Browsing Artikler by Title
Now showing items 704-723 of 1064
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Polyphase Caledonian metamorphism in the Precambrian basement of Rogaland/Vest-Agder, SW Norway.
(NGU (380), Journal article, 1983)In the Sveconorwegian basement of Rogaland\/Vest-Agder, SW Norway, two incipient Caledonian metamorphic overprints are assumed on the basis of petrological textures and regional extension of the metamorphic mineral ... -
Porphyritic syenite at Lake Mykle, the Oslo Rift - a possible derivative of larvikite.
(NGU Bulletin (442), Journal article, 2004)New Rb-Sr and Sm-Nd isotope data on porphyritic syenite from lake Mykle in the southern part of the Oslo Rift confirm a close compositional and genetic relationship and genetic relationship between this rock and the ... -
Possible Mesozoic mantle plume activity beneath the continental margin of Norway.
(NGU (322), Journal article, 1975)Based on recent geological and geophysical information from the Norwegian\/Greenland Sea and North Sea areas, and on earlier geomorphological information interpreted in terms of regional drainage pattern evolution, it is ... -
Possible Mesozoic sediments in fault and breccation zones in Frøyfjorden, Mid Norway
(NGU Bulletin (443), Journal article, 2005)The 5.3 km long Frøya Tunnel beneath Frøyfjorden, Central Norway, links the islands of Hitra and Frøya and passes through a major zone of faulting and breccation which parallels the Møre-Trøndelag Fault Complex. Faults and ... -
Post-Sveconorwegian exhumation and cooling history of the Evje area, southern Setesdal, Central South Norway
(NGU Bulletin (431), Journal article, 1996)Fission track (FT) dating of apatite and sphene from monzonitic dyke rocks in a Middle to Late proterozoic intrusion from the Setesdal region, southern Norway, indicates cooling from intrusion temperatures of the surroundings ... -
Praktisk-geologiske undersøgelser af Nordlands amt. I. Salten og Ranen med særlig hensyn til de viktigste jernmalm- og svovelkis-kobberkis- forekomster samt marmorlag
(NGU (3), Journal article, 1890)Forkortet: Die vorliegende Abhandlung erscheint als erster Theil einer geologischen Bescreibung von Nordland Amt, mit besonderer R\u00FCcksicht auf die wichtigsten Marmorlager und Erzlagerst\u00E4tten (von Eisenerz, ... -
Praktisk-geologiske undersøkelser af Nordlands amt II. Dunderlands- dalens jernmalmfelt (i Ranen, Nordlands amt, lidt søndenfor polar- kredsen)
(NGU-Rapport (15), Journal article, 1894)Forkortet: Diese Abhandlung erscheint als zweiter Theil einer geologischen Beschreibung von Nordlands Amt; in der hier vorliegenden Fortsetzung sind die Eisenerz-Vorkomnisse, namenlich im Dunderlandsthale in Mo i Rana, ... -
Precambrian and Caledonian tectonometamorphic evolution of Northeastern Seiland, Finnmark, North Norway.
(NGU (373), Journal article, 1982)The metamorphic rocks of northeastern Seiland are predominantly Precambrian gneisses and schists. The Fagervik infracrustal complex, composed of tonalitic gneisses, constitutes a basement to the Late Precambrian-Cambrian ... -
Precambrian stratigraphy in the Masi area, southwestern Finnmark, Norway.
(NGU (380), Journal article, 1983)The rocks in the Masi area consists of a comformable stratigraphic sequence containing three formations. The lowest is the Gål'denvarri formation, mainly containing metamorphic basic volcanics. Above this is the Masi ... -
Preliminary investigations of some Ordovician volcanics from Stord, West Norway.
(NGU (327), Journal article, 1976)Later Ordovician volcanics on Stord, W. Norway, comprise alkaline rhyolite flows and ignimbrites, and ferro-basalt (icelandite) and basaltic andesite lavas. The latter are hy-normative, \"evolved\" rocks rich in residual ... -
Preliminary U-Pb geochronology in the West Troms Basement Complex, North Norway: Archean and Palaeoproterozoic events and younger overprints.
(NGU Bulletin (441), Journal article, 2003)This paper reports new U-Pb ages for zircon and titanite in four magmatic units of the West Troms Basement Complex. A granite, present as a megalens within the NNW-trending Senja Shear Belt at the southwestern tip of ... -
Present uplift rates and groundwater potential in Norwegian hard rocks
(NGU Bulletin (426), Journal article, 1994)The postglacial isostatic uplift of Fennoscandia is here regarded as the most important factor in keeping fractures open for groundwater flow in Norwegian hard rock aquifer. The present rate of uplift is assumed to represent ... -
Provenance and sediment routing of Neoproterozoic formations on the Varanger, Nordkinn, Rybachi and Sredni peninsulas, North Norway and Northwest Russia: a review
(NGU Bulletin (452), Journal article, 2012)Provenances and sediment routing of Neoproterozoic, mainly low-grade, sedimentary successions on four large peninsulas in Northeast Norway (Varanger and Nordkinn) and Northwest Russia (Rybachi and Sredni) have been assessed ... -
Prøver med en hærdeovn for kulstofstaal. Wild Barfield's patent: forsøk og undersøkelser utført ved marinens torpedo- og minefabrik i samarbeide med Statens Raastofkomite.
(NGU (118), Journal article, 1923)The first pages are devoted to a brief description of the phenomena upon which the hardening process of steel is based. Hardening temperatures are quoted and the magnetic conditions in steel are roughly described and ... -
Pseudotachylit fra de kaledonske skyvesoner i Jotunheimens forgårder, Gudbrandsdalen, og deres dannelsesbetingelser
(NGU (184), Journal article, 1953)The old tourists thought of the district as an anterior court to the Jotunheim mountainrange, and this designation also applies in a geological sense. We here find exposed the basement parts in front of the heavy thrust- ... -
Quantitative hardrock hydrogeology in a regional scale
(NGU Bulletin (439), Journal article, 2002)In the hydrogeological characterisation of an area, two quantitative aspects are to be taken into account, namely the geological setting that defines the geometry and anatomy of a hydrogeological environment, and the spatial ... -
Quaternary palaeosols in Norway - examples from selected areas
(NGU Bulletin (427), Journal article, 1995) -
Radioaktiv stråling i anlegg i fjell.
(NGU (211), Journal article, 1960)I forbindelse med anlegg i fjell har spørsmålet om radioaktiv stråling i slike anlegg kommet opp. Spørsmålet diskuteres ut fra generelle teorier og egen erfaring. Oppmerksomheten søkes henledet på det problemet som radon ... -
Radioaktivitetsundersøkelse av bergartsprøver i magasinene på Mineralogisk geologisk museum, Universitetet i Oslo.
(NGU (213), Journal article, 1961)The radioactivity of 5813 specimens from about 25% of the ore deposits registered by Foslie in NGU nr. 126, 1925, have been measured by gamma-scintillation-counter. Anomalies have been found in specimens from about 40 ... -
Radiocarbon dates from the mountain area northeast of Årdal, southern Norway, evidence for a Preboreal deglaciation.
(NGU Bulletin (418), Journal article, 1990)Radiocarbon dates obtained on macrofossil plant remains (mainly Betula nana-sticks and mosses) and basal gyttja from a kettle hole at the outlet of Berdalsvatn 1017 m a.s.l. northeast of rdal, inner Sogn, yielded ages of ...