Jökull


Jökull - 01.12.1977, Page 27

Jökull - 01.12.1977, Page 27
rent rifting episode in North Iceland. Na- ture 266: 318-323. lijörnsson, Helgi, 1973: Freezing on a rotary drill in temperate glacier ice. Jökull 23: 53-54. — 1974: Explanation of jökulhlaups from Grímsvötn, Vatnajökull, Iceland. Jökull 24: 1-26. — 1977: The Cause of the jökulhlaups in Skaftá River, Vatnajökull. Jökull 27: 71—78. Dansgaard, IV., 1961: The isotopic composition of natural waters. Medd. om Gr0nland. 165 No. 2. Dansgaard, W., S. J. Johnsen, J. Mtj>ller, ir C. C. Langway, Jr., 1969: One thousand centuries of climatic record from Camp Century on the Greenland ice sheet. Science 166: 377— 381. Egilson, Davið, 1974: Athuganir á gjallfalli í Heimaeyjargosi 1973. [Observations on the tephra from the Heimaey eruption in 1973]. Unpublished B.S. thesis, University of Ice- land, 45 pp. (In Icelandic). Glen, J. W., 1955: The creep of polycrystalline ice. l’roc. Roy. Soc. Lond. A 228: 519-538. Holtzscherer, J. J., 1954: Expedition Franco- Islandaise au Vatnajökull mars-avril 1951. Resultats des sondages seismologiques. Jök- ull 4: 1-33. Johnsen, S. J., W. Dansgaard, H. II. Clausen ir C. C. Langway, 1970: Climatic oscillations 1200-2000 AD. Nature 277 No. 5257: 482- 483. Júnsson, Ólafur, 1945: Ódáðahraun II. 447 pp. Norðri, Akureyri (In Icelandic). Mouritzen, M. ir A. Noe-Nygaard, 1950: Vol- canic ash from the Grímsvötn eruption in 1903. Medd. Dansk Geol. Foren. 71: 583— 584. Persson, Chr., 1966: Undersökning av tre sura asklager pá Island. [Observations on three acid tephra layers in Icelancl]. Geol. Fören. Förhandl. 88: 500—519. (In Swedish). Larsen, Gudriin: 1975: Gjóskulagið H4. [The tephra layer H4]. Unpublished B.S. thesis, University of Iceland, 70 pp. (In Icelandic). Muehlenbachs, K., A. T. Anderson, J., ir G. E. Sigvaldason, 1974: Low-O18 basalts from Iceland. Geochim. Cosmochim. Acta 38: 577-588. Saemundsson, K., 1974: Evolution of the axial rifting zone in northern Iceland and thc Tjörnes fracture zone. Geol. Soc. Amer. Bulletin 85: 495-504. Sheridan, M. F., 1971: Particle size characteri- stics of pyroclastic tuffs. J. Geophys. Res. 76: 5627-5634. Sigurdsson, Sven Þ., 1970: Gravity survey on western Vatnajökull. Jökull 20: 38—44. Sigvaldason, G. E., 1974: Tlie Petrology of Hekla and Origin of Silicic Rocks in Ice- land. In The Eruption of Hekla 1947-1948. V. 1. Soc. Sci. Isl. 44 pp. Sigvaldason, G. E. ir S. Steinthórsson, 1974: Chemistry of tholeiitic basalts from Iceland ancl their relation to the Kverkfjöll hot spot. In L. Kristjánsson (ed.): Geodynamics of Iceland and the North Atlantic Area. D. Reidel Publ. pp. 155-164. Sigvaldason, G. E., S. Steinthórsson, N. Óskars- son ir P. Imsland, 1976: The simultaneous production of basalts enriched and depleted in large lithophilic trace ions. Bull. Soc. Géol. Fran?. (7) t. XVIII, no. 4, p. 863- 867. Sparks, S. R. J., H. Sigurdsson, ir L. Wilson, 1977: Magma mixing: A mechanism for triggering acid explosive eruptions. Nature 267: 315-318. Steingrimsson, Jón, 1783: Fullkomið skrif um Síðueld. [A complete description of the Lakagígar Fires]. In Safn til sögu Islands IV, Copenhagen and Reykjavík 1907—15, pp. 1—57. (In Icelandic). Theodórsson, Páll, 1977: 40-year tritium pro- files in a polar ancl a temperate glacier. In Isotopes and Impurities in Snow and Ice. Proceed. of the Grenoble Symposium, Aug./ Sept. 1975, IAHS Publ. No. 118, pp. 393- 398. Thorarinsson, S., 1944: Tefrokronologiska stu- dier pá Island. [Tephrochronological stu- dies in Iceland]. Geogr. Ann. Stockh. 26: 1—217 (in Swedish). — 1950: Glacier outbursts in tlie river Jökulsá á Fjöllum. (Icel. witli English abstract). Náttúrufr. 20: 113-133. — 1953: Some new aspects of the Grímsvötn problem. J. Glaciol. 2: 267—274. — 1955: Mælingaleiðangur á Vatnajökul vorið 1955. [An expedition to Vatnajökull in the spring 1955]. Jökull 5: 27—29. (In Icelandic). JÖKULL27. ÁR 25
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