mikulinian palaeofauna is distinguished by its boreal species, which generally are not known from any other Late Cenozoic marine deposits in northern Russia (Zharkidze and Samoilovich, 1989). It is noteworthy that the boreal Astarte sulcata, Cerastoderma edule, Panomya norvegica and Spisula elliptica are reworked into unit 1 at Cape Tolstik (Fig.…”

Section: Correlations and Chronologymentioning

confidence: 99%

Mezen Bay—a key area for understanding Weichselian glaciations in northern Russia

Kjær

Demidov

Larsen

et al. 2003

J Quaternary Science

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Sediment successions in coastal cliffs around Mezen Bay, southeastern White Sea, record an unusually detailed history of former glaciations, interstadial marine and fluvial events from the Weichselian. A regional glaciation model for the Weichselian is based on new data from the Mezen Bay area and previously published data from adjacent areas. Following the Mikulinian (Eemian) interglacial a shelf-centred glaciation in the Kara Sea is reflected in proglacial conditions at 100-90 ka. A local ice-cap over the Timan ridge existed between 75 and 65 ka. Renewed glaciation in the Kara Sea spread southwestwards around 60 ka only, interrupted by a marine inundation, before it advanced to its maximum position at about 55-50 ka. After a prolonged ice-free period, the Scandinavian ice-sheet invaded the area from the west and terminated east of Mezen Bay about 17 ka. The previously published evidence of a large ice-dammed lake in the central Arkhangelsk region, Lake Komi, finds no support in this study.

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Late Cenozoic Stratigraphy and Paleoceanology of the Barents Sea

Cited by 8 publications

References 1 publication

Late Pleistocene glacial and lake history of northwestern Russia

Late Pleistocene glacial and lake history of northwestern Russia

Early Pleistocene sediments on Store Koldewey, northeast Greenland

Mezen Bay—a key area for understanding Weichselian glaciations in northern Russia

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