Jökull - 01.12.1979, Blaðsíða 75

Petrology of the western Reykjanes Peninsula,
Iceland. J. Petrol. 19: 669—705.
Jóhannesson, H., 1975: Structure and
petrochemistry of the Reykjadalur central
volcano and the surrounding areas, Midwest
Iceland. Unpub. Ph. D. thesis, Univ. of
Durham.
Kristmannsdóttir, H., 1971: Anorthosite inclusions
in Tertiary dolerite from the island groups
Hrappsey and Purkey, West Iceland. J. Geol.
79: 741—748.
Noe-Nygaard, A., 1940: Sub-glacial volcanic
activity in ancient and recent times. Folia
Geogr. Dan.: 67 pp.
O’Nions, R. K., R. J. Pankhurst and K. Grönvold,
1976: Nature and development of basalt
magma sources beneath Iceland and the
Reykjanes Ridge. J. Petrol 17: 315—338.
Peacock, M. A., 1926: The petrology of Iceland,
Part I, the basic tuffs. Trans. Roy. Soc.
Edinburgh 55: 51 — 76.
Roobol, M. J., 1974: The geology of the Vesturhorn
intrusion, SE Iceland. Geol. Mag. 111: 273—
368.
Schilling, J.-.G., 1973: Iceland mantle plume:
Geochemical study of Reykjanes Ridge. Nature
244: 565—571.
Sigurdsson, H., 1970: The petrology and chemistry
of the Setberg volcanic region and of the
intermediate and acid rocks of Iceland. Unpubl.
Ph. D. tesis, Univ. of Durham.
Sigurdsson, H., 1977: Generation of Icelandic
rhyolites by melting of plagiogranites in the
oceanic layer. Nature 269: 25 — 28.
Sigurdsson, H., J.-G. Schilling and P. S. Meyer,
1978: Skagi and Langjökull volcanic zones in
Iceland: 1. Petrology and structure. J. Geophys.
Res. 83: 3971—3982.
Sigvaldason, G. E., 1969: Chemistry of basalts from
the Icelandic rift zone. Contr. Min. Petrol. 20:
357—370.
Sigvaldason, G. E., 1974: The Petrology of Hekla
and origin of silicic rocks in Iceland. The
eruption of Hekla 1947—1948. Soc. Sci.
Islandica, V,l, Reykjavik: 44 pp.
Sigvaldason, G. E., 1974: Basalts from the centre of
the assumed Icelandic mantle plume. J. Petrol.
15: 497—524.
Steinthórsson, S., 1964: The ankaramites of
Hvammsmúli, Eyjafjöll, southern Iceland. Acta
Nat. Islandica, II, 4: 32 pp.
Tilley, C. E., H. S. Yoder and J. F. Schairer, 1967:
Melting relations of volcanic rock series.
Carnegie Inst. Wash. Yearb. 65: 260—269.
Walker, G. P. L., 1960: Zeolite zones and dike
distribution in relation to the structure of the
basalts of eastern Iceland. J. Geol. 68: 515 — 528.
Wetzel, R., E. Wenk, W. Stern and H. Schwander,
1978: Beitráge zur Petrographie Islands.
Vulkaninstitut I. Friedl. No. 10: 128 pp.
Wood, D. A., 1977: Major and trace element
variations in the Tertiary lavas of eastern Ice-
land and their significance with respect to the
Iceland geochemical anomaly. J. Petrol. 19:
393 —436.
JÖKULL 29. ÁR 73