Pollen record and age determination of profile CS98-10 at Cape Shpindler, Yugorski Peninsula, northwest Russia


Autoria(s): Andreev, Andrei A; Manley, William F; Ingólfsson, Ólafur; Forman, Steven L
Cobertura

LATITUDE: 69.716670 * LONGITUDE: 62.800000

Data(s)

24/08/2001

Resumo

New pollen and radiocarbon data from an 8.6-m coastal section, Cape Shpindler (69°43' N; 62°48' E), Yugorski Peninsula, document the latest Pleistocene and Holocene environmental history of this low Arctic region. Twelve AMS 14C dates indicate that the deposits accumulated since about 13,000 until 2000 radiocarbon years BP. A thermokarst lake formed ca. 13,000-12,800 years BP, when scarce arctic tundra vegetation dominated the area. By 12,500 years BP, a shallow lake existed at the site, and Arctic tundra with Poaceae, Cyperaceae, Salix, Saxifraga, and Artemisia dominated nearby vegetation. Climate was colder than today. Betula nana became dominant during the Early Preboreal period about 9500 years BP, responding to a warm event, which was one of the warmest during the Holocene. Decline in B. nana and Salix after 9500 years BP reflects a brief event of Preboreal cooling. A subsequent increase in Betula and Alnus fruticosa pollen percentages reflects amelioration of environmental conditions at the end of Preboreal period (ca. 9300 years BP). A decline in arboreal taxa later, with a dramatic increase in herb taxa, reflects a short cold event at about 9200 years BP. The pollen data reflect a northward movement of tree birch, peaking at the middle Boreal period, around 8500 years BP. Open Betula forest existed on the Kara Sea coast of the Yugorski Peninsula during the Atlantic period (8000-4500 years BP), indicating that climate was significantly warmer than today. Deteriorating climate around the Atlantic-Subboreal boundary (ca. 4500 years BP) is recorded by a decline in Betula percentages. Sedimentation slowed at the site, and processes of denudation and/or soil formation started at the beginning of the Subatlantic period, when vegetation cover on Yugorski Peninsula shifted to near-modern assemblages.

Formato

application/zip, 2 datasets

Identificador

https://doi.pangaea.de/10.1594/PANGAEA.726734

doi:10.1594/PANGAEA.726734

Idioma(s)

en

Publicador

PANGAEA

Direitos

CC-BY: Creative Commons Attribution 3.0 Unported

Access constraints: unrestricted

Fonte

Supplement to: Andreev, Andrei A; Manley, William F; Ingólfsson, Ólafur; Forman, Steven L (2001): Environmental changes on Yugorski Peninsula, Kara Sea, Russia, during the last 12,800 radiocarbon years. Global and Planetary Change, 31(1-4), 255-264, doi:10.1016/S0921-8181(01)00123-0

Palavras-Chave #Abi; Abies; Age, 14C AMS; Age, dated; Age, dated material; Age, dated standard deviation; Age dated; Age std dev; Aln.f; Aln.sp; Alnus fruticosa; Alnus sp.; Apiaceae; Apiae; Art; Artemisia; Astae; Asteraceae; AWI_PerDyn; Bet.Se.A-T; Bet.Se.N-T; Betula sect. Albae-type; Betula sect. Nanae-type; Bot; Botrychium; Braae; Brassicaceae; Bryales; Bryes; Cape Shpindler, Yugorski Peninsula, Russia; Car; Carpinus; Caryophyllaceae; Cchae; Cheae; Chenopodiaceae; Cichoriaceae; Cor; Corylus; Counting, palynology; Cphae; CS98-10; Cypae; Cyperaceae; Dated material; Depth; DEPTH, sediment/rock; Enc; Encalypta; Equ; Equisetum; Ericales; Erl; Fabaceae; Fabae; Geological profile sampling; GEOPRO; Ger; Geranium; Hup.s-T; Huperzia selago-type; Jug; Juglans; Lab no; Lamae; Lamiaceae; Lar; Larix; Lilae; Liliaceae; Lyc.a-T; Lyc.c; Lycopodium annotinum-type; Lycopodium clavatum; Lycopodium sp.; Myo; Myriophyllum; Onaae; Onagraceae; Pdi; Pediastrum; Periglacial Dynamics @ AWI; Pic; Picea; Pinaceae; Pinae; Pinus s/g Diplo; Pinus s/g Haplo; Pinus subgen. Diploxylon; Pinus subgen. Haploxylon; Pla; Plantago; Poac; Poaceae; Pocae; Poe; Pol.v-T; Polemonium; Pollen indet; Pollen indeterminata; Polygonum viviparum-type; Polypodiaceae; Priae; Primulaceae; Quaternary Environment of the Eurasian North; QUEEN; Ranae; Ranunculaceae; Rosaceae; Rosae; Rub.c; Rubus chamaemorus; Rum/Ox-T; Rumex/Oxyria-type; Sal; Salix; Sample, optional label/labor no; Sax; Saxifraga; Scoae; Scrophulariaceae; Sel.b; Selaginella sibirica; Sph; Sphagnum; Tha; Thalictrum; Til; Tilia; Typ; Typha; Ulmus sp.; Val; Valeriana
Tipo

Dataset