Jökull - 01.12.1952, Page 11

SUMMARY:
DOIJBLE LATERAL MORAINES IN
THE KANGERDLUGSSUAK REGION
During a flight along the fjord Kangerdlugs-
suak in E-Greenland on June 25th 1950 the
author observed that many of the glaciers in
this area had receded from tioo well-marked
moraine systems of different ages, the outer-
rnost of which seem to mark the maximum pos-
ition of these glaciers in postglacial time.
Especially regular were the double lateral mor-
aines along the Kangerdlugssuak glacier (cf.
Fig) In North East Greenland there have
also been two main stages of recession, as poin-
ted out by Ahlmann and so is the case with
the glaciers on Jan Mayen according to J. N.
Jennings. In his paper: Present Glacier Shrink-
age (1940) the present writer points out the
synchronism of glacier oscillations round the
Northern Atlanlic and attributes the outer-
most moraines in NE-Greenland and Jan Mayen
to a „Hochstand“ about the middle of the
eighteenth century and the younger moraines
to the middle or latter half of the 19th century.
Most likely the moraines in the Kangerdlugs-
suali region are contemporary with those in
NE-Greenland. A study of the vegetation on
these moraines and on the area outside them,
especially the study of lichens, might be able
to fix more exactly the age of the moraines, and
prove the synchronism of moraines at different
glaciers. This method has proved successful in
Northern Sweden where it has been used by
E. Bergström.
' Sigurdur Thorarinsson.
Útsýn til suðausturs yfir
Kangerdlugssuak-jökul og
jaðarurðir hans. (I og II).
Aerial view towards SE
over the Kangerdlugssuak
glacier and its double lat-
eral moraine (1 and II).
To the left of the morain-
es is an ice dammed lake.
Photo. S. Þórarinsson,
25—VI, 1950.
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