Náttúrufræðingurinn - 1989, Síða 58
Ágúst Guðmundsson 1987b. Lateral
magma flow, caldera collapse, and a
mechanism of large eruptions in Ice-
land. Journ. Volcanol. Geotherm. Res.
34. 65-78.
Ágúst Guðmundsson 1988. Effect of ten-
sile stress concentration around
magma chambers on intrusion and ext-
rusion frequencies. Journ. Volcanol.
Geotherm. Res. 35. 179-194.
Einar Kjartansson & Karl Grönvold 1983.
Location of a magma reservoir ben-
eath Hekla volcano, Iceland. Nature
301. 139-141.
Guðmundur Ó. Friðleifsson 1983. The
geology and the alteration history of
the Geitafell central volcano, South-
east Iceland. Óbirt Ph.D. ritg. Uni-
versity of Edinburgh, Skotlandi. 371
bls.
Guðmundur Pálmason 1971. Crustal
structure of Iceland from explosion
seismology. Vísindafélag íslendinga,
Rit 40. 1-187.
Guðrún Larsen 1984. Recent volcanic hist-
ory of the Veiðivötn fissure swarm,
Southern Iceland - an approach to
volcanic risk assessment. Journ.
Volcanol. Geotherm. Res. 22. 33-58.
Guðrún Larsen 1988. Veiðivötn og Veiði-
vatnagos á 15. öld. Ferðafélag íslands,
Árbók. 149-163.
Haukur Jóhannesson 1975. Structure and
petrochemistry of the Reykjadalur
central volcano and surrounding areas,
midwest Iceland. Óbirt Ph.D. ritg.
University of Durham, Englandi. 273
bls.
Helgi Björnsson, Sveinbjörn Björnsson &
Þorbjörn Sigurgeirsson 1982. Penetra-
tion of water into hot rock boundaries
of magma at Grímsvötn. Nature 295.
580-581.
Jón Jónsson 1978. Jarðfræðikort af
Reykjanesskaga. Orkustofnun OSJHD
7831. 303 bls.
Jón Jónsson 1983. Eldgos á sögulegum
tíma á Reykjanesskaga. Náttúrufrœð-
ingurinn 52. 127-139.
Jón Jónsson 1984. Um heiðar og hraun.
Ferðafélag íslands, Árbók. 51-112.
Jón Jónsson 1985. Jarðsaga svæðisins milli
Selvogsgötu og Þrengsla. Ferðafélag ís-
lands, Árbók. 63-82.
Kristin Báckström & Ágúst Guðmundsson
1989. The grabens of Sveinar and
Sveinagja, NE Iceland. Norrœna eld-
fjallastöðin 8901. 38 bls.
Kristján Sæmundsson 1979. Outline of the
geology of Iceland. Jökull 29. 7-28.
Kristján Sæmundsson 1984. Gossaga
Kröflu, Hverfjallsskeið. Ráðstefna um
stöðu Kröfluvirkjunar. Rafmagnsveitur
Ríkisins og Kröfluvirkjun Reykjavtk. 17
bls.
Macdonald, K.C. 1982. Mid-ocean ridges:
fine scale tectonic, volcanic and hydro-
thermal processes within a plate
boundary. Annu. Rev. Earth Planet.
Sci. 10. 155-190.
Sempere, J.C. & Macdonald, K.C. 1987.
Marine tectonics: processes at mid-
ocean ridges. Rev. Geophys. 25. 1313-
1347.
Sigurður Þórarinsson 1958. The Öræfajök-
ull eruption of 1362. Acta Nat. Isl. 2,2.
1-100.
Sigurður Þórarinsson 1968. Heklueldar.
Sögufélagið, Reykjavík. 185 bls.
Sigurður Þórarinsson 1970. Hekla. Al-
menna Bókafélagið, Reykjavík. 59 bls.
Sigurður Þórarinsson 1975. Katla og ann-
áll Kötlugosa. Ferðafélag íslands, Ár-
bók. 129-149.
Sigurður Þórarinsson 1979. The postglacial
history of the Mývatn area. Oikos 32.
17-28.
Sigurður Þórarinsson & Kristján Sæ-
mundsson 1979. Volcanic activity in
historical time. Jökull 29. 29-32.
Sveinn Jakobsson 1979. Petrology of
Recent basalts of the eastern volcanic
zone. Acta Nat. Isl. 26. 1-103.
Sveinn Jakobsson, Jón Jónsson & F. Shi-
do 1978. Petrology of the western
Reykjanes Peninsula, Iceland. Journ.
Petrol. 19. 669-705.
Walker, G.P.L. 1974a. The structure of
Eastern Iceland. I Geodynamics of
Iceland and the North Atlantic area
(ritstj. Leó Kristjánsson). Reidel, Dor-
drecht. Bls. 177-188.