Náttúrufræðingurinn - 1969, Page 74

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NÁTTÚRUFRÆÐINGURINN
Samuelsson, C. 1924: Vittrings och erosionsstudier pá Island. Geol. íören. For-
ltandl. 46: 377-379. Stockh.
— 1925. NSgra studier över erosionsforeteelser pS Island. Ynter 75; 339—355.
Stockh.
— J926: Studien iiber Die Wirkung des Windes in den kalten und gentes-
sigten Erdteilen. Bull. geol. Univ. Upsala 20: 55—230. Upsala.
Sandgræðslan. ] 958: Ed. Arnór Sigurjónsson, Reykjavík.
Selmer-Olsen, R. 1954: Ont norsk jordarters variasjon i korngradering og
plastisitet. N.G.U. No. 186. Oslo.
Sigbjarnarson, Guttormur. 1967: Tlie Changing Level of Hagavatn and Glacial
Recession in tliis Century. JökuÍl 17: 263—279.
Sveinsson, Runólfur. 1953: A memorandum on soil erosion and reclamation
in Iceland. Skýrsla til ríkisstjórnarinnar. Reykjavík.
Thorarinsson (Þórarinsson), Sigurður. 1939: Thc Ice-Dammed Lakes of Iceland.
Geogr. Ann. 21: 216—242. Stockh.
— og lijarnason, Hákon, 1940: Datering av vulkanske askelager i islándsk
jordmán. Geogr. Tidskr. 54: 5—30. Köbenhavn.
— 1944: Tefrokronologiska studier pá Island. Geogr. Ann. 26: 1—217. Stockh.
— 1951: Laxárgljúfur and Laxárhraun. Geogr. Ann. 35: 1—89. Stockh.
— 1958: The Öræfajökull Eruption of 1362. Acta Nat. Isl. 11, 2. Reykjavík.
— 1960: On the Geology and Geomorphology of Iceland X. Some Remarks
on Wind Erosion in Iceland. Geogr. Ann. 41: 168—169. Stockh.
— 1961: Uppblásturinn á Islandi í ljósi öskulaganna. With English Summary.
Ársrit Skógr. ísl. 1961: 17—54.
— 1964: Aldur öskulaga. Náttúrufr. 34: 113—126.
— 1968: Heklueldar. Reykjavík.
Thoroddsen, Þorvaldur. 1907—191 1: Lýsing íslands I—II. Köbenhavn.
Tómasson, Jens. 1963: Áfok á miðsvæði Þjórsár. Fjölrituð skýrsla til Raforku-
málaskrifstofunnar.
Tu, Hsin Yuan. 1960: Nokkrir míneralógiskir eiginleikar íslenzks jarðvegs.
Viðauki við íslenzkur jarðvegur: 119—123. Reykjavík.
S U M M A R Y
The loessial soil formation and the soil erosion on Haukadalsheidi
by Guttorrnur Sigbjarnarson,
National Energy Aulhority, Reykjavíli.
From geological point of view the loessial soil formation is one of the
many pecularities of Iceland. Tlie investigations this paper deals with are
an attempt to solve some of the problems concerning its accumulation and
how it is subsequently eroded away. According to many authors the loessial
soil formation can be termed loess, whereas it is an aeolian sediment, but i>