Jökull - 01.01.2004, Síða 125

Sigvaldason, G. E. and G. Elisson 1965. Preliminary report
on collection and analysis of volcanic gases from
Surtsey. Surtsey Research Progress Report I, 34–40.
Thorarinsson, S., Th. Einarsson, G. E. Sigvaldason and
G. Elisson 1964. The submarine eruption off the Vest-
mann Islands 1963–64. A preliminary report. 11 pp.
Napoli: Stablimento tipografico Francesco Giannini &
Figli.
Abstracts and conferences – Ráðstefnur og ágrip
Karlsson, H. R., G. E. Sigvaldason, N. Óskarsson and J.
M. Browning 2002. Origin of low O18 mafic magmas
in Iceland: Clues from Askja and Sveinagja volcanoes,
The 25th Nordic Geological Winter Meeting, Reykja-
vík, 6–9 Jan 2002, abstract volume, 108.
Tilling, R. I., T. J. Casadevall, G. H. Heiken and
G. E. Sigvaldason 1991. Volcano observatories and
volcanic ash warning; first international symposium
on volcanic ash and aviation safety (30, Engineering
geology No. C 1065). U.S.G.S. Reston, VA, USA.
Sigvaldason, G. E. 1991. Nordisk geoexkursion til Island
1991. vulkanologi. Nordisk vulkanologisk institut 27.
mars 1991.
Fox, T., G. H. Heiken, G. E. Sigvaldason and R. Til-
ling 1989. Volcanic ash warnings for civil aviati-
on; continental magmatism; abstracts (30, Engineer-
ing geology 131, New Mexico Bureau of Mines and
Mineral Resources, Socorro, NM, USA.
Sigvaldason, G. E. 1988. Kvikumynstur og kvikugerð:
hugleiðingar um ný gögn frá Öskju og Kröflu. Ráð-
stefna JFÍ um Eldvirkni á Íslandi 9. apríl 1988,
Jarðfræðafélag Íslands (The Icelandic Geoscience
Society), 8–9.
Sigvaldason, G. E. 1988. Ísaldarjöklar og eldvirkni. Ráð-
stefna JFÍ um Eldvirkni á Íslandi 9. apríl 1988,
Jarðfræðafélag Íslands (The Icelandic Geoscience
Society), 11.
Sigvaldason, G. E. and Japan, Kagoshima Prefectural Go-
vernment, Kagoshima 1988. International cooperation
in volcanology; Kagoshima international conference
on volcanoes 1988; proceedings. Kagoshima, Japan.
Sigvaldason, G. E. 1987. Rift volcanism, keynote
presentation, Hawaii symposium on “How Volcanoes
Work”, Hawaii 18.–26. jan. 1987.
Oskarsson, N. and G. E. Sigvaldason 1987. Role of the
halogens and other volatiles in the anatexis of sub-
ducted metamorphosed rocks; effect on degassing and
viscosity of silica saturated magmas and on metal hali-
de transfer. International Union of Geodesy and Geop-
hysics (IUGG) XIX general assembly; abstracts, 19,
403.
Sigvaldason, G. E. 1986. Askja, a basaltic caldera in
the Icelandic rift zone. International Volcanological
Congress Abstract Volume, p. 338.
Sigvaldason, G. E. 1986. Breidamerkursandur and Breida-
merkurjokull. Eldgja. Hekla. The Lakagigar eruption.
Oraefajokull. Fifth international symposium on water-
rock interaction; field guide. Reykjavik.
Sigvaldason, G. E. and S. Arnorsson 1986. Skeidarars-
andur and Grimsvotn. Fifth international symposium
on water-rock interaction; field guide. Reykjavik, Ice-
land.
Sigvaldason, G. E. and K. Lang 1986. Vulkanisme og
rifting i Krafla 1975–1984, et kapitel in Nordvulks
historie. (Volcanism and rifting of Krafla, 1975-1984)
abstracts, 17th Nordic geological meeting, Helsinki,
Finland.
Sigvaldason, G. E. 1977. Öskjugosin 1875 og síðar.
Ráðstefna um íslenska jarðfræði 24.–25. nóv. 1977,
Jarðfræðafélag Íslands (The Icelandic Geoscience
Society), 14.
Sigvaldason, G. E. 1973. The petrology of Hekla and orig-
in of silicic rock in Iceland. The Icelandic Geoscience
Society, March 1972, 49.
Muehlenbachs, K. A. T. Anderson and G. E. Sigvaldason
1972. The origins of O18-poor volcanic rocks from
Iceland. Eos, Transactions, Am. Geoph. Union 53,
556.
Steinthorsson S., L. Kristjansson and G. E. Sigvaldason
1971. Studies of drill cores from an unusual magnetic
high in SW-Iceland. Reading, abstract fjölrit.
Sigvaldason, G. E. 1968. Structure and products of sub-
aquatic volcanoes in Iceland. (Abstract). Surtsey Rese-
arch Progress Reports IV, 141–142.
Sigvaldason, G. E. 1967. Dyngjufjoll and Askja. In: S.
Björnsson (ed.) Iceland and Mid-Ocean Ridges, Soc.
Sci. Islandica 38, 200.
Various articles in Icelandic – greinar á íslensku
Guðmundur Sigvaldason 2000. Vísindasjóður, atvinnulíf
og Evrópstyrkir. Dagur 25. feb., 7
— 1998. Hálendið. Útivist 24, 79–83.
— 1998. Upprifjun um jarðvegsrof og gróðureyðingu.
Morgunblaðið 6. des., 34.
— 1998. Hálendi. Dagur 7. maí, 7.
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