Late and Middle Weichselian stratigraphy of Andøya, north Norway

Vorren, Karl‐Dag

doi:10.1111/j.1502-3885.1978.tb00047.x

Cited by 101 publications

(165 citation statements)

References 15 publications

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“…The decrease in GDD above 5 °C per day (GDD 5 < 350) is sufficient to explain tundra at 18,000 14 C yr bp in Norway at the Atlantic coast, where birch woodland grows today (Vorren, 1978). However, the establishment of tundra in the inner part of northern Eurasia probably requires drier conditions (α < 0.65) than today.…”

Section: Discussionmentioning

confidence: 99%

Last glacial maximum biomes reconstructed from pollen and plant macrofossil data from northern Eurasia

Tarasov

Volkova

Webb

et al. 2000

Journal of Biogeography

290

233

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Section: Discussionmentioning

confidence: 99%

Last glacial maximum biomes reconstructed from pollen and plant macrofossil data from northern Eurasia

Tarasov

Volkova

Webb

et al. 2000

Journal of Biogeography

290

233

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“…plants require a minimum mean summer temperature to flower and reproduce. Palaeotemperature data were obtained from Iversen (1954), Kolstrup and Wijmstra (1977), Vorren (1978), Kolstrup (1979Kolstrup ( , 1980, Brinkkemper et al (1987), Ran (1990), Litt (1994), Isarin and Bohncke (1998) and Hoffmann et al (1998) (Table 2). …”

Section: Methodsmentioning

confidence: 99%

Vegetation and climate during the Weichselian Early Glacial and Pleniglacial in the Niederlausitz, eastern Germany — macrofossil and pollen evidence

Bos¹,

Bohncke²,

Kasse³

et al. 2001

J Quaternary Science

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Cryoturbated organic beds and channel fills, intercalated with sandy and gravelly fluvial units, have been studied in an opencast brown-coal mine near Nochten (Niederlausitz), eastern Germany. The fluvial-aeolian sequence covers parts of the Early, Pleni-and Late-glacial. The detailed chronology is based on 11 radiocarbon and 12 OSL dates, covering the period between ca. 100 kyr and 11 kyr BP. Basal peat deposits are correlated with an Early Weichselian interstadial. During this period boreal forests were present and minimum mean summer temperatures were Ͼ 13°C. Early Pleniglacial deposits are absent. The Middle and Late Pleniglacial environments were treeless and different types of tundra vegetation can be recognised. Minimum mean summer temperatures varied between 10 and 15°C. Vegetation and climate is reconstructed in detail for the periods around 34-38 kyr BP and 24-25 kyr BP. Around 34-38 ka, a mixture between a low shrub tundra and a cottongrass tussock-subshrub tundra was present. The botanical and sedimentological data suggest that from the Middle to the Late Pleniglacial, the climate became more continental, aridity and wind strength increased, and the role of a protecting winter snow cover decreased. A sedge-grass-moss tundra dominated around 24 and 25 kyr BP.

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“…Saxifraga oppositifolia Vorren, 1978 7 Selaginella selaginoides Kolstrup, 1979Kolstrup, , 1980 Parnassia palustris Kolstrup, 1979Kolstrup, , 1980 Betula nana Brinkkemper et al, 1987;Ran, 1990 7.3 Lycopodium alpinum/annotinum Vorren, 19787.4 Papaver Vorren, 1978 Sagina caespitosa Vorren, 19787.7 Empetrum Vorren, 1978 Thalictrum alpinum Vorren, 1978 8 Potamogeton ¢liformis Kolstrup, 1979Kolstrup, , 1980 Caltha palustris Kolstrup, 1980 8 Cornus suecica Kolstrup, 1980 8 Ranunculus hyperboreus Brinkkemper et al, 1987 8 Astragalus alpinus Vorren, 1978 8 Juniperus communis Iversen, 1954; Isarin and Bohncke, 1999 10 (taller plants) Kolstrup, 1980 9.1 Koenigia islandica Vorren, 1978 9^10 Myriophyllum alterni£orum Kolstrup, 1980;Isarin and Bohncke, 1999 9^10 Sanguisorba o⁄cinalis Kolstrup, 1979Kolstrup, , 1980 10 Aulacomnium turgidum Odgaard, 1982 10 Ranunculus subgen. Batrachium Brinkkemper et al, 1987 10 Myriophyllum spicatum Kolstrup, 1980 13 Schoenoplectus lacustris/tabernaemontani Iversen, 1954 16 Groenlandia densa Bell, 1970 7.2.…”

