Blar i NGU Open Archive på emneord "OMDANNING"
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Petrography and metamorphism in the Precambrian rocks of the Magnor area, S. Norway : Kongsvingerfeltets geologi
(NGU (246), Journal article, 1967) -
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 ... -
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, 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 ... -
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 ... -
Precambrian and Caledonian tectonometamorphic evolution of Northeastern Seiland, Finnmark, North Norway.
(NGU (373), Journal article, 1982)The metamorphic rocks of northeastern Seiland are predominantly Precambrian gneisses and schists. The Fagervik infracrustal complex, composed of tonalitic gneisses, constitutes a basement to the Late Precambrian-Cambrian ... -
Preliminary investigations of some Ordovician volcanics from Stord, West Norway.
(NGU (327), Journal article, 1976)Later Ordovician volcanics on Stord, W. Norway, comprise alkaline rhyolite flows and ignimbrites, and ferro-basalt (icelandite) and basaltic andesite lavas. The latter are hy-normative, \"evolved\" rocks rich in residual ... -
Results from a structural study in Pasvik, North Norway
(NGU-Rapport (97.018), Report, 1997)This report describes results from structural investigations undertaken in Pasvik in l996. The Early Proterozoic rocks of the Pasvik (Petsamo) and Kobbefoss Groups, and Archaean gneisses were deformed during three ductile ... -
Rutile deposits in Norway. Vol. 1: Text.
(NGU-Rapport (99.129 I), Report, 1999)(Forkortet) Important rutile deposits in Norway are two of main types: eclogite rutile deposits in Western Norway and metasomatic rutile deposits in the Bamble province of southernmost Norway. Eclogite deposits formed by ... -
Rutile deposits in Norway. Vol. 2: Figures.
(NGU-Rapport (99.129 II), Report, 1999)Confidential until 31.12.2004. See the text in Report 99.129, Vol.1. -
Rutile deposits in Norway. Vol. 3: Appendix.
(NGU-Rapport (99.129 III), Report, 1999)See the text in Report 99.129, Vol.1.Innhold:App. 1: Overview geographic map of Norway with rutile localitiesApp. 2: Compilation of analyses of rutile deposits and rutile-bearing rocksApp. 3: Rutile provinces and localities ... -
Rutile in eclogites as a mineral resource in the Sunnfjord Region, Western Norway.
(NGU Bulletin (436), Journal article, 2000)The world's resources of the primary titanium raw materials ilmenite and rutile are very large. However, there is a lack of high-grade, high-quality ilmenite deposits as well as good rutile deposits. Particular focus has ... -
Sedimentary, tectonic and metamorphic features of the Devonian of Røragen, Sør-Trøndelag.
(NGU (311), Journal article, 1974)An outline is given of the depositional environment of these Lower Devonian rocks following the discovery of various primary sedimentary structures which have provided some evidence of palaeocurrent directions. Tectonic ... -
Structural history of the Bygdin area, Oppland.
(NGU (247), Journal article, 1967)The tectonic history of the area, which is part of the marginal thrust zone of the Norwegian Caledonides, is described. Within the area, the Upper Jotun Nappe has been thrust over the Valdres Sparagmite and the Bygdin ... -
Structure and petrology of the Bergen-Jotun kindred rocks from the Gjendebu region, Jotunheimen, Central Southern Norway.
(NGU (373), Journal article, 1982)The Gjendebu region is located within the Jotun Nappe, highest tectonic unit of the southern Norwegian Caledonides. The structure of the area is dominated by the NE-rending Tyin-Gjende Fault, a major zone of repeated ... -
Structures and metamorphism at Brygfjell-Simafjell within the Rødingsfjellet Nappe Complex, Nordland, Norway
(NGU Bulletin (431), Journal article, 1996)Structures and metamorphic featues are described from parts of the area of 1:50 000 map-sheet Korgen. The area investigated is situated within the Rødings- fjellet Nappe Complex in the Caledonides of Nordland. The rocks ... -
Structures and ore genesis of the Grimsdalen deposits, southern Trondheim region, Norway.
(NGU (351), Journal article, 1979)The central part of the Grimsdalen area of the southern Trondheim region is occupied by a sequence of metavolcanics with subordinate metasediments, termed the Folla Group, which are correlated with the Støren Group of the ... -
The "Better to burn out than to fade away" tour: magma-driven, high-grade metamorphism in the Sveconorwegian Province, SW Norway during the terminal stages of Fennoscandian Shield evolution. NGF/NPF field-trip guide, 11. June 2017
(NGU-Rapport (2017.030), Report, 2017)The exposed rocks in Rogaland, that we will study on this field trip, provide insight into processes in the lower and middle crust of a long-lived, late Mesoproterozoic continental-margin arc, on tens of million year time scales.