Rit (Vísindafélag Íslendinga) - 01.06.1967, Qupperneq 182
178
Einarsson, Trausti, 1960: The plateau hasalt areas in Iceland. In: On the
geology and geophysics of Iceland. Int. Geol. Congr. Norden, 1960,
5-20.
— 1962: Upper Tertiary and Pleistocene rocks in Iceland. Soc. Sci. Isl.
36.
— 1965: Remarks on crustal structure in Iceland. Geophys. J. R. Astr.
Soc. 10, 283-288.
Pálmason, Gudmundur, 1963: Seismic refraction investigation of the basalt
lavas in N- and E-Iceland. Jökull 13, 40—47.
Pálmason, Guðmundur, Jens Tómasson, Jón Jónsson and Isleifur Jónsson,
1965: Djúpborun í Vestmannaeyjum. State Electricity Authority, 43
pp. Mimeographed.
Rutten, M. G., 1958: Geological reconnaissance of the Esja-Hvalfjördur
-Ármannsfell area, SW-Iceland. Verh. K. Ned. Geol. Minjubk. Gen.
17, 219-298.
Rutten, M. G. and H. Wensink, 1960: Structure of the central graben of
Iceland. Int. Geol. Congr. Norden, Part 18, 81—88.
Thoroddsen, Thorvaldur, 1906: Island. Grundriss der Geographie und Geo-
logie. Petermanns Mitteilungen, Erg. h. 152 and 153.
Walker, G. P. L., 1965: Evidence of crustal drift from Icelandic geology.
A symposium on continental drift. Phil. Trans. Ser. A 253, 199—204.
DISCUSSION
K. Saemundsson: The circumstance that we observe dila-
tation in the synclines of the active volcanic belts probably
indicates that they are not true synclines (with the inward
dipping Tertiary basalts on both sides extending below them)
but are the result of the huge accumulation of volcanic rocks
within them, accompanied by a proportional amount of sub-
sidence.
Thorleifur Einarsson: I don’t think that any dilatation or
drift has taken place in Iceland nor that the synclines are
the result of sagging by piling up of young volcanics.
K. Saemundsson: If these synclines were the result of fold-
ing we would not expect dilatation in their core as displayed
by the open fissures, normal faults and intensive volcanism,
but rather some compressional features, which are comple-
tely absent.