Jökull - 01.12.1986, Side 14

Fig. 1. The Volcanic zones of Iceland. The Reykja-
nes Volcanic Zone connects the Mid-Atlantic Ridge
with the volcanic zones across Iceland (Sigurðsson
1985). Mynd 1. Gosbelti á íslandi. Reykjanesgosbeltið
tengir Miðatlantshafshrygginn við megingosbeltin á
íslandi (Freysteinn Sigurðsson 1985).
r-rqvOD-jK-890-FS I
LH 63.04.0533-GSJ I
I Kolbeinsey Ridge
I = Main Zones
=_ Hlll Cross Zones
Fig. 2. Groundwater supply from
the Reykjanes peninsula. About 60%
of the population of Iceland enjoy the
freshwater from the rich groundwater
reservoirs on the Reykjanes penin-
sula (Sigurðsson & Sigbjarnarson
1985). Mynd 2. Ferskvatnstaka á.
Reykjanesskaga. Um 60% íbúa'
landsins fá neyzluvatn sitt úr grunn-
vatni á Reykjanesskaga (Freysteinn
Sigurðsson & Guttormur Sigbjarnar-
son 1985).
Explanations/Skýringar:
1. Urban settlements areas, numbers relate to popu-
lation / Þéttbýlissvœði og íbúafjöldi.
2. Early Quaternary volcanics and intrusives / Ár-
kvatert berg.
3. Interglacial basalts / grágrýti.
4. Subglacially erupted rocks (hyaloclastites and
pillow lavas) / móbergsfjöll.
5. Postglacial basalt lavas / hraun frá nútíma.
6. Tectonic fissure swarms / sprunguskarar.
7. Direction of groundwater flow / stefna grunnvatns-
strauma.
8. Coastal outflow, estimated discharge in m3/s /
Fjörurennsli, metið rennsli í m’!s.
9. Natural spring areas / Lindasvæði.
10. Sites of water extraction / vatnsból.
11. Pipelines / vatnsveitur.
12