Blar i NGU-publikasjoner på tittel
Viser treff 43-62 av 7131
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A new gravity data set from Svalbard and the adjacent sea areas: Processing report
(NGU-Rapport (94.082), Report, 1993) -
A new occurrence of gabbro in the Oslo Rift, South Norway
(NGU Bulletin (441), Journal article, 2003)Xenoliths made up of an assemblage of gabbro, diorite and biotite monzonite in syenite and granite and veined by these rocks have been found within a small area at the south end of lake Mykle in the southern part of the ... -
A new Rb-Sr isotopic parameter for metasomatism, At, and its application in study of pluri-fenitized gneisses around the Fen ring complex.
(NGU Bulletin (445), Journal article, 2005)Emplacement of the Fen peralkaline-carbonatitic ring complex 583 Ma ago in the c. 1105 Ma old Telemark gneisses caused mineralogical, chemical and Sr-isotopic changes, i.e., fenitization, in the country rocks. Fenitization ... -
A note on the sulphur composition of chalcopyrite and pyrrhotite from the Moskogaissa mines, Birtavarre, Troms.
(NGU (203), Journal article, 1958)Under et besøk i Oslo sommeren 1956 var prof. A.M. Bateman (Yale Univ., USA) så vennlig a tilby å gjøre en bestemmelse av det stabile svovelisotop-forholdet i prøver fra Birtavarre. Håpet var at en slik bestemmelse kanskje ... -
A petrographical and structural study of the rocks around the Peridotite at Engenbræ, Holandsfjord, Northern Norway. Bjergartene omkring peridotiten ved Engenbræen, Holandsfjord.
(NGU (191), Journal article, 1955)This study is a continuation of the work carried out by S. Skjeseth and the writer in 1952. The present paper only deals with an extremely well-exposed surface 1 km square in front of the retreating Engenbræ glacier. This ... -
A possible basement to the Mesoproterozoic quartzites on Hardangervidda, South-Central Norway: zircon U-Pb geochronology of a migmatitic gneiss
(NGU Bulletin (437), Journal article, 2000)On Hardangrvidda west of the Mandal-Ustaoset fault zone in South Norway, some 80-90% of the crust consists of orthogneisses and foliated and massive granites in this plutonic environment the Mesoproterozoic quartzites of ... -
A post-Caledonian ultrabasic biotite lamprophyre dyke of the island Ytterøy in Trondheimsfjord, Norway.
(NGU (215), Journal article, 1962)A lamprophyre having pronounced alnøitic - kimberlitic affinities is described. It is suggested that the intrusion of the dyke is connected with Permian rift faulting. -
A preliminary account of the geochemistry and ore mineral parageneses of some Caledonian basic igneous rocks from Sørøy, northern Norway.
(NGU (234), Journal article, 1965)The intrusion of the Storelv and Breivikbotn gabbros into metasediments on the island of Sørøy took place during the late stages of the first phase of Caledonian folding (F1). Both gabbros were then affected by almandine ... -
A preliminary account of the geology of the Signaldalen-Upper Skibotndalen area, Inner Troms, N. Norway.
(NGU (247), Journal article, 1967)A preliminary account of the petrography, stratigraphy and structure of an area at the Caledonian front in inner Troms, N. Norway, is given. Precambrian autochthonous gneisses are overlain by autochthonous and par-autochthonous ... -
A preliminary note on the geology of the area between Altevatn and Målselv, Indre Troms, N. Norway.
(NGU (247), Journal article, 1967)An area of approx. 1,600 square kilometres in Indre Troms, N. Norway, has been geologically mapped. The area is built up of 1)granites and migmatites of the basement, overlain by 2)non-metamorphic sediments of the Hyolithus ... -
A preliminary study of Lofoten as a potential World Heritage Site based on natural criteria
(NGU-Rapport (2005.086), Report, 2005)(Forkortet)\rThe geology of the Lofoten region has been described with the aim of assessing whether or not the area would qualify as a candidate for the World Heritage List based on its natural properties.\rThe Lofoten ... -
A probable Permian hydrothermal alteration age for a quartz syenite dyke from Stabben, Nordmøre.
(NGU Bulletin (432), Journal article, 1997)A Rb-Sr whole-rock isochron from a quartz-syenite dyke at Stabben, Nordmøre, has provided an age of 263 +- 6Ma. This could be taken to indicate a crystallisation age for the dyke, i.e. Early Permian. The age, however, does ... -
A proposed deglaciation chronology for the Trondheimsfjord area, Central Norway.
(NGU (373), Journal article, 1982)Radiocarbon datings of the deglaciation of the Trondheimsfjord area strongly suggest that the coastal areas and the outer part of the fjord were deglaciated before 11000 B.P. During early Younger Dryas the inland ice ... -
A Rb-Sr investigation of illite-forming events in diagenesis-grade Neoproterozoic shales, Varanger Peninsula, North Norway
(NGU-Rapport (96.154), Report, 1996)In this report we present evidence for the occurrence of at least two generation of authigenic illite in diagenesis-grade Upper Riphean and Vendian shales of the Stangenes, Nyborg and Stappogiedde Formations, Varanger ... -
A regional study of the dimension-stone potential in labradorite- bearing anorthositic rocks in the Rogaland Igneous Complex
(NGU Bulletin (427), Journal article, 1995) -
A rift-related mafic dyke swarm in the Corrovarre Nappe of the Caledonian Middle Allochthon, Troms, North Norway, and its tectonometamorphic evolution
(NGU Bulletin (419), Journal article, 1990)Forkortet. The Corrovarre Nappe is the highest tectonic unit of the Kalak Nappe Complex, in the Caledonian Allochthon, in the Nordreisa area of Troms, North Norway. The nappe consists of meta-arkoses, metapellites and ... -
A section across the Norwegian Caledonides; Bodø to Sulitjelma.
(NGU (260), Journal article, 1969)Between coastal regions near Bodø and the relatively well-known Sulitjelma area on the Norwegian-Swedish border a number of metasedimentary sstructural units have been distinguished lying above an apparently region-wide ... -
A software tool to rotate geographic themes on the surface of the sphere (Earth) for ESRI's ArcMAP
(NGU-Rapport (2005.058), Report, 2005)Movement of the Earth's plates through geological time can be described in therms of a series of rotations on the sphere (Earth). If we can determine what these rotations have been, we can rotate ancient geological ... -
A software tool to rotate spatial data on the surface of the sphere (Earth) for Geosoft's Oasis Montaj
(NGU-Rapport (2005.057), Report, 2005)Movement of the Earth's plates through geological time can be described in therms of a series of rotations on the sphere (Earth). If we can determine what these rotations have been, we can rotate ancient geological ... -
A structural, stratigraphic and petrologic study of anorthosites, eclogites and ultramafic rocks and their country rocks, Tafjord area, western South Norway.
(NGU (332), Journal article, 1977)The Tafjord area of the central basal gneiss region contains Caledonized metamorphic rocks divided into two groups. The 1000 m.y. old Fetvatn Geniss is a homogeneous zone of granodioritic gneiss that was intruded as part ...