Jökull - 01.01.2009, Blaðsíða 75

Deglacial and Holocene sediment distribution in Hestvatn, South Iceland
Table 2. The chronology of the Hestvatn record of the GLAD4-HST03 cores is based on dated tephra layers
and radiocarbon dates of humic acid fraction of total dissolved organic carbon (h), microfossils (m) and ma-
rine molluscs (s). A 400-year reservoir correction is used for the marine carbonate ages according to results of
Sveinbjörnsdóttir et al. (1998) (corrected dates marked with *). Calibrated ages were obtained using the CALIB
program Rev. 4.4.2 (Stuiver and Reimer, 1993; Stuiver et al., 1998). Calibrated ages are presented with 1s and
95% confidence level. Date R = radiocarbon dated, I = interpolated radiocarbon date, W = wiggle-match of
radiocarbon dates, IC = ice-core age. H = historical account. – Aldursákvarðanir fyrir Hestvatnssetið byggjast
á þekktum gjóskulögum og geislakolsmælingum á skeljum, með 400 ára aldursleiðréttingu sjávar, samanber
niðurstöður Árnýjar E. Sveinbjörnsdóttur og fl. (1998). Leiðréttur aldur (merktur *), var fenginn með CALIB
forritinu Rev. 4.4.2 (Stuiver og Reimer, 1993; Stuiver og fl. 1998).
Hestvatn core section cum. depth sample number radiocarbon age cal. age date Reference
(cm) /tephra (14C yr BP) (yr BP) type
NORTH BASIN CORE
GLAD4-HST03-2A-1H-1 50 NSRL-13571 (h) 1820±15 1764±32 R Hannesdóttir, 2006
GLAD4-HST03-2A-1H-1 109 K-1500 tephra X 460 H Þórarinsson, 1975
GLAD4-HST03-2A-1H-1 173 NSRL-13468 (m) 1750±30 1660±48 R Hannesdóttir, 2006
GLAD4-HST03-2A-1H-2 219 Vö tephra 871±2 AD 1080±2 IC Grönvold et al., 1995
GLAD4-HST03-2A-1H-2 231 NSRL-13741 (h) 2020±20 1963±29 R Hannesdóttir, 2006
GLAD4-HST03-2A-2H-1 349 KE tephra1 2850±10 2967±24 I Róbertsdóttir, 1992
GLAD4-HST03-2A-2H-1 349 KE tephra2 x 2914±104 I Hannesdóttir, 2006
GLAD4-HST03-2A-2H-1 357 NSRL-13612 (h) 3910±15 4351±49 R Hannesdóttir, 2006
GLAD4-HST03-2A-2H-1 360 H3 tephra 2880±35 3066±108 R Dugmore et al., 1995
GLAD4-HST03-2A-2H-1 393 KN tephra1 3300±100 3523±118 I Róbertsdóttir, 1992
GLAD4-HST03-2A-2H-1 393 KN tephra2) x 3444±68 I Hannesdóttir, 2006
GLAD4-HST03-2A-2H-1 458 NSRL-13501 (h) 4870±25 5615± 25 R Hannesdóttir, 2006
GLAD4-HST03-2A-2H-1 464 H4 tephra 3830 ±15 4260±20 W Dugmore et al., 1995
GLAD4-HST03-2A-2H-2 555 T tephra x 6100±100 I Jóhannsdóttir, 2007
GLAD4-HST03-2A-2H-2 562 NSRL-13573 (h) 6000±20 6810±52 R Hannesdóttir, 2006
GLAD4-HST03-2A-2H-2 571 A/A-1 tephra 5415 6300±100 I Jóhannsdóttir, 2007
GLAD4-HST03-2A-2H-2 593 A/A-2 tephra 5785 6700±100 I Jóhannsdóttir, 2007
GLAD4-HST03-2A-2H-2 604 A/A-3 tephra 5893 6800±100 I Jóhannsdóttir, 2007
GLAD4-HST03-2B-3H-2 615 A/A-4 tephra 6120 7100±100 I Jóhannsdóttir, 2007
GLAD4-HST03-2B-3H-2 628 SILK A8 tephra 6400 7300±100 I Jóhannsdóttir, 2007
GLAD4-HST03-2B-3H-2 657 SILK A9 6600 7500±100 I Jóhannsdóttir, 2007
GLAD4-HST03-2A-3H-1 668 NSRL-13574 (h) 7535±20 8361±15 R Hannesdóttir, 2006
GLAD4-HST03-2A-3H-1 723 ThB-1 tephra 7330 8550±100 I Jóhannsdóttir, 2007
GLAD4-HST03-2A-3H-1 724 ThH-1 tephra 7380 8600±100 I Jóhannsdóttir, 2007
GLAD4-HST03-2A-3H-1 729 ThB-2 tephra 7445 8700±100 I Jóhannsdóttir, 2007
GLAD4-HST03-2A-3H-1 736 A/B-1 tephra 7795 8950±100 I Jóhannsdóttir, 2007
GLAD4-HST03-2A-3H-1 751 ThE-1 tephra 8015 9100±100 I Jóhannsdóttir, 2007
GLAD4-HST03-2A-3H-1 752 NSRL-13502 (h) 8870±45 10,029±120 R Hannesdóttir, 2006
GLAD4-HST03-2A-3H-2 792 Saksunarvatn tephra 9000 10,180±60 IC Grönvold et al., 1995
GLAD4-HST03-2A-3H-2 875 NSRL-13742 (h) 9665±35 11,029±139 R Hannesdóttir, 2006
GLAD4-HST03-2A-4H-2 1130 NSRL-13744 (h) 9135±20 10,292 ±68 R Hannesdóttir, 2006
GLAD4-HST03-2A-5H-3 1417 NSRL-13472 (s) *9860±60/ 11,219±122 R Hannesdóttir, 2006
10,260±60
GLAD4-HST03-2A-9H-1 2228 NSRL-13473 (s) *9900±65/ 11,238±120 R Hannesdóttir, 2006
10,300±65
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