Browsing Artikler by Subject "GRØNNSTEIN"
Now showing items 1-16 of 16
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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. -
Disparate geochemical patterns from Snåsavatn greenstone, Nord-Trøndelag, Central Norway.
(NGU (373), Journal article, 1982)Greenstone volcanites of Middle Ordovician age from the Snåsavatn area of the Central Norwegian Caledonides can be divided into two distinctive groups on the basis of their geochemical patterns. The bulk of the lavas sampled ... -
Geochemistry and palaeogeographical setting of greenstone units on Frosta peninsula, Nord-Trøndelag, Central Norwegian Caledonides
(NGU Bulletin (450), Journal article, 2010)Volcanic and high-level intrusive rocks of the Støren Nappe exposed on the west coast of Frosta peninsula occur in two, distinct, magmatic units; the bimodal Fånes complex and the metabasaltic Granheim greenstone. North ... -
Geological investigations in the Snåsa-Lurudal area, Nord-Trøndelag.
(NGU (247), Journal article, 1967)Metasediments and meta-volcanic rocks of supposed Middle Ordovician age overlying a basement complex consisting predominantly of granite-gneisses, are described from an area near the north-eastern end of the lake Snåsavatn. ... -
Geology of the southern part of the Kautokeino Greenstone Belt: Rb-Sr geochronology and geochemistry of associated gneisses and late intrusions.
(NGU Bulletin (403), Journal article, 1985)The southern part of the Kautokeino Greenstone Belt is divided into four volcanic formations separated by sedimentary units. The formation represent a development from Archaean komatiitic sequences to Middle Proterozoic ... -
Greenschists from the south-eastern part of Helgeland, Norway, their chemical composition, mineral facies and geological setting.
(NGU (203), Journal article, 1958)I somrene 1951-54 gjorde forfatteren geologisk kartleggingsarbeidet i den sydøstlige del av Helgeland sammen med en rekke unge assistenter. Det kartlagte området er en omkring 25 km bred stripe langs svenskegrensen, mellom ... -
Komatiitic Chlorite-amphibole rocks and mafic metavolcanics from the Karasjok greenstone belt, Finnmark, northern Norway: a preliminary report.
(NGU (382), Journal article, 1983)A general account is presented of the field relationships, geochemistry and petrology of mafic and ultramafic metavolcanics within the Precambrian Karasjok greenstone belt. These metavolcanic rocks make up the major part ... -
Observations at Raipas miner, Alta, Finnmark. Iakttagelser ved Raipas gruve i Alta.
(NGU (191), Journal article, 1955)Raipas gruve i Alta kommune er en gammel gruve som tilhørte det engelske gruveselskapet Alten Copper-works Ltd. i det 19de århundre. Den produserte 12500 tonn kobbermalm \u00C8 6,3% Cu i en 30 års periode, men har ikke ... -
Orienterende undersøkelser vedrørende sprøhet og flisighet av bergarter.
(NGU (247), Journal article, 1967) -
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 ... -
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 ... -
The Caravarri Formation of the Kaukokeino Greenstone Belt, Finnmark, North Norway: a Palaeoproterozoic foreland basin succession.
(NGU Bulletin (442), Journal article, 2004)The Caravarri Formation is the youngest supracrustal unit in the Palaeoproterozoic Kautokeino Greenstone Belt of western Finnmark. This greenstone belt and correlative units at Alta farther north were formerly ascribed to ... -
The Early Proterozoic Karasjok Greenstone Belt, Norway. A preliminary description of lithology, stratigraphy and mineralization.
(NGU Bulletin (403), Journal article, 1985)The Karasjok Greenstone Belt of Finnmark, Norway, is a sequence of medium-grademetmorphic supracrustal rocks in the northernmost part of the Baltic Shield.Regional mapping has revealed a tectonostratigraphy with the ... -
The relation between the basal gneiss and the overlying meta-sediments in the Surnadal district, (Caledonides of Southern Norway).
(NGU (184), Journal article, 1953)The boundary between the basal gneiss and the overlying micaschists and micaceous gneisses is marked by a thin zone of \"basal quartzite\", but the quartzite is generally not at the exact boundary between the two divisions. ... -
The Resfjell ophiolite fragment, southwest Trondheim region, central Norwegian Caledonides
(NGU Bulletin (409), Journal article, 1987)The Resfjell Complex of Meldal, southwestern Trondheim region, provides an almost ideal crosssection through the uppermost part of an ophiolite. The stratigraphically lowest rocks exposed are metagabbro wich are followed ... -
The structure in the area of mineralization on Ulveryggen, Repparfjord, Finnmark.
(NGU (203), Journal article, 1958)I forbindelse med NGU's generelle geologiske kartlegging av det nordligste Raipas-\"vinduet\", har forfatteren laget et strukturelt kart over det mineraliserte området på Ulveryggen ved Repparfjord, 70 gr. 26N og 13 gr.32Ø ...