Browsing NGU Open Archive by Subject "KALEDONSKE FJELLKJEDE"
Now showing items 61-80 of 121
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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 ... -
Protoliths of the gneisses and mafic rocks in the Hellevik - Flekke Area in Sunnfjord, Western Norway
(NGU-Rapport (97.077), Report, 1997)The Hellevik-Flekke area comprises Precambrian crystalline rocks that have experienced a complex history of deformational and metamorphic events through both Precambrian and Caledonian times. The area can be divided into ... -
Rb-Sr age of the Blåfjellhatten granite in the Olden Window, Central Norway.
(NGU Bulletin (420), Journal article, 1990)Rb-Sr isotope whole-rock dating of undeformed and unaltered parts of the Blåfjellhatten granite has yielded an isochron age of 1356 +- 29 Ma with I.R.=0.7254 +-0.0027, interpreted as the age of intrusion. This age contrasts ... -
Rb-Sr dating of cleaved mudstones from eastern and western parts of the Gaissa Nappe Complex, Finnmark
(NGU-Rapport (2002.110), Report, 2002)Samples of pervasively cleaved mudstones and claystones from two different parts of the Gaissa Nappe Complex in Finnmark were subjected to Rb-Sr analytical investigation with the aim of trying to dtermine the metamorphic ... -
Rb-Sr isochron age of Caledonian acid volcanics at Stord, western Norway.
(NGU (300), Journal article, 1973)An eight-point Rb-Sr whole-rock isochron from Caledonianrhyolites at Stord in western Norway defines an age of 455 +- 5 m.y.and an initial 87Sr\/86Sr of 0.7071 +- 0.00018. This places thevolcanism in the Upper Ordivicium, ... -
Rb-Sr study of rapakivi granite and augen gneiss of the Risberget Nappe, Oppdal, Norway.
(NGU (380), Journal article, 1983)Rb-Sr dating of rapakivi granite and associated augen gneiss of the Risberget Nappe suggests that the rocks are post-Svecokarelian intrusions that were strongly foliated during Caledonian orogeny. Microstructures of the ... -
Some copper sulphideparageneses from the Raipas formation of Northern Norway.
(NGU (200), Journal article, 1957)The Precambrian Raipas formation of Northern Norway contains copper deposits showing two distinct paraeneses. The first is a type common in the Scandinavian Precambrian and Caledonian ores, i.e. chalcopyrite-pyrite-pyrrhotite ... -
Stratigraphical position of the Gudå conglomerate zone.
(NGU (227), Journal article, 1964)The Gudå conglomerate zone has been considered to be of Upper Ordovician to Lower Silurian age. The main argument for this conclusion has been that the conglomerates of this zone have been the same pebble composition as ... -
Stratigraphy and major structures of the Grong District, Nord- Trøndelag.
(NGU (354), Journal article, 1979)The rock sequence of the Grong district, which occurs in a depression within the Norwegian Caledonides between two Precambrian massifs, Børgefjell to the north and the Grong culmination in the south, can be divided into ... -
Stratigraphy and structure of the northern part of the Repparfjord - Komagfjord window, Finnmark, Northern Norway.
(NGU (377), Journal article, 1983)In the northern district of the Repparfjord-Komagfjord Window, supracrustal and intrusive rocks of Early Proterozoic age are unconformably overlain by a thin sequence of Vendian sediments. Both of these units are overthrust ... -
Strontium isotope composition of the Bindal Batholith, Central Norwegian Caledonides
(NGU Bulletin (423), Journal article, 1992)Forkortet: A strontium isotope study of the Bindal Batholith has been carried out. The data generally do not permit precise and accurate age calculations; however, good estimates for initial Sr ratios are commonly obtained. ... -
Structural evolution of the Bergsdalen Nappes, Southwest Norway
(NGU Bulletin (424), Journal article, 1993)The Bergsdalen nappes are Caledonian thrust sheets which experienced perva- sive, although heterogeneous ductile deformation during the upper green- schist to lowermost amphibolite-facies, Caledonian, thrusting history. ... -
Structural observations from the Kopperå-Riksgrense area and discussi- on of the tectonics of Stjørdalen and the N.E. Trondheim region.
(NGU (245), Journal article, 1967)Minor tectonic structures occurring in weakly metamorphosed Hovin and Horg Group sediments along Tevedalen, east of Meråker, are described in the first part of the paper. Three episodes of folding are recognized, the ... -
Structural succession in a part of the outer Hardangerfjord area, West Norway.
(NGU (343), Journal article, 1978)Recent mapping has made possible a reinterpretation of the tectonostratigraphy of this area, situated at the eastern edge of the \"Faltungsgraben\". It is shown that certain rock units occuring over large areas, and formerly ... -
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 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 ... -
Subdivision of the Jotun Nappe Complex between Aurlandsfjorden and Nærøyfjorden, South Norway.
(NGU (380), Journal article, 1983)In the area between Aurlandsfjorden and Nærøyfjorden the Jotun Nappe Complex can be subdivided into a lower thrust unit of mainly gneisses with mangerites, jotunites and minor supracrustals (the Flåm unit), and an upper ... -
Sulitjelmafeltet. Berggrunnsgeologisk kart - M 1 : 100 000
(Map, 1989)Beskrivelse i NGU Skrifter nr 93 -
Sulitjelmafeltet. Berggrunnsgeologisk kart - M 1 : 100 000. Beskrivelse.
(Skrifter (93), Map, 1989)The eugeoclinal rocks of the Sulitjelma region occup a large depression in the Norwegian Caldonodrd betwwen the Nasafjell tectonic window of Precambrian rocks in the south and the Tysfjord window in the north. The age of ...