Jökull - 01.01.2015, Blaðsíða 75

Marine climate variability from Arnarfjörður, NW Iceland
ICEGC
FC
EIC
NIIC
NAC
PW
65
°N
60
°N
55
°N
40°W 30°W 20°W 10°W 0°W
A)
Iceland
Great
Britain
Greenland
Depth (m)
Denmark Strait
0
2000
4000
5000
3000
1000
70
°N
C)
B)
Figure 1A). Map of the main surface currents
around Iceland (PW = Polar water, EGC = East
Greenland Current, EIC = East Icelandic Current,
NIIC = North Icelandic Irminger Current, IC =
Irminger Current, NAC = North Atlantic Current,
FC = Faroe Current). B) Location map of the Vest-
firðir Peninsula showing the study site Arnarfjörð-
ur and the highland area Gláma, D = Dýrafjörður,
T = Tálknafjörður. C) Multibeam measurements
from Arnarfjörður (www.hafro.is). The location
of core A2010-10-586 is shown with a purple dot,
B = Borgarfjörður, L = Langanes and S = Suður-
firðir. – A) Hafstraumar í kringum Ísland. B) Yfir-
litskort af Vestfjörðum, Arnarfjörður og hálendis-
svæðið Gláma. C) Fjölgeislamælingar frá Arnar-
firði (www.hafro.is). Staðsetning kjarnans er sýnd
með fjólubláum punkti.
packed and brought to the Institute of Earth Sciences,
University of Iceland, for initial processing, descrip-
tion and subsampling.
Lithology and sedimentology
Core A2010-10-586 was split into five units (A-E).
Apart from the upper most 30 cm, no clear changes in
color or structure could be seen by the naked eye. The
X-rays, however, revealed some variations in grain
size, with much finer grain size in the lower part of the
core. The lower part of the core also contained higher
abundance of mollusks whereas the middle and upper
parts contained more of coarser grained material. The
top 30 cm of the core was much darker and more liq-
uefied than the rest of the core.
JÖKULL No. 65, 2015 75