Blar i Artikler på emneord "KALEDONSKE FJELLKJEDE"
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Geochemistry of mafic dykes in the Corrovarre Nappe, Troms, North Norway
(NGU Bulletin (419), Journal article, 1990)Tholeiitic metadolerite dyke rocks in the Corrovarre Nappe of the Kalak Nappe Complex in North Troms show chemical traits which indicate T-MORB affinities, with fairly flat, chondrite-normalised REE patterns in a (La\/Nb)N ... -
Geological setting of the Pb-Zn-Cu mineralization in the Mjønesfjell area Nordland, northern Norway
(NGU Bulletin (420), Journal article, 1990)The sediment Pb-Zn-Cu mineralization in the Caledonides of the Mjønesfjell area, Nordland, northern Norway has been mapped and sampled in detail as a basis for structural and geochemical studies of the mineralizations and ... -
Geology and K/Ar chronology of the Målvika scheelite skarns, Central Norwegian Caledonides.
(NGU Bulletin (424), Journal article, 1993)Skarns present on the northern shore of Tosenfjord overprint the S2 fabric of the adjacent gneiss (which formed during peak regional metamorphism). Together with petrographic evidence of the late crystallization of sheelite, ... -
Geology and metamorphic evolution of the Roan area, Vestranden, Western Gneiss Region, Central Norwegian Caledonides.
(NGU Bulletin (413), Journal article, 1988)Forkortet.In the gneiss area of northern Vestranden, kilometre-scale upright domes andbasins refold tight and isoclinal folds of banded amphibolite facies ortho-gneisses and supracrustal rocks. In the Roan area, a major ... -
Geology and petrochemistry of the Smøla-Hitra Batholith, Central Norway.
(NGU Bulletin (416), Journal article, 1989)The plutonic rocks which compose the Smøla-Hitra Batholith (SHB) cover an exposed area of c.1000 km\u00B2 and intrude folded, Arenig-Llanvirn, low-grade meta-sedimentary and bimodal metavolcanic rocks and higher-grade ... -
Geology and structure of Gjerby, Nordland.
(NGU (370), Journal article, 1981)The island of Gjerøy is made up of acid gneisses with subordinate mixed gneisses which are tightly interfolded with banded gneisses and associated metasediments. The early tight folds are refolded to produce a large-scale ... -
Geology and structure of the Beito Window, Valdres.
(NGU (327), Journal article, 1976)Three groups of Caledonian nappes sit directly on Precambrian gneisses. The lowest nappe consists of generally upward-facing parautochthonous or allochthonous Cambro-Ordovician quartizites and phyllites. The middle nappe ... -
Geology and structure of the Bjøllånes area, Rana, Nordland.
(NGU (343), Journal article, 1978)The field relationships of rock groups of three tectonic units from the area west of the Lønsdalen basal massif are outlined and the lithologies and mineral assemblages are described. Chemical analyses of marbles and ... -
Geology of the Minor Bergen Arc, West Norway.
(NGU Bulletin (416), Journal article, 1989)Detailed mapping of the Minor Bergen Arc has revealed the presence of a variety of highly deformed rocks of different origin and age. Three rock units have been separated and named. The Nordåsvatn Complex comprises deformed ... -
Geology of three dioritic plutons in Velfjord, Nordland.
(NGU Bulletin (423), Journal article, 1992)Dioritic plutons in the Velfjord area of Nordland intrude calc-silicates and migmatitic pelites of the Helgeland Nappe Complex (HNC). The three largest plutons were emplaced in a zone of NNW-SSE regional strike rather than ... -
High-temperature ultramafic complexes in the North Norwegian Caledonides: I - Regional setting and field relationships.
(NGU Bulletin (405), Journal article, 1986)Forkortet.Four major (25-100 km\u00B2) ultramafic complexes were developed in the Sørøy Nappeduring the second phase of Finnmarkian deformation in the North NorwegianCaledonides. They were emplaced into layered mafic ... -
Isotope geochronology of the Eidfjord Granite, Hardangervidda, West Norway.
(NGU (327), Journal article, 1976)The Eidfjord Granite has a 7-point whole-rock Rb-Sr isochron age of 931 +- 35 Ma with initual 87Sr\/86Sr = 0.7058 +- 0.0028 (50.0 X (10)9 year 87Rb half life; errors at 95 per cent confidence level). Two separated biotites ... -
Kentallenite (olovine-monzonite) in Bindal, Central Norwegian Caldonides.
(NGU Bulletin (413), Journal article, 1988)A rock-type identified as kentallenite is reported from the southwestern partof the Helgeland Nappe Complex, Central Norway. The kentallenite is ahypabyssal rock and belongs to a suite of appinitic mafic dykes and smallstocks ... -
Late Precambrian stratigraphy and structure of the north-eastern margin of the Fennoscandian shield (East-Finnmark - Timan Region).
(NGU (316), Journal article, 1975)Later Precambrian (Riphean and Vendian) rocks occur along the north-easternb margin of the Fennoscandian Shield and the Russian Platform in Three zones: 1) the Varanger-Kildin, 2) the Timan-Kanin and 3) the Southern Barents ... -
Marginal basin type metavolcanites of the Hersjø Formation, eastern Trondheim District, Central Norwegian Caledonides.
(NGU Bulletin (412), Journal article, 1988)Forkortet.The more than 300 km long greenstone belt of the eastern Trondheim districtin the Caledonian Upper Allochthon displays considerable heterogeneity inlithology as well as metavolcanite geochemistry. A largely ... -
Mosjøen. Beskrivelse til det berggrunnssgeologiske gradteigskart I 17 1 : 100 000.
(NGU; Skrifter (307; 12), Journal article, 1974)Description are given of the various lithologies occurring within the map area. These mainly comprise Cambro - Silurian supracrustals and intrusive, as well as granitic basement rocks of supposed Precambrian age. The ... -
Multiple folding in the Sørfinnset area of Northern Norway.
(NGU (262), Journal article, 1970)120 km\u00B2 of the Norwegian Caledonides have been mapped on aerial photographs on a scale of approximately 1:15 000. Detailed correlation between the folded schist successions has enabled the effects of the earliest ... -
Nappe and thrust structures in the Sparagmite region, southern Norway.
(NGU (380), Journal article, 1983)The Osen-Røa Nappe Complex is thrust upon a crystalline basement and a thin autochthonous sediment cover. The nappe complex is characterized by a sole thrust cutting up-section toward the SSE, by flats, ramps and contraction ... -
On "The nature of the basement contact". Critical comments on Chr. Oftedahl's paper in Norges Geologiske Undersøkelse, nr. 227, 1964.
(NGU (234), Journal article, 1965) -
Petrochemistry and palaegeographic setting of the Ordovician volcanic rocks of Smøla, Sentral Norway.
(NGU (359), Journal article, 1980)The Arenig-Llanvirn volcanic rocks of Smøla are distinctly calc-alkaline in their chemistry. The palaographic setting focuses attention on certain problems regarding lithostratigraphic correlation within the now fragmented ...