Browsing Artikler by Title
Now showing items 688-707 of 1064
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Petrography and metamorphism in the Precambrian rocks of the Magnor area, S. Norway.
(NGU (246 A), Journal article, 1967)The rocks of the Magnor area comprise various red and grey gneisses, amphibolites and red, unfoliated granites. The gneisses and amphibolites most probably were sediments and basic intrusives, respectively, metamorphosed ... -
Petrography and structural history of the Caledonian rocks north of Haukelisæter, Hardangervidda.
(NGU (314), Journal article, 1974)The main features of the geology of the Caledonian nappe front north of Haukelisæter are described. The Precambrian basement in this area is overlain by an autochthonous\/parautochthonous sequence in the east and by ... -
Petrography of the Gula Group in Hessdalen, Southeastern Trondheim region, with special reference to the paragonitization of andalusite pseudomorphs.
(NGU (304), Journal article, 1974)Al-rich pelites from Hessdalen, SE Trondheim region, Central Norway, belonging to the Cambrian Gula Group, are described petrographically. The schists carry abundant porphyroblasts of staurolite, garnet, kyanite and ... -
Petrography of the Levang Peninsula (Kragerø, Norway).
(NGU (157), Journal article, 1942)An area within the archean Bamble formation, southern Norway, has been mapped. A description of the rock types occuring in the area is given. The Levang oligoclase granite in the southern part of the mapped area is surrounded ... -
Petrological studies of the Neiden granite complex.
(NGU (237), Journal article, 1966)The Neiden granite complex fits well into Raguin's group of \"anatectic granites with suites of migmatites\". In this area, supracrustals of the Bjørnevatn group have, together with their gneissgranitic basement, been ... -
Petrology and geochemistry of high-grade metamorphic and igneous rocks on Langøy, northern Norway.
(NGU (207), Journal article, 1960)The rocks on Langøy have been considered as representing an igneous rock series including metamorphic sedimentary rocks of \"Caledonian type\". The present work shows that they are for the most part high-grade metamorphic ... -
Petrology and isotope geology of the Hunnedalen Monzonoritic Dyke Swarm, SW Norway: a possible late expression of Egersund Anorthosite magmatism
(NGU Bulletin (434), Journal article, 1998)The widest and northernmost dyke of the post-tectonic Late Proterozoic Hunnedalen Monzonoritic Dyke Swarm has been studied petrographically, chemically (major and trace element) and isotopically (Rb-Sr; Sm-Nd; K-Ar) toghether ... -
Petrology and metallogeny associated with the Tryvann Granite Complex, Oslo Region.
(NGU Bulletin (423), Journal article, 1992)The Tryvann Granite Complex (TGC) comprises four separate intrusive bodies within the Oslo Graben. It constitutes a differentiated suite of young (240- 245 Ma) alkaline quartz syenites and granites derived from a strongly ... -
Petrology of differential gabbro sheets in the Altenes tectonic window, North Norway.
(NGU Bulletin (414), Journal article, 1989)The petrography of two differentiated gabbro sheets in the low-grademetamorphic Karelian supracrustal sequence of the Altenes Tectonic Window isdescribed. The intrusion have generally undergone extensive deuteric alter-ation. ... -
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 ... -
Petrology, geochemistry and genesis of the type area trondhjemite in the Trondheim Region, Central Norwegian Caledonides.
(NGU (351), Journal article, 1979)Trondhjemite from the Follstad district of the Trondheim region is present within allochthonous Lower Paleozoic eugenosynclinal and partly miogeosynclinal rocks of the Caledonide orogen. Four periods of trondhjemite intrusive ... -
Planktonic, acid-resistant microfossils from Upper Proterozoic strata of the Barents Sea Region of Varanger Peninsula, East Finnmark, Northern Norway.
(NGU (382), Journal article, 1983)Planktonic, acid-resistent microfossils (acritarchs) occur in the Kongsfjord, Båsnæring and Båtsfjord Formations of the Barents Sea Group and in the Styret Formation of the Løkvikfjell Group. Two new taxa are described and ... -
Platina i sulfidisk nikkelmalm.
(NGU (137), Journal article, 1932)Im Auftrag der Geologischen Landesanstalt wurde eine Reihe von Erzvorkommen in den Ofoten- und Grong-gebieten, die neulich geologisch kartiert sind, auf ihr Edelmatallgehalt analysiert. Die Analysen wurden im Laboratorium ... -
Pleistocene and recent sediments of the Norwegian Continental Shelf (62°N-71°N), and the Norwegian Channel area.
(NGU (316), Journal article, 1975)The surface sediments covering the area under consideration can be divided into 4 groups: 1. Till, mainly composed of material derived from the adjacent mainland. 2. Till, mainly containing material derived from Mesozoic-Tertiary ... -
Pollen-meteoritten. Et nytt funn av meteoritt i Norge.
(NGU (223), Journal article, 1963)A description of a carbonaceous chondrite of type II, Wiik (1956) fallen 6th april 1942 in Northern Norway (66\u00B020.9`N lat.-14\u00B00,9`E long. Gr.) is given. Weight: 253.6 gram, density 2.574, largest dimensions: 7,9 ... -
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 ...