Jökull - 01.12.1978, Page 23

Fig. 2. Rauðhólasandur, a proglacial sandur-plain to the east of the Raudhólar hyaloc-
lastite-ridge. In the lower right corner of the map, a small hill cut through by a superposed
gorge, can be seen. Both the gorge and the sandur-plain were formed in a jökulhlaup when
the ice margin lay at the southern terrace of Raudhólasandur. Explanations: 1. Lateglacial
fluvioglacial sediments. 2. Recent fluvioglacial sediments. 3. Hyaloclastite. 4. Till. 5.
Terrace. 6. Channel cut into sediments. 7. Channel cut into bedrock.
Mynd 2. Rauðhólasandur, myndaður við jökuljaðar íjökulhlaupi. Farvegurinn í gegnum móbergshœðina
í neðra hægra horni kortsins grófst undir jökli í sama hlaupi. Skýringar: 1. Jökulárset frá síðjökultíma. 2.
Jökulárset frá nútíma. 3. Móberg. 4. Jökulruðningur. 5. Hjalli. 6. Farvegur grafinn í set. 7. Farvegur
grafinn í berg.
slope, as unwashed till was found under the
terrace slope. Thus the formation may be cal-
led proglacial or ice-contact sandur-plain.
The gradient of the sandur is 11 m/km
towards north and northwest. A distinctive
drainage pattern is spread out from the
southeastern corner.
The most characteristic feature of the
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