Jökull - 01.12.1982, Blaðsíða 110

ferrian ilmenites in basalts of paleomagnetic
significance. J. Geophys. Res. 72 : 5087-5100.
Tarling, D. H. 1966: The magnetic intensity and
susceptibility distributions in some Cenozoic
and Jurassic basalts. Geophys. J. R. Astr. Soc. 11
: 423-432.
Vilmundardóttir, E. G. 1972: Report on geological
investigations at Jökulsá in Fljótsdalur ( in Ice-
landic). National Energy Authority Report, 26
, pp-
Watkins, N. D. 1972: Review of the development of
the geomagnetic polarity time scale and discuss-
ion of prospects for its finer definition. Geol. Soc.
Am.Bull. 83:551-574.
Watkins, N. D., and S. E. Haggerty 1965: Some
magnetic properties and the possible petrogene-
tic significance of oxidized zones in an Icelandic
olivine basalt. Nature 206 : 797-800.
Watkins, N. D., and S. E. Haggerty 1968: Oxidation
and magnetic polarity in single Icelandic lavas
and dykes. Geophys. J. R. Astr. Soc. 15 : 305-
315.
Watkins, N. D., L. Kristjansson and I. McDougall 1975:
A detailed paleomagnetic survey of the type
location íbr the Gilsá geomagnetic polarity
event. Earth Planet. Sci. Lett. 27 : 436-444.
Watkms, N. I)., I. McDougalland L. Kristjánsson 1977:
Upper Miocene and Pliocene geomagnetic se-
cular variation in the Borgarfjördur area of
Western Iceland. Geophys. J. R. Astr. Soc. 49 :
609-632.
Watkins, N. I)., and G. P. L. Walker 1977: Magneto-
stratigraphy of Eastern Iceland. Am. J. Sci. 277 :
513-584.
Wensink, H. 1964: Secular variation of earth magne-
tism in Plio-Pleistocene basalts of Eastern Ice-
land. Geol. en Mijnb. 43 : 403-413.
Wensink, H. 1965: Paleomagnetic stratigraphy of
younger basalts and intercalated Plio-Pleisto-
cene tillites in Iceland. Geol. Rundsch. 54 : 364-
384.
Wdson. R. L. 1966: Furthercorrelations between the
petrology and natural magnetic polarity of lavas.
Geophys. J. R. Astr. Soc. 10 : 413-420.
Wilson, R. L., and S. E. Haggerty 1967: Reversals of
the earth’s magnetic field. Endeavour 25: 104-
109.
Wilson, R. L., and M. W. McElhinny 1974: Investiga-
tion of the large scale paleomagnetic field over
the past 25 million years. Eastward shift of the
Icelandic spreading ridge. Geophys. I. R. Astr.
Soc. 39: 570-586.
Wilson, R. L., and P. J. Smith 1968: The nature of
secondary natural magnetizations in some ign-
eous and baked rocks. J. Geomag. Geoel. 20 :
367-380.
IVilson, R. L., S. E. Haggerty and N. D. Watkins 1968:
Variations of paleomagnetic stability and other
parameters in a vertical traverse of a single Icel-
andic lava. Geophys. J.R. Astr. Soc. 16: 79-96.
Wilson, R. L., P. Dagley and A. G. McCormack 1972a:
Paleomagnetic evidence about the source of the
geomagnetic field. Geophys. J. R. Astr. Soc. 28 :
213-224.
Wilson, R. L., N. D. Watkins, R. Einarsson, T. Sigur-
geirsson, S. E. Haggerty, P. J. Smith, P. Dagley and
A. McCormack 1972b: Paleomagnetism of ten
lava sequences from south-western Iceland.
Geophys.J. R. Astr. Soc. 29 : 459-471.
Wood, D. A. and 1. L. Gibson 1976: The relationship
between depth of burial and mean intensity of
magnetization for basalt from eastern Iceland.
Geophys. J. R. Astr. Soc. 46 : 497-498.
Some books on paleomagnetism and rock magnetism
Haalck, H. 1942: Der Gesteinsmagnetismus. Aka-
dem. Verlagsgesellschaft, Leipzig, 90 pp.
Irving, E. 1964: Paleomagnetism and its application
to geological and geophysical problems. Wiley,
New York, 339 pp.
McElhinny, M. 1973: Paleomagnetism and plate tec-
tonics. C. U. P., Cambridge, 358 pp.
Nagata, T. 1953: Rock Magnetism. Maruzen,
Tokyo, 225 pp. (Second revised edition publish-
ed 1961, 350 pp.)
Manuscript accepted 12 May 1982.
ÁGRIP
SEGULMÆLINGAR Á ÍSLENSKU
BERGI 1951-1981
Leó Kristjánsson, Raunvísindastofnun
Gefið er yfirlit yfir þær greinar, sem komið hafa út
á prenti og fjalla um mælingar á seguleiginleikum
íslenskra bergsýna í rannsóknastofum. Einnig er
drepið á nokkrar rannsóknir sem gerðar hafa verið
með segulmælingum utan húss, og túlkun þeirra.
Greinilegt er, að niðurstöður bergsegulmælinga
frá Islandi skiptu verulegu máli við þróun skilnings
manna á eiginleikum jarðsegulsviðsins, einkum á
sjötta og sjöunda áratugnum. Einnig hafa bergseg-
ulmælingar verið afar gagnlegar við jarðfræðikort-
lagningu, sérlega á Tertier svæðum landsins.
106 JÖKULL 32. ÁR