Optical dating of a late quaternary sediment sequence from Sokli, Northern Finland

Alexanderson, H.; Eskola, K. O.; Helmens, K. F.

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Artykuł - szczegóły

Czasopismo

Geochronometria

2008 | Vol. 32 | 51-59

Tytuł artykułu

Optical dating of a late quaternary sediment sequence from Sokli, Northern Finland

Autorzy

Alexanderson, H. , Eskola, K. O. , Helmens, K. F.

Wybrane pełne teksty z tego czasopisma

https://www.geochronometria.com/

Warianty tytułu

Języki publikacji

Abstrakty

Interstadial and non-glacial stadial sediments collected in boreholes from Sokli in northeastern Finland have been dated by optically stimulated luminescence on quartz and feldspar grains. The quartz OSL ages follow stratigraphic order, with one exception, and support the litho- and biostratigraphical correlation with the NW European mainland climate-stratigraphy and the marine oxygen-isotope stages. Feldspar IRSL dates generally overestimate the age, probably due to incomplete bleaching. The data show that during the last glacial cycle north-eastern Finland was not glaciated until MIS 5b, around 90 ka. Interstadial conditions occurred around ∼94 ka (MIS 5c), ∼74-80 ka (MIS 5a) and 42-54 ka (MIS 3). The OSL ages have large standard errors mainly due to small sample sizes, relatively poor luminescence characteristics and uncertainties in dose-rate determinations.

Słowa kluczowe

datowanie metodą OSL cykle glacjalno-interglacjalne Fennoskandia Finlandia Weichselian interstadiał

OSL interglacial-glacial cycle Fennoscandia Finland Weichselian interstadial

Wydawca

Czasopismo

Geochronometria

Rocznik

2008

Tom

Vol. 32

Strony

51-59

Opis fizyczny

Bibliogr. 39 poz., rys., tab.

Twórcy

autor

Alexanderson, H.

autor

Eskola, K. O.

autor

Helmens, K. F.

Department of Plant and Environmental Sciences, Norwegian University of Life Sciences, P.O. Box 5003, NO-1432 Ĺs, Norway, helena.alexanderson@umb.no

Bibliografia

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Bibliografia

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