Browsing Artikler by Title
Now showing items 520-539 of 1064
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Melt-mineral-fluid interaction in pealkaline silicic intrusions in the Oslo Rift, Southeast Norway. II. High temperature fluid inclusions in the Eikeren-Skrim.
(NGU Bulletin (417), Journal article, 1990)The Eikeren-Skrim subvolcanic granite complex consists of mildly peralkaline rocks, most of which contain abundant miarolitic cavities. Optical microscope studies reveal that several generations of fluids and solids were ... -
Melt-mineral-fluid interaction in peralkaline silicic intrusions in the Oslo Rift, Southeast Norway. I. Distribution of elements in the Eikeren ekerite.
(NGU Bulletin (417), Journal article, 1990)The behaviour of different elements during formation of the Eikeren ekerite (alkali granite) has been studied with the help of an element correlation matrix. The compositional relations are the result of partitioning of ... -
Melt-mineral-fluid interaction in peralkaline silicic intrusions in the Oslo Rift, Southeast Norway. III. Alkali geothermometry based on bulk fluid inclusion content.
(NGU Bulletin (417), Journal article, 1990)Decrepitation-linked ICP analyses of bulk fluid inclusion in quartz in 14 samples from the Sande nordmarkite (quartz syenite) and the Eikeren Skrim ekerite (alkali granite) plutonic complexes yield Na\/K ratios which suggest ... -
Melt-mineral-fluid interaction in peralkaline silicic intrusions in the Oslo Rift, Southeast Norway. IV. Fluid inclusions in the Sande nordmarkite.
(NGU Bulletin (417), Journal article, 1990)The mildly peralkaline Sande nordmarkite (quartz syenite) intrusion contains interstitial quartz and mafic minerals (alkali amphibloe, ilmenite, titanomagnetite, zirkon, sphene + calcite). Three generations of fluid ... -
Mesozoic sediments and structures onshore Norway and in the coastal zone
(NGU Bulletin (450), Journal article, 2010)In mainland Norway, Mesozoic sedimentary rocks (Jurassic and Cretaceous) outcrop only on Andøya. These are the youngest rocks on land anywhere in Norway. Triassic dykes occur in West Norway, while Mesozoic structures and ... -
Meta-andesites in the Caledonides in the Suldal area, Ryfylke.
(NGU (288), Journal article, 1973)Meta-andesites interlayered with quartz-mica schists, phyllites and tuffites of supposed Cambro-Silurain age cover an area of about 120 km2 in the Suldal area, Ryfylke. Recrystallized meta-andesites are also found in the ... -
Metallogeny of Finnmark, North Norway
(NGU Bulletin (403), Journal article, 1985)Metalliferous ore deposits and mineralisations in the county of Finnmark occur in rocks ascribed to three specific periods of geological time: 1) Archaean 2) Early Proterozoic 3) Caledonian. The only Archaean ore deposits ... -
Metamorfe og eruptive bergarter på Hitra.
(NGU (223), Journal article, 1963)The area investigated comprises the northern part of the island of Hitra with surrounding smaller islands, situated west of Trondheim, Norway. North of a line between Strømfjorden and Fillan strongly metamorphosed sediments ... -
Metamorphic petrology of the Froland corundum-bearing rocks: the cooling and uplift history of the Bamble Sector, South Norway
(NGU Bulletin (424), Journal article, 1993)Corundum-bearing rocks from Kleggåsen, Froland, preserve metamorphic textures which reflect the cooling and uplift path of the Bamble Sector. The P-T path may be correlated with a T-t path constructed from published ages. ... -
Metasedimentary rocks, associated intrusions and tectonic features of the Precambrian in eastern Bamble, South Norway: an interpretative study.
(NGU Bulletin (442), Journal article, 2004)Based on the results of mapping programmes and map compilation work carried out by the author in recent years, a subdivision of the bedrock geology of the easternmost part of the Bamble Sector into two domains is proposed ... -
Methods and stratigraphies used to reconstruct Mid- and Late Weichselian palaeoenvironmental and palaeoclimatic changes in Norway.
(NGU Bulletin (438), Journal article, 2001)A review is presented on the comprehensive stratigraphic database and the methods used for palaeoclimatic and palaeoenvironmental interpretations in Norway during the Mid- to Late Weichselian time interval. The reconstructions ... -
Microfossils from late Precambrian sediments around lake Mjøsa, Southern Norway.
(NGU (251), Journal article, 1967)Microfossils extracted with ordinary palynological methods from the Biskopås conglomerate (Biri-conglomerate) and the Biri-shale of the late Precambrian age in Southern Norway are described. Two principle categories of ... -
Micropaleontology applied to soil mechanics in Norway. Mikropaleontologi anvendt på geotekniske problemer i Norge.
(NGU (197), Journal article, 1957)A breif review of the geological history of the Late Pleistocene marine clay deposits of the Oslofjord area, southeastern part of Norway, has been given, and a stratigraphical division of these sediments, established upon ... -
Microsyenite from Lake Mykle, Oslo Rift: Subvolcanic rocks transitional between larvikite and nordmarkite
(NGU Bulletin (441), Journal article, 2003)A small body of trachyte or microsyenite cropping out east of lake Mykle in the Vestfold Graben of the Oslo Rift probably represents a subvolcanic intrusion emplaced at a fairly early stage of the intrusive history of the ... -
Mid and Late Weichselian, ice-sheet fluctuations northwest of the Svartisen glacier, Nordland, northern Norway.
(NGU Bulletin (440), Journal article, 2002)During the last decade, general Quaternary geological mapping in Nordland county, northern Norway, has provided field-data, supported by radiocarbondating, which have been used as a basis for reconstructing the palaeoclimaticand ... -
Middle and Late Pleistocene stratigraphy, chronology and glacial history in Finnmark, North Norway.
(NGU Bulletin (429), Journal article, 1996)The Pleistocene superficial deposits in Finnmark, North Norway, were investigated in about 250 excavations and drillings during the period 1960-1990. Based on this regional background data six localities on Finnmarksvidda ... -
Middle and Late Weichselian high relative sea levels in Norway: Implications for glacial isostasy and ice-retreat rates.
(NGU Bulletin (435), Journal article, 1999)Highly uplifted Middle Weichselian marine sediements at Høgjæren, SW Norway, have previously been explained by tectonic movements, glacial isostasy or a combination of these factors, whereas most recent studies seem to ... -
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 ... -
Monitoring of a tracer experiment with electrical resistivity at Haslemoen, Hedmark county, Norway
(NGU Bulletin (427), Journal article, 1995)Frie emneord: Strømretning, Strømstyrke