Jökull - 01.01.2010, Blaðsíða 148

Agustsdottir et al.
Pálsson, S., G. I. Haraldsson and G. H. Vigfússon 1984.
Eðlismassi og poruhluti bergs. (Densities and rock
porosities, in Icelandic). Tech. Rep. Orkustofnun OS-
84048/VOD-18B, 35 pp.
Parasnis, D. S. 1973. Mining Geophysics, 2nd ed. Elsevier,
Amsterdam, 395 pp.
Pedley, R., J. P. Busby and Z. K. Dabek 1997. Gravmag
user manual. British Geological Survey 73 pp.
Schleusener, A., W. Torge and W. Drewes 1976. The grav-
ity field of northeastern Iceland. J. Geophys. 42, 27-
45.
Schopka, H. H., M. T. Gudmundsson and H. Tuffen
2006. The formation of Helgafell, southwest Iceland, a
monogenetic subglacial hyaloclastite ridge: Sedimen-
tology, hydrology and volcano-ice interaction. J. Vol-
canol. Geotherm. Res. 152, 359–377.
Sæmundsson, K. 1978. Fissure swarms and central vol-
canoes of the neovolcanic zones of Iceland. Geol. J.
Spec. Iss. 10, 415–432.
Sæmundsson, K. 1979. Outline of the geology of Iceland.
Jökull 29, 7–28.
Sæmundsson, K. 1991. Jarðfræði Kröflukerfisins (The
geology of the Krafla volcanic system, in Icelandic).
Náttúra Mývatns. Hið íslenska náttúrufræðifélag, 3–
60.
Sæmundsson, K., M. S. Pringle and B. S. Hardarson 2000.
The age of geological strata in the Krafla volcanic sys-
tem, (in Icelandic). Geoscience Soc. Iceland, spring
meeting abstracts 2000, 26–27.
Tuffen, H., and J. M. Castro 2008. The emplacement of
an obsidian dyke through thin ice: Hrafntinnuhryggur,
Krafla, Iceland. J. Volcanol. Geotherm. Res. In press,
doi:10.1016/j.jvolgeores.2008.10.021.
Walker, G. P. L. 1963. The Breiðdalur central volcano,
eastern Iceland. Quart. J. Geol. Soc. Lond. 119, 29–
63.
Wolfe, C. J., I. T. Bjarnason, J. C. VanDecar and S. C.
Solomon 1997. Seismic structure of the Iceland man-
tle plume. Nature 385, 245–247.
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