Jökull - 01.12.1983, Qupperneq 56

Woodhams. 1976: A mössbauer and IR
spectroscopic study of the structure of nontron-
ite. Clays Clay Min. 24: 53-59.
Hald, N., A. Noe-Nygaard and A.K. Pedersen, 1971:
The Kroksfjörður central volcano in NW Ice-
land. Acta Nat. Isl.II (10).
Heer, 0. 1868: Die Miocene Flora von Island, Flora
fossilis arctica I: 139-155.
Iijima, A. and M. Utada 1972: A critical review on
the occurence of zeolites in sedimentary rocks in
Japan. Jap. J. Geol. Geogr. 162: 161-184.
Jakobsson, S. 1971: Myndun móbergs í Surtsey. Nátt-
úrufræðingurinn 41: 124-128.
Johannesson, H. 1972: The Tertiary lava pile between
Norðurárdal and Hvitársíða Western Iceland
(B.S. diss.) Reykjavík. Univ. Iceland. 57 pp. (In
Icelandic.)
Jónsson, J. 1978: Surtarbrandslögin við Borgarstúf.
(On lignite bearing strata in Hornaíjörður).
Náttúrufræðingurinn 48: 192-195.
Kierulf, Th. 1850: Um Hreðavatn kullene. Nyt,
Mag. Naturvit. 7: 41-42.
Keller, W.D. 1957: The principles of chemical
weathering. Lucas Brothers, Columbia, Miss-
ouri.
Kirkman,J.H. 1980: Clay mineralogy ofa sequence
of andesitic tephra beds of Western Taranaki,
New Zealand. Clay Min. 15: 157-163.
Kjartansson, G. 1968: Jarðfræðikortafíslandi, blað2,
Miðvesturland. Menningarsjóður, Reykjavík.
Kjartansson, G. 1969: Jarðfræðikort afíslandi, blað 1,
Norðvesturland. Menningarsjóður, Reykjavik.
Kraeft, U. 1972: Práparation fúr die Röntgenspekt-
ralanalyse nach neuen und bewáhrten Gesichts-
punkten. G-I-T, Fachzeitschrift fúr das Labora-
torium 16: 679-682.
Kristjánsson, L. 1968: Palaeomagnetism and geology
of northwestern Iceland. Earth Planet. Sci. Lett.
4: 448-450.
Kristjánsson, L. 1973: Rauðu millilögin. Týli 3: 57-60
(in Icelandic).
Kristjánsson, L., R. Pátzold, and J. Preston. 1975: The
palaeomagnetism and geology of the Patreks-
fjörður-Arnarfjörður Region of North West Ice-
land. Tectonophysics 25: 201-216.
Kristmannsdóttir, H. 1975a: Clay minerals formed by
hydrothermal alteration of basaltic rocks in Ice-
landic geothermal íields. Geol. Foren. Förh.
Sthlm. 97: 289-292.
Kristmannsdóltir, H. 1975b: Hydrothermal alteration
of basaltic rocks in Icelandic geothermal
areas.
2nd. U.N. Symp. on Developm. and use ofGeo-
thermal Res., San Francisco, USA, May 20-29,
1975.
Kristmannsdóttir, H. 1977: Types of clay minerals in
hydrothermally altered basaltic rocks, Reykja-
nes, Iceland. Jökull 26: 30-39.
Kristmannsdóttir, H. 1979: Alteration of basaltic rocks
by hydrothermal activity at 100-300°C. InM.M.
Mortland and V.C. Farmer (Eds.) Int. Clay
Conf. 1978. Developments in Sedimentology 27:
359-367.
Kristmannsdóttir, H. and J. Tómasson, 1976: Hydro-
thermal alteration in Icelandic geothermal
fields. Soc. Sci. Isl. 5: 171-180.
Kristmannsdóttir, H. and J. Tómasson, 1978: Zeolite
zones in geothermal areas in Iceland. In I.B.
Sand and F. Mumpton (Eds.): Natural zeolites,
occurrence, properties, use. Pergamon Press,
Oxford and New York.
Kuzvart, M. 1978: Kaolin genesis. Episodes No. 4:
12-15.
Lippman, F. 1954: Uber einen Keuperton von Zais-
ersweihler bei Maulbronn. Heidelberg Beitr.
Min.4: 130-134.
Loughnan, F.C. 1969: Chemical weathering of the
silicate minerals. Am. Elsevier Pblish. Co. Inc.,
New York.
McDougall, /., K. Stemundsson., H. Jóhannesson., N.D.
Watkins and L. Kristjánsson 1977: Extension of the
geomagnetic polarity timé scale to 6.5 m.y.: K-
Ar dating, geological and paleomagnetic study
of a 3500-m lava succession in western Iceland.
Geol. Soc. Am. Bull. 88: 1-15.
AlcDougall, L, N.D. Watkins, and L. Kristjánsson
1976: Geochronology and paleomagnetism of a
Miocene Pliocene lava sequence at Bessastadaá,
Eastern Iceland. Am. J. Sci. 276: 1078-1095.
McDougall, /., N.D. Watkins., G.P. Walker and L.
Krisljánsson 1976: Potassium-Argon and Paleo-
magnetic Analysis of Icelandic lava flows: Lim-
its on the AgeofAnomaly 5. J. Geophys. Res. 81:
1505-1512.
McDougall, /., and H. Wensink 1966: Paleomagnet-
ism and geochronology of the Pliocene-Pleisto-
cene lavas in Iceland, Earth Planet. Sci Lett. 1:
232-236.
Mehra, P.O. and M.L. Jackson, 1960: Iron oxide re-
moval from soils and clay by a dithionite-citrate
system with sodium bicarbonate buffer. Clays
ClayMin. 7:317-327.
Mendelovici, E., Sh. Yariv and R. Villalba 1979: Iron-
bearing kaolinite in Venezuelan laterites: L
54 JÖKULL 33. ÁR