Blar i Artikler på emneord "PETROGRAFI"
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Bergartgange ved Sand i Ryfylke
(NGU (1), Journal article, 1891)Forkortet: Sand is a village on the south-western coast of Norway to the NE of the city of Stavanger. The dykes are dioritic and occur in gneiss. The principal ones are marked on the sketch-map pag. 35 and illustrated in ... -
Beskrivelse til berggrunnsgeologisk kart over strøket Agdenes- Hemnefjord, Sør-Trøndelag.
(NGU; Skrifter (299; 9), Journal article, 1974)The area consists of regional metamorphic gneisses and crystalline schists. Some of the rocks are of Cambrian-Ordovician age, others of Precambrian age. Examples on the former are flagstones (metamorphosed \"sparagmite\") ... -
Bidrag til Finmarkens geologi
(NGU (84), Journal article, 1918)The present paper is a result of investigations carried out in the most northern district of Norway, during the summers 1914-17, the total amount of time spent in Finnmark being 23 weeks. The studies have been confined to ... -
Bidrag til kundskaben om Nordlands amts geologi
(NGU (4), Journal article, 1891)Forkortet: The author, who has done most of the field work in the greater part of Nordlands amt, for the preparation of the map, gives his observations at length, illustrating them with sections. The landscape p. 168 shows ... -
Big boulders of tillite rock in Porsanger, Northern Norway.
(NGU (247), Journal article, 1967)In 1959 numerous erratic boulders of tillite rock were discovered at the head of Austerbotn, the eastern arm of the Porsangerfjord. Some of the boulders are very big, having volumes of up to 20m3. In 1965 another two ... -
Biotitt-søvitt på Stjernøy, Vest-Finnmark.
(NGU (183), Journal article, 1952)The island of Stjernøy is built up of a complex of gabbroid rocks, which in the valley of Fjellfinndalen (fig. 1) surrounds a body of chiefly calcite-biotite rock more than commonly rich in apatite, clearly of non-sedimentary ... -
Blyglansforekomst på Krækkjeheia, Hardangervidda.
(NGU (200), Journal article, 1957)A lead deposit near Krækkjeheia, Hardangervidda. This short paper presents the main results of an investigation of a galenaspalerite showing on the mountain plateau of Hardangervidda, 160 kms. west of Oslo. The sulfides ... -
Børgefjell. Beskrivelse til det berggrunnsgologiske gradteigskart J.19 - 1: 100 000
(NGU; Skrifter (298 ; 8), Journal article, 1973)Three main structural units are present: 1. The Precambrian (Svecofennokarelian) basement of the Børgefjell Window. \". Low grade (greenschist facies) Lower Paleozoic rocks belonging to the Seve-Køli Nappe Complex. 3. The ... -
Caledonian sulphide deposits and minor iron-formations from the southern Trondheim region, Norway.
(NGU (340), Journal article, 1978)Within the southern and central parts of the Trondheim region of the Norwegian Caledonides a great number of small, stratabound cupriferous pyrite deposits are confined to mafic metavolcanics of the Gula, Støren and Fundsjø ... -
Cambro-Silurian fossils in Finnmark, Northern Norway.
(NGU (213), Journal article, 1961)Underkambriske(?), mellomkambriske, overkambriske(?) og underordoviciske (tremadoc) fossiler (trilobitter, brakiopoder, graptolitter, spor og problematika) er funnet på Digermulhalvøya i Tana og silurske fossiler ... -
Chemical and petrographic characterization of ilmenite and magnetite in oxide-rich cumulates of the Sokndale Region, Rogaland, Norway
(NGU Bulletin (436), Journal article, 2000)Igneous ilmenite and magnetite in some oxide-rich cumulates of the Sokndal region show chemical features and microtextures that reflect the progress of magmatic evolution and subsolidus re-equilibration. These features ... -
Cier'te. Beskrivelse til det berggrunnsgeologiske kart 1733 II - 1:50 000 (med fargetrykt kart).
(NGU; Skrifter (331; 20), Journal article, 1977)A general description of the bedrock geology is presented. The map area has a threefold tectono-stratigraphic division. 1: The Precambrian (Sveco-karelian) besement rocks are subdivided into two complexes. The older one, ... -
Contributions to the geology of Hardangervidda (West Norway) I. An explosion-breccia occurrence in Hjølmodalen.
(NGU (247), Journal article, 1967)An occurrence of breccia, which is thought to have been formed\rby a fluidization process, is described. The breccia is supposed to be\rgenetically related to similar breccias encountered in other parts of\rthe Precambrian ... -
Correlation between the Late Precambrian Older Sandstone series of the Varangerfjord and Tanafjord areas. Preliminary report.
(NGU (266), Journal article, 1970)Sedimentary rocks belonging to the late Precambrian Older Sandstone Series (overlain unconformably by the Eocambrian-Lower Cambrian Vestertana Group) are described from the Vadsø-Komagelva area on the northern side of ... -
Dating explosive volcanism perforating the Precambrian basement in southern Norway.
(NGU (380), Journal article, 1983)K-Ar and Rb-Sr dating have been performed on various hypabyssal diatreme-facies volcanic rocks perforating the Sveconorwegian zone of the Precambrian basement in southern Norway. The dated rocks were taken from the Fen ... -
De eokambriske lag under hyolithussonen mellom Carajavrre og Caskias, Vestfinnmark.
(NGU (200), Journal article, 1957)In a previous note the author (Per Holmsen 1956, pp.- 65-72) has pointed out that the Eocambrian tillite occurs conformably below the basal beds of the \"Hyolithus-zone\" (lower Cambrian). During the summer1955 the ... -
De prekambriske bergarter i Telemark, I. Gruber og skjerp innen gradeteigkart E36V Kviteseid.
(NGU (216), Journal article, 1963)Approximately 115 mines and claims have been examined in the years 1941-1961 during regional geological mapping of the Kviteseid quadrangle. The map area covers a part of the \"Thelemark-Sætersdal ore province\" established ... -
Deformation in the Gangåsvann area.
(NGU (223), Journal article, 1963)The effects of multiple deformation on a series of banded metasedimentary rocks is described. Disharmonic folding has occurred and a slide formed during the first phase of movement separates highly folded rocks from those ... -
Dekketektonikken i den nordligste del av det Østlandske sparagmitt- område.
(NGU (188), Journal article, 1954)In the present paper a number of new observations are presented, and together with the published maps and descriptions, they form the basis of an attempt to distinguish the different tectonic units. These units form ... -
Den kaledonske fjellkjede i Norge. The Caledonian mountain chain in Norway.
(NGU (189), Journal article, 1954)The Caledonian mountain chain in Norway: One of the most important and interesting problems in Scandinavian geology is the structure of the Caledonian Mountain chain, which runs through the country from Hardanger to the ...