Náttúrufræðingurinn - 1985, Side 36

Trausti Einarsson. 1957. Magneto-geolo-
gical mapping in lceland with the use of
a compass. — Adv. Phys. 6: 232—239.
Walker, G.P.L. 1959. Geology of the
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— Quart. J. Geol Soc. London 114:
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Þorbjörn Sigurgeirsson. 1957. Direction of
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SUMMARY
Paleomagnetic polarity
measurements in stratigraphy
by
Leó Kristjánsson
Science Institute
University of Icelancl
Reykjavík
Due to fortuitous circumstances, geologists in
Iceland have been able to use paleomagnetic
polarity zones, as delineated by measurements
on hand samples in the field, in stratigraphic
correlation within the late Tertiary to Ouater-
nary lava pile.
This article explains the phenomena upon
which these measurements are dependent, and
sets out various error sources and deficiencies of
the field magnetic mcthod. It is discussed how
some of these errors may be circumvented by
proper procedures in i'ield measurements and
interpretation, and how most of them are
eliminated in standard laboratory measure-
ments on oriented core samples.
For additional information on historical or
technical aspects of paleomagnetic research in
Iceland, thc reader is referred to recent articles
in Jökull (Leó Kristjánsson 1982, 1984).