Browsing Artikler by Title
Now showing items 999-1018 of 1064
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U-Pb age dating and paleotectonic significance of trondhjemite from the type locality in the Central Norwegian Caledonides
(NGU Bulletin (437), Journal article, 2000)Zircon and titanite U-Pb data are reported from the trondhjemite type locality at Follstad, near Støren in Central Norway. A concordant fraction of aricular zircon and an overlapping fraction of titanite give an age of ... -
U-Pb geochronology and geochemistry of trondhjemites and norite pluton from the SW Trondheim Region, Central Norwegian Caledonides
(NGU Bulletin (441), Journal article, 2003)Zircon analyses from two trondhjemites and a biotite norite from a part of the southwestern Trondheim Region have yielded almost identical Early Silurian ages. The biotite norite and one of the trondhjemites, from a quarry ... -
U-Pb zircon age of 469 +- 5 Ma for a metatonalite from the Kjosen Unit of the Lyngen Magmatic Complex, northern Norway
(NGU Bulletin (428), Journal article, 1995)Two fractions of zircon from a tectonised tonalite from within metagabbro of the Kjosen Unit of the Lyngen Magmatic Complex give a concordant U-Pb age of 469 +- 5 Ma. This is interpreted as a minimum age for the Kjosen ... -
U-Pb zircon age of a dolerite dyke from near Hamningberg,Varanger Peninsula, North Norway, and its regional significance
(NGU Bulletin (432), Journal article, 1997)A dolerite dyke cutting very low-grade metasedimentary rocks of the Løkvik- fjellet Group near Hamningberg, NE Varanger Peninsula, Finnmark, has yielded a U-Pb zircon upper intercept age of 567,1 +30\/23 Ma. This ... -
U-Pb zircon age of the Møklevatnet granodiorite, Gjersvik Nappe, Central Norwegian Caledonides
(NGU Bulletin (421), Journal article, 1991)The Møklevatnet granodiorite in the Gjersvik Nappe has yielded a U-Pb zircon age of 456 +- 2MA from three, concordant, mulitigrain fractions. This can also be regarded as a maximum age, Early Middle Caradoc, for the oldest ... -
U-Pb zircon ages of a tonalite and a granodiorite dykefrom the southeastern part of the Bindal Batholith,central Norwegian Caledonides
(NGU Bulletin (446), Journal article, 2006)An elongate tonalite pluton and a c.10 m-thick granodiorite body in the southeastern part of the Bindal Batholithand Helgeland Nappe Complex, Nord-Trøndelag, have yielded U-Pb zircon ages of 429 \u00B12 and 430 \u00B12 Ma, ... -
Undersøgelse af nogle torvprøver
(NGU (14), Journal article, 1894)The samples were collected in Smaalenene and in the district of Romerike to the North-East of Kristiania. The author has studied chiefly the species of mosses. -
Undersøkelser av steinfraksjonens rundingsgrad i glasigene jordarter.
(NGU (266), Journal article, 1970)The main bulk of the stone material in Norway has undergone only one or a few transport phases. A classification has been made for the deposits in the interior of Eastern Norway on the basis of the degree of roundness of ... -
Undersøkelser over bituminøse kul fra Spitsbergen og Andøen.
(NGU (111), Journal article, 1922)(forkortet) Im Anschluss an die voran referierte untersuchung von Kings-Bay- Kohlen wurden Kohlen und \u00DAlschiefer von Insel Andøen in derselben Weise untersucht. Diese Kohlen sind sehr eigent\u00FCmlich, bei einem ... -
Undersøkelser over norske lerer I
(NGU (115), Journal article, 1923)In this little pamphlet are given some results obtained on Norwegian clays. The work, which was undertaken by \"Statens Raastofkomite\", commenced in 1922. The clays have been examined systematically, and the methods used ... -
Undersøkelser over norske lerer II. Norske lerforekomster: A. Østfold, Buskerud, Vestfold, Telemark, Aust-Agder, Vest-Agder, Rogaland, Hordaland.
(NGU (116), Journal article, 1923)This essay can be regarded as a description of samples of Norwegian clays, collected by the author during 6 weeks in the summer of 1922, for the purpose of investigations in the laboratories of \"Statens Raastofkomite\". ... -
Undersøkelser over norske lerer III
(NGU (119), Journal article, 1923)In this publication are given the results of a series of special investigations regarding Norwegian clays that were carried out by the State Raw Materials Commitee in the autumn of 1922 and spring of 1923. Pages 6-11 deal ... -
Undersøkelser over norske lerer IV. Norske lerforekomster: B. Møre Sør-Trøndelag, Nord-Trøndelag, delvis Nordland samt resterende del av Akershus, Hedmark og Buskerud fylker.
(NGU (120), Journal article, 1924)The present paper is a sequel to the \"Norwegian Clay Deposits A\". Statens Raa- stofskomites Publikation No. 16 (The State Raw Material Commitee Publication No. 16) by the same author and is chiefly a description of the ... -
Upper Palaeozoic lithostratigraphy of the Southern part of the Norwegian Barents Sea
(NGU Bulletin (444), Journal article, 2005) -
Uran i kambrisk alunskifer i Oslofeltet og tilgrensende områder.
(NGU (203), Journal article, 1958)Investigations of the black Alum shales in the Oslo Region initiated the systematical prospecting for uranium in Norway. The Alum shales is a black shale formation in the Cambrian system in Southern Norway. The outcrops ... -
Uran og thorium i Norge.
(NGU (250 A), Journal article, 1967)In this short publication is mentioned what we today know on uranium and thorium in Norway. U occurs accessory in gneisses and granites, dispersed in Cambrian shales, associated with quartz and calcite in brecciated zones, ... -
Uranundersøkelser i Trøndelag.
(NGU (205), Journal article, 1959)Undersøkelsen av radioaktivitet i den sedimentære og effusive lagrekken i Trøndelag førte ikke til oppdagelse av noe lag med høyere uran-thoriuminnhold enn normalt for slike bergarter. Det ble ikke funnet noen uranrikning ... -
Urban geochemistry in Trondheim, Norway
(NGU Bulletin (438), Journal article, 2001)The chemical composition of urban surface soil in Trondheim, Norway, has been mapped to serve a two-fold purpose.\r1.) To assess whether stack-emissions from industrial sites, incinerators and crematoria as well as road ... -
Utgliding av jernbanefylling ved Kolbotn stasjon.
(NGU (166), Journal article, 1946)This station lies on the Østfold railway, 13 km from Oslo. One day in November 1936 a 4 m high newly built ballast with the rails on it suddenly sunk into a ground consisting of peat and a weak clayey deposit. Over a ... -
Utilisation of sillimanite minerals, their geology, and potential occurrences in Norway - an overwiev
(NGU Bulletin (436), Journal article, 2000)The aluminium-silicate polymorphs sillimanite, andalusite and kyanite decompose to a mixture of mullite and silica glass during calcination. Mullite is an essential component of high-alumina refractories forming the inner ...