Section: 7mentioning

confidence: 99%

“…In this method the relationship between the geographical limit of plant distribution and temperature is used, i.e., plants require a minimum mean summer temperature to £ower and reproduce. Palaeotemperature data (Table 4) were obtained from Dahl (1951), Iversen (1954), Bell (1970), Vorren (1978), Kolstrup (1979Kolstrup ( , 1980, Odgaard (1982), Brinkkemper et al (1987) and Isarin and Bohncke (1999). Layer 1: The botanical assemblage in the basal part of the microfossil diagram from Location 2, site 1 (PAZ SO-1, 29^34 cm; Figs.…”

Section: Local Environment Interpreted From Other Invertebrate Groupsmentioning

confidence: 99%

Flora, fauna and climate of Scotland during the Weichselian Middle Pleniglacial – palynological, macrofossil and coleopteran investigations

Bos

Dickson

Coope

et al. 2004

Palaeogeography, Palaeoclimatology, Palaeoecology

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Thin lenses of organic-rich material, on the upper surface of a layer of glacio-fluvial deposits have been studied in an open cast coal-mine near Sourlie, western Scotland. Radiocarbon dates on antler fragments, plant debris and bulk organic matter from silt, showed that the sediments accumulated between ca. 33 500 and 29 000 14 C yr BP, during a period when this part of western Scotland was free of glaciers. The organic-rich sediments yielded a very rich flora and fauna and in total about 160 plant taxa and 61 coleopteran taxa were recorded together with other invertebrates. The Sourlie flora is one of the richest late Middle Weichselian floras yet studied within the British Isles. Leg bones of Coelodonta antiquitatis (woolly rhinoceros) and Rangifer tarandus (reindeer) were also found at the site. During this period, the landscape was treeless and the vegetation could be characterised as an intermediate between a low shrub tundra and sedge^grass^moss tundra. Both the flora and arthropod fauna suggest that during formation of the organic-rich layers at Sourlie, mean July temperatures were 9^10 ‡C. The flora suggests also that at the beginning of formation of these layers, minimum mean July temperatures increased from 7 to 9^10 ‡C, but later dropped again to 7^8 ‡C. A possible time correlation with one of the warmer periods of the Dansgaard^Oeschger cycles in the stable oxygen isotope record of the Greenland ice cores during this period is proposed. The arthropod fauna suggests that mean January temperatures were somewhere between 334 and 311 ‡C. Mean annual temperatures lay probably between 31 and 310 ‡C, which implies the possible presence of discontinuous or continuous permafrost in the area. During winter, a protective snow cover of varying thickness probably enabled perennial plants, especially shrubs, to survive. ß

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Late and Middle Weichselian stratigraphy of Andøya, north Norway

Cited by 101 publications

References 15 publications

Last glacial maximum biomes reconstructed from pollen and plant macrofossil data from northern Eurasia

Last glacial maximum biomes reconstructed from pollen and plant macrofossil data from northern Eurasia

Vegetation and climate during the Weichselian Early Glacial and Pleniglacial in the Niederlausitz, eastern Germany — macrofossil and pollen evidence

Flora, fauna and climate of Scotland during the Weichselian Middle Pleniglacial – palynological, macrofossil and coleopteran investigations

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