Jökull - 01.12.1988, Blaðsíða 5

TABLEI. Previously reported radiocarbon dates of shells from S-Iceland (Einarsson, 1964), years BP
TAFLA I. Eldri geislakolsaldursgreiningar frá Suðurlandi (Einarsson, 1964).
Lab. no. Location Elevation Original Corrected
m a.s.l. 14 C date 14 C date
Sýni Staður Hœð 14 C aldur Leiðréttur
m y.s. án sjávarleiðr. 14 C aldur
T-362 Brúará at Spóastaðir 55 9.930+140
U-416 Hellisholtalækur 75 9.580±140 9.215±140
U-417 Hellisholtal ækur 75 9.800±150 9.435±150
T-362 is described by Nydal et al. (1964). It is the first radiocarbon dating of an Icelandic shell sample.
Corrections for 13C/12C ratios and apparent age of living marine organisms could not be made for this
sample as necessary data for the corrections is not available. U-416 and U-417 are two datings of the same
sample, described and discussed by Olsson and Piyanuj (1965).
TABLEII. New radiocarbon dates from S-Iceland, years BP.
TAFLA II. Nýjar geislakolsaldursgreiningar frá Suðurlandi.
Lab. no. Sýni Location Staður Elevation m a.s.l. Hœð my.s. Original 14 C date 14 C aldur án sjávarleiðr. Corrected 14 C date Leiðréttur 14C aldur
Lu-2399 Sog at Bíldsfell 20 9.420±80 9.055±80
Lu-2400 Dynjandi in Brúará 60 10.190±90 9.825±90
Lu-2401 Hrepphólar (unit A) 65-70 10.110±140 9.745±140
Lu-2402 Hrepphólar (unit C) 65 9.960±160 9.595±160
Lu-2403 Þrándarholt-Mi ðhús 60 10.360±90 9.995±90
Lu-2404 Þjórsá at Minnahof 65 10.220±90 9.855±90
Lu-2405 Efri-Rauðalækur 20 10.190±130 9.825±130
Lu-2406 Ytri Rangá at Bjarg 30-35 10.380±90 10.015±90
Lu-2596 Oddgeirshólar 25 10.440±90 10.075±90
Lu-2597 Vatnsendi 30 9.840±90 9.475±90
Lu-2598 Syðri-Rauðalækur 10 9.870±90 9.505±90
Lu-2600 Hróarsholtslækur 35 10.060±70 9.695±70
Lu-2601 Ames 70 7.800±60 7.800±60
All samples are referred to 0.95 NBS oxalic acid standard, using the value of 5568 for the half life of 14C.
The base year is 1950. Corrections for 13C/12C ratios and apparent age of living marine organisms have been
made for all samples, using the reservoir age of 365±20 (Hákansson, 1983). All samples are described and
discussed by Hakansson (1986, 1987).
JÖKULL, No. 38, 1988 3