Rit (Vísindafélag Íslendinga) - 01.06.1976, Síða 188
Urriðafoss. Research Report of the National Energy Authority, OSV 7405,
(in Icelandic).
Sœmundsson K.. Björnsson S., Sigvaldason G., Elísson G. and Kjartansson H.,
1966: Rannsókn á jarðhita í Reykholtsdal. Research Report of the National
Energy Authority, August 1966, (in Icelandic).
Sœmundsson K., 1967: Vulkanismus und Tektonik des Hengill-Gebietes Acta.
Nat. Isl. II, No. 7.
Sœmundsson K., 1972: Notes on the geology of the Torfajökull central volcano.
Náttúrufræðingurinn, Vol. 42, pp. 81-99, (in Icelandic with an English sum-
mary).
Schytt W., 1958: Glaciology II, Norwegian — British — Swedish Antarctic ex-
pedition 1949—1952. Scientific Results, Vol. 4, Norsk Polarinstitut Oslo.
Sharp R. P., Epstein S. and Vidziunas /., 1960: Oxygen isotope ratios in the Blue
Glacier, Olympic Mountains, Washington. J. Geophys. Res., Vol. 65, No. 12,
pp. 4043-4059.
Sigvaldason G. E., 1965: Epidote and related minerals in two deep geothermal
drill holes, Reykjavik and Hveragerdi, Iceland. Prof. Pap. U.S. Geol. Surv.
450 — E, No. 200.
Sigbjarnarson G., Theodórsson P. and Árnason B., 1975: The use of the environ-
mental isotope techniques together with conventional methods in regional
groundwater studies. Nordic Hydrology, (in press).
Silverman S., 1951: The isotopic geology of oxygen. Geochim. Cosmochim. Acta,
Vol. 2, p. 26.
Steinþórsson S., 1975: Tephrachronological studies in glacier ice. Manuscript in
preparation.
Theodórsson P., 1967: Natural tritium in grovmdwater studies. Proc. Symp. on
Isotopes in Hydrology (Intemational Atomic Energy Agency), Vienna, pp.
371-380.
Theodórsson P., 1969: The tracing of groundwater movement at Straumsvík. Re-
search Report of the Science Institute of the Univ. of Iceland.
Theodórsson P., 1972: Djúpborun í Bárðarbungu. Research Report of the Science
Institute of the Univ. of Iceland, RH — P — 72 — Bl, (in Icelandic).
Thorkelsson Th., 1910: The hot springs of Iceland. D. Kgl. Danske Vidensk. Selsk.
Skrifter, 7. Række, Naturvidensk. og Matem. Afd. VIII, 4.
Thorkelsson Th., 1940: On thermal activity in Iceland and geyser action. Publ.
Soc. Sci. Isl., No. 25.
Thorsteinsson Th. and Elíasson J., 1970: Geohydrology of the Laugames hydro-
thermal system in Reykjavik, Iceland. Geothermics, special issue 2, Vol. 2,
Part 2, pp. 1191-1204.
184