Náttúrufræðingurinn - 1962, Blaðsíða 48

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NÁTTÚRUFRÆÐINGURINN
HEIMILDARRIT - REFERENCES
Einarsson, Trausti. 1959. Studies o£ the Pleistocene in Eyjafjörður, Middle
Northern Iceland. Vís. ísl. XXXIII.
— 1962. íslaust svæði á Austurlandi á síðustu ísölcl. Náttúrulr. 32: 25—31.
Emiliani, Cesarc. 1958. Paleotemperature Analysis of Core 280 and Pleistocene
Correlations. Journal of Geology 66: 264—275.
Flint, R. F. and Brandter, F. 1961. Climatic Changes since the Last Inter-
glacial. Am. Jour. Sci. 259: 321—326.
Kjartansson, Guðmundur. 1939. Stadier i isens tilbagerykning fra det sydvest-
islandske lavland. Medd. D. Geol. Forening. Bd. 9: 426—458.
— 1943. Jarðsaga. Árnesingasaga I. Reykjavík 1943.
— 1955. Fróðlegar jökulrákir. Náttúrufr. 25: 154—171.
— 1958. Jarðmyndanir í Holtum og nágrenni. Atvinnudeild Hásk. Rit Lbd.,
B-flokkur. Nr. 11.
— 1961. Glefsur úr jarðfræði. Árbók F. í. 1961: 17-29.
SUMMARY
Evidence of glaciation on the promontary Hálsar between Berufjörður
and Hamarsfjörður in Eastern Iceland
(Remarks to 'F. Einarsson: “An unglaciated area in Eastern Iceland”)
by Gudmundur Kjartansson
Museum uf Nalural History, Department of Geology and Geography, Reykjavik.
In the summer of 1945, the author of the present artide observed glacial
striæ on a headland called Hálsar, stretching into the coastal plain between
the mouths of the fjords Berufjörður and Hamarsfjörður.
Extent of glacialion still farther out than to this point is indicated by the
author’s observation of striæ on promontories in Álftafjörður and Lón, a sltort
tlistance to the south of Hamarsfjörður. In all this area tlie fjord glaciers
extending from the inland ice-sheet seem to have coalesced in front of ilie
iiiglt interjacent mountain ridges, to form an almost uninterrupted brim of
a piedmont glacier on the coastal plain.
Thc possibility that tlie glacial traces referred to might be older than the
last (or Wúrnt) glaciation, is cliscussetl and rejectcd.
For the above stated reasons, the author rejects Trausti Einarsson’s postula-
tion of an unglaciated area on the outer part of the peninsula between Beru-
fjörður ancl Hamarsfjörður during the last glaciation (Einarsson 1962), and
interprets the absence of striæ on the coastal plain, surrounding the ice-
scoured headland Hálsar on three sicles, in tlie way, that the striæ werc abraded
by surf erosion at a íinal stage of the last glacial when the ice had receded
from the coastal plain and this plain in turn became wholly submerged in the
sea up to an clevation of about 35 metres.