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Viser treff 412-431 av 1064
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Intrusive rocks of the northern Iveland-Evje area, Aust-Agder.
(NGU (322), Journal article, 1975)In the northern Iveland-Evje area extensive magmatic activity occurred during the so-called Sveconorwegian igneous period. Two intrusive episodes can be distinguished through apparently they occurred close in time. The ... -
Investigations at the south-western border of the Sparagmite Basin (Gausdal Vestfjell and Fåberg Vestfjell), Southern Norway.
(NGU (266), Journal article, 1970)Descriptions are given of lithologies deposited in the original Sparagmite Basin. These rocks can be classified into a parauthochthonous older part and an allochthonous younger unit. Most of the formations of the Sparagmite ... -
Isavsmelting i og omkring midtre Gudbrandsdalen.
(NGU (223), Journal article, 1963)Observed glacial striae showing direction of ice-movement during the last active stage of the inland-ice are shown in fig. 1. Supposed major directions of ice movement are also shown in fig. 3. In the mountain parts are ... -
Isbevegelse i Lillehammer-området, Sør-Norge, under siste nedising.
(NGU (378), Journal article, 1983)The ice movement from the last glaciation in the northern part of the lake Mjøsa district are presented in an ice phase model. Four main ice phases are reconstructed mainly based on striation, but fluted surfaces, poorly ... -
Isfrie refugier i Norge under istiden.
(NGU; Skrifter (297; 7), Journal article, 1973)A review is given of the historical development of the theory of unglaciated refugia in Norway. The phyto-geographical and geological arguments for and against the theory are discussed, and our knowledge of the ice-borders ... -
Isotope geochronology in the high-grade metamorphic Precambrian of southwestern Norway: new data and reinterpretation.
(NGU (359), Journal article, 1980)A new series of isotopic age data is reported from the high-grade metamorphic Precambrian in S.W. Norway, mainly from the Sirdal-Ørsdal area. U-Pb investigations on suites of zircons from three augen gneisses and a pyroxene ... -
Isotope geochronology of the Eidfjord Granite, Hardangervidda, West Norway.
(NGU (327), Journal article, 1976)The Eidfjord Granite has a 7-point whole-rock Rb-Sr isochron age of 931 +- 35 Ma with initual 87Sr\/86Sr = 0.7058 +- 0.0028 (50.0 X (10)9 year 87Rb half life; errors at 95 per cent confidence level). Two separated biotites ... -
Isotopic age determinations in South Norway: II. The problem of errorchron ages from Telemark rhyolites.
(NGU Bulletin (418), Journal article, 1990)Two sets of Telemark Supracrustal acid metavolcanics of the Rjukan Group were investigated by the Rb-Sr whole-rock method. Eleven smples within a sampling range of about 10 m were taken at Kvamsstøl at a distance of about ... -
Isotopic composition, deposition ages and environemnts of Central Norwegian Caledonian marbles
(NGU Bulletin (427), Journal article, 1995) -
Isotopic evidence on the age of the Trysil porphyries and granites in eastern Hedmark, Norway.
(NGU (266), Journal article, 1970)Rocks from the (sub-Jotnian) acidic plutonic and volcanic basement complexes in the Trysil area, eastern Hedmark, yield a Rb-Sr isochron age of 1541+-69 million years. This agrees within the limits of error with the isochrom ... -
Isrand-dannelser ved Atnesjøen.
(NGU (183), Journal article, 1952)Atnesjø is a lake in Central Norway, 700 m above sea level just to the SE of the Rondane mountain group. The Atnariver enters the lake from the north, and leaves at the north end, forming an affluent to the great Glomma ... -
IV. Ramsøy titanjernmalmfelt i Solør og dets differentiations- processer
(NGU (68), Journal article, 1914)Forkortet: The present paper deals with a deposit of titaniferrous iron ore in the province of Solør, in southeastern Norway, and its formation through differentition processes. The treatise may be naturally divided into ... -
IV. Litt om Jutulhugget
(NGU (79), Journal article, 1917)The Jutulhug (\"The big Troll's Notch\") is a cleft or canyon situated in the central part of Southern Norway under 62 degrees N. As our somewhat schematic drawing on p. 4 shows, it is situated in a wide saddle between the ... -
IV. Nogen bidrag til Hitterens og Smølens geologi
(NGU (69), Journal article, 1914)Forkortet: Hitra and Smøla (Map on p.6) are two rather large islands on the West coast of Norway at 63 1\/2\u00B0N. Smøla belongs entirely to the coast plain of Norway and is remarkably low and flat. A great part of Hitra ... -
IV. Svartisen. Dens geologi
(NGU (59), Journal article, 1911)Forkortet: The glacier Svartisen is, next to Jostedals glacier, the largest in Norway, and one of the largest in Europe. The arctic Circle passes through its southern part. Wherever accessible, the underlying rocks are ... -
Jernmalm og jernverk. Særlig om elektrisk jernmalm-smelting.
(NGU (85), Journal article, 1918) -
Jomaforekomstenes blokkvifter.
(NGU (200), Journal article, 1957)The Joma pyrite occurence contains some 15 million tons ore and crops out mostly under bogs with maximum ore zonewidth of 40 m. The surrounding morainic deposits have been investigated for ore boulders, in order to find ... -
Jordartregioner i Norge.
(NGU (213), Journal article, 1961)As older geological maps mainly present bedrock geology to the neglect of drift, the Geological Survey of Norway (NGU) year 1936 realized the need of a special map to supply necessary information about quaternary deposits. ... -
Jordbunden i Jarlsberg og Larviks amt
(NGU (16), Journal article, 1894) -
Jordbunden i Romsdals amt. Del 1. Den almindelige del og herrederne i søndmør
(NGU (18), Journal article, 1895)