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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 ... -
IUGS sekretariat: vurdering og sluttrapport
(NGU-Rapport (2010.001), Report, 2010)Internasjonalt samarbeid, geologi:\rlUGS sekretariatet har spilt en meget sentral rolle i internasjonalt geofaglig nettverksarbeid og har bLa. bidratt til at land i den 3. verden har vært mer aktiv i lUGS.\rSekretariatet ... -
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 ... -
Jan Mayen Aeromagnetic Survey JAS-12 - Part A: Acquisition, processing
(NGU-Rapport (2012.069), Report, 2012)A high sensitivity aeromagnetic survey, JAS-12, was carried out in an area of 80.000 km2 east of the Jan Mayen microcontinent in the western Norway Basin. Data processing comprised spike-removal and data editing, IGRF ... -
Jan Mayen, kvartærgeologisk kart M 1:50 000
(Map, 2022) -
Jernmalm og jernverk. Særlig om elektrisk jernmalm-smelting.
(NGU (85), Journal article, 1918) -
Jernmalmen på Andørja, Ibestad kommune - vurdering av kvalitet på superslig go apatittkonsentrat.
(NGU-Rapport (99.115), Report, 1999)Det er gjort en undersøkelse for å framskaffe nye data for å kunne vurdere om jernmalmen på Andørja har spesielle fordeler for økonomisk utnyttelse. Det er gjort mineralogiske undersøkelser av malmen og av magnetitt- og ... -
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 ... -
Jondal. Berggrunnskart; Jondal; 13154; 1:50 000
(Map, 2001)