Náttúrufræðingurinn

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Náttúrufræðingurinn - 1988, Qupperneq 25

Náttúrufræðingurinn - 1988, Qupperneq 25
Sigurður Þórarinsson 1937. The main geo- logical and topographical features of Iceland. Geogr. Ann. 19. 161-175. Sjómælingar íslands 1985. Sjávarföll við ísland árið 1985. Sjómœlingar íslands, Reykjavík. 16 bls. Steindór Steindórsson 1962. On the age and immigration of the Icelandic flora. Soc. Sci. Islandica, Rit 33. 155 bls. Sörensen, R. 1979. Late Weichselian de- glaciation in the Oslofjord area, south Norway. Boreas 8. 241-246. Trausti Einarsson 1962. íslaust svæði á Austurlandi á síðustu ísöld. Náttúru- frœðingurinn 32. 25-31. Trausti Einarsson 1966. Late and Post- glacial rise in Iceland and subcrustal viscosity. Jökull 16. 157-166. Þórdís Ólafsdóttir 1975. Jökulgarður á sjávarbotni út af Breiðafirði. Náttúru- frœðingurinn 45. 31-36. Þorleifur Einarsson 1961. Pollenanalyti- sche Untersuchungen zur spát- und postglazialen Klimageschichte Islands. Sonderveröff. Geol. Inst. Univ. Köln 6. 52 bls. Þorleifur Einarsson 1967. Zu der Aus- dehnung der weichselzeitlichen Vereis- ung Nordislands. Sonderveröff. Geol. Inst. Univ. Köln 13. 167-173. Þorleifur Einarsson 1968. Jarðfræði, saga bergs og lands. Mál og menning, Reykjavík. 335 bls. Þorleifur Einarsson 1973. Jarðfræði. Heimskringla, Reykjavík. 254 bls. Þorleifur Einarsson 1978. Jarðfræði. Mál og menning, Reykjavík. 240 bls. Þorleifur Einarsson 1979. On the deglacia- tion of Iceland. Abstract, 14. Nordiske geol. v.möte 1980, Norsk geol. Foren- ing, Geolognytt 13. bls. .18. Þorleifur Einarsson 1985. Jarðfræði. Mál og menning, Reykjavík. 233 bls. Þorvaldur Thoroddsen 1905-06. Island. Grundriss der Geographie und Geo- logie. Petermanns Mitteilungen, Er- ganzungsheft no. 152 und 153. Justus Perthes, Gotha. 358 bls. SUMMARY Late Weichselian Deglaciation and Sea-level Changes in East and Southeast Iceland by Hreggviður Norðdahl and Porleifur Einarsson Science Institute University of Iceland Dunhaga 3 IS-107 Reykjavík, Iceland A survey of moraines and marine limits (mapping and aneroid measurements) has been carried out in the area between Hornafjörður and Norðfjörður in East and Southeast Iceland. An examination of the accumulated data has revealed a different extent of the main Icelandic ice sheet and its outlet glaciers and different heights for the marine limits in the area. This differ- ence in height and extent occurs both lo- cally and on a regional scale, but is corre- lated to three separate stages in the de- glaciation and sea-level changes in east and southeast Iceland. The Fáskrúðsfjörður stage, the oldest stage represents the first standstill or read- vance of the glaciers since the beginning of their retreat after the Weichselian maximum extent. During or prior to this stage sea-level transgressed and reached its highest Late Weichselian position at about 52 m above sea-level (a.s.l.) at the moraines in the outer part of Fáskrúðs- fjörður, Reyðarfjörður and Norðfjörður. At that time the major ice divide of the Icelandic ice sheet in East Iceland was lo- cated between Kverkfjöll in the south and Melrakkaslétta in the north. A secondary ice divide coincided approximately with the present water divide between the fjords and Fljótsdalshérað in East Iceland. This secondary ice divide separated the 79
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