Full resolution (TIFF) - On this page / på denna sida - N:o 2 - Pages ...
<< prev. page << föreg. sida << >> nästa sida >> next page >>
Below is the raw OCR text
from the above scanned image.
Do you see an error? Proofread the page now!
Här nedan syns maskintolkade texten från faksimilbilden ovan.
Ser du något fel? Korrekturläs sidan nu!
This page has never been proofread. / Denna sida har aldrig korrekturlästs.
20
Matti Sauramo, The mode of the land upheaval in Fennoscandia.
ing ice margin, but later on, chiefly during a time when the
shoreline in Central Finland moved from the fourth Yoldia down to the
Rhabdonema beach.
HINGE-LINES IN SWEDEN.
The two hinge-lines found in Finland are perhaps traceable also
in Sweden. During excursions arranged there by the Geological
Society of Stockholm last summer the author had the opportunity of
becoming acquainted with Mr. and Mrs. Sten Florin and their
archaeological and geological studies in the surroundings of Lake Hjälmaren,
and then arrived at the conception that the highest limit of the
Ancylus Lake would have a much greater gradient there than in Southern
Sweden and that it consequently was warped abnormally, as was
the case in Western Finland, at the finiglacial hinge-line. According
to this assumption, the hinge-line in question should run in the zone
of the great Swedish lakes north of the Fennoscandian end-moraines.
Apparently the tilting is connected with the local displacements
characteristic of this area (L. von Post, 1929).
In the area of Lake Vettern the late-glacial changes of level during
and after the Salpausselkä stages have recently been studied by
Bergsten (1936) and Erik Nilsson (1936). Their results agree fairly
well with those obtained in Finland, and afford a ground for
correlating the named late-glacial shore-lines in our system. Now, according
to Henr. Munthe (1925), and E. Granlund (1936, Fig. 99) also a higher
water plane of great inclination representing the first shore-line of
the Baltic ice-dammed lake exists there. It coincides with the author’s
BI in Eastern Finland and consequently implies also the occurrence
of a rapid tilting south of the great end-moraines in Sweden. Thus the
gotiglacial hinge-line ought to be found in Southern Sweden.
In Gotland (L. von Post etc. 1925) and in Öland (G. Lundqvist,
1928) the changes of level during post-glacial time are quite similar
to those on the Carelian Isthmus (Hyyppä 1938), but the earlier
shore-lines have not been studied in detail. Therefore we can only
state, that the gotiglacial hinge-line probably lies more southward,
perhaps in Scania, near to the outer limit of Fennoscandia, where
displacements have occurred also during Quaternary time. This can
be seen from Hyyppä’s (1938) diagram, which is the only suitable
one showing the latest changes of level at Limhamn, in southern
<< prev. page << föreg. sida << >> nästa sida >> next page >>
