Advanced

OPTICAL DATING OF A LATE QUATERNARY SEDIMENT SEQUENCE FROM SOKLI, NORTHERN FINLAND

Alexanderson, Helena LU ; Eskola, Kari O. and Helmens, Karin F. (2008) In Geochronometria 32. p.51-59
Abstract
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 bio-stratigraphical 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 similar to 94 ka (MIS 5c), similar to 74-80 ka (MIS 5a) and 42-54 ka (MIS 3). The OSL ages have... (More)
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 bio-stratigraphical 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 similar to 94 ka (MIS 5c), similar to 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. (Less)
Please use this url to cite or link to this publication:
author
publishing date
type
Contribution to journal
publication status
published
subject
keywords
OSL, interglacial-glacial cycle, Fennoscandia, Finland, Weichselian, interstadial
in
Geochronometria
volume
32
pages
51 - 59
publisher
WIND-J WOJEWODA PUBLISHING CO.
external identifiers
  • wos:000266438200007
  • scopus:64749116186
ISSN
1897-1695
DOI
10.2478/v10003-008-0022-9
language
English
LU publication?
no
id
2dacb949-e33b-4b3f-a07c-7659b016d264 (old id 4450050)
date added to LUP
2014-05-26 09:28:17
date last changed
2017-08-27 03:54:11
@article{2dacb949-e33b-4b3f-a07c-7659b016d264,
  abstract     = {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 bio-stratigraphical 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 similar to 94 ka (MIS 5c), similar to 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.},
  author       = {Alexanderson, Helena and Eskola, Kari O. and Helmens, Karin F.},
  issn         = {1897-1695},
  keyword      = {OSL,interglacial-glacial cycle,Fennoscandia,Finland,Weichselian,interstadial},
  language     = {eng},
  pages        = {51--59},
  publisher    = {WIND-J WOJEWODA PUBLISHING CO.},
  series       = {Geochronometria},
  title        = {OPTICAL DATING OF A LATE QUATERNARY SEDIMENT SEQUENCE FROM SOKLI, NORTHERN FINLAND},
  url          = {http://dx.doi.org/10.2478/v10003-008-0022-9},
  volume       = {32},
  year         = {2008},
}