Browsing Artikler by Subject "METODE"
Now showing items 1-20 of 22
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A turbidimetric method for the determination of small amounts of sulphur in limestone and dolomite.
(NGU (270), Journal article, 1971)It has been observed thaat on applying the combustion method to the determination of small amounts of sulphur in limestone and dolomite the bulk of sulphur may remain in the sample when no oxygen stream is used, and that ... -
Change in chemical composition of rock samples during preparation for analysis.
(NGU (300), Journal article, 1973)It has been shown that up to 3% of the volume of rock samples may escape as clust during their preparation (crushing and grinding) for chemical analysis. The mineral and chemical composition of the escaping rock dust may ... -
Determination of major and trace elements in rocks employing optical emission spectroscopy and X-ray fluorescence.
(NGU (322), Journal article, 1975)An optical emission spectrometric method for major element determination and an X-ray fluorescence method for the determination of trace elements are described. The first method combines a tape machine with a direct reader ... -
Elektrisk metalsmelting. Forsøk og undersøkelser utført ved marinens torpedo- og minefabrik i samarbeide med Statens Raastofkomite
(NGU (104), Journal article, 1922)Preliminary tests have been gone through with: 1. Arcfurnaces. 2. Resistance- furnaces. 3. Inductionfurnaces. 4. Electrically heated crucibles. The last type was chosen for tests on a technical scale, two 200 lbs. furnaces ... -
Evaluation of geophysical methods for the delineation of bedrock fractures - a case history from Utengen, Hvaler, southeastern Norway
(NGU Bulletin (427), Journal article, 1995) -
Fotogeologi
(NGU (205), Journal article, 1959)The use of air photos for geological interpretation is described. A short introduction to photogrammetry is given, and the types of instruments useful for photogeology are mentioned. -
Groundwater pesticide vulnerability: comparing simple assessment methods.
(NGU Bulletin (434), Journal article, 1998)Residues of pesticides are found in drinking water and groundwater, in fact all compartments of the water cycle. Should we protect our water sources better, and if so, how? Four methods have been applied to assess the ... -
Ildfaste oksyders fysikalske kemi. Oversigt over nyere præcisions- undersøkelser
(NGU (101), Journal article, 1922)In the present paper an attempt is made to summarize briefly the most reliable results of recent high temperature investigations of refractory oxides. As practically all the exact work in this field is done at the Geophysical ... -
Lead isotope determinations by inductively-coupled plasma mass spectrometry (ICP-MS): potential of sector field instruments
(NGU Bulletin (436), Journal article, 2000)Lead isotope measurements have been carried out using a high-resolution inductively-coupled plasma mass spectrometry (Finnigan MAT ELEMENT, configurated with CD-1 option) The method can be applied to all types of geological ... -
Mikropaleontologiens teknikk.
(NGU (203), Journal article, 1958)Technique of micropaleontology: The article describes the treatment of Formanifera samples from Norwegian Late Pleistocene marine clays. The samples is collected with a thin-wall, stationary piston samper with entrance ... -
Mineral characterisation of industrial mineral deposits at the Geological Survey of Norway: a short introduction
(NGU Bulletin (436), Journal article, 2000)Mineral characterisation involves the study of minerals in terms of their size, habit, chemical composition, morphology, textural position, association and other attributes. There is an established and increasingly important ... -
Om fremstilling av bariumlegeringer
(NGU (107), Journal article, 1922)Die Abhandlung erh\u00E4lt die Resultate einer Untersuchung \u00FCber die Darstellung von Baryumlegierungen, speciel Baryumblei. Die Untersuchung wurde durch das Rohstoffkomite des Staates unter dem Vorsicht des Verfassers ... -
Om torvmyrer i Norge og deres tilgodegjørelse. Første del
(NGU (20), Journal article, 1896)Forkortet: 1. The method of investigation. Maps of the mosses are made to the scale of 1:5000 and printed in the scale of 1:20 000. The depths are stated by borings, and specimens from the different layers studied. The ... -
Om vegetationsforsøk med glimmermineralerne biotit og sericit som kalikilde
(NGU (114), Journal article, 1922)Im Voranstehenden wird \u00FCber Vegetationsversuche berichtet, die auf Veranlassung des Rohstoffkomitees des norwegischen Staates im botanischen Institut der landwirtschaftlichen Hochschule Norwegens diesen Sommer vorgenommen ... -
Origin of plagioclase-megacrysitic, orthopyroxene amphibolites within a Precambrian banded gneiss suite, Flekkefjord area, Vest-Agder, South Norway.
(NGU Bulletin (438), Journal article, 2001)Within a banded gneiss suite belonging to the high-grade Mesoproterozoic Flekkefjord complex in southern Norway, thin lenses of orthopyroxene amphibolites with medium- to large-size plagioclase megacrysts are located at ... -
Petrology of the Grimstad granite II. Petrography, geochemistry, crystallography of alkali feldspars and genesis.
(NGU (265), Journal article, 1970)The Precambrian Grimstad granite, South Norway, has been studied by petrographical, chemical and x-ray crystallographical analysis. It has a semi-circular outline and is partly rimmed by an agmatite. Eight different rock ... -
Statistisk beskrivelse av geokjemiske data.
(NGU; Skrifter (285; 3), Journal article, 1973)A manual procedure for the organization of geochemical observations into frequency distributions is described. When frequency distributions of geochemical exploration data are plotted on logarithmic probability paper, more ... -
Testing of multispectral scanner data for prospecting of ferro-eclogite in the Førdefjord area, western Norway
(NGU Bulletin (436), Journal article, 2000)The present investigation aimed to determine remote sensing data can be used in future prospecting for rutile-bearing eclogite. A preliminary study was carried out to establish if the method is suitable for distinguishing ... -
Thermal conductivities of some ores and rocks in Norway.
(NGU (300), Journal article, 1973)Thermal conductivities of 61 diamond core smples are given. Most of the samples are from the Joma pyrite deposit and its neighbouring rocks. The measurements from Joma show that there is a very high conductivity in compact ...