Blar i Artikler på emneord "GEOKRONOLOGI"
Viser treff 1-20 av 82
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A fluidization breccia in granite at Skaget, Svellingen, Frøya.
(NGU (380), Journal article, 1983)The breccia consists of fragmented and comminuted host rock material and small amounts of hydrothermal quartz, epidote, laumontite, ?stilbite, calcite and montmorillonite. At least three brecciation and mineralization ... -
A Late Quaternary correlation chart for Norway.
(NGU (223), Journal article, 1963)A correlation chart is presented containing the stratigraphical results of some selected Norwegian studies in the wide field of Quaternary geology. Studies of plant remains in bogs, pollen investigations, evidence of ... -
A rift-related mafic dyke swarm in the Corrovarre Nappe of the Caledonian Middle Allochthon, Troms, North Norway, and its tectonometamorphic evolution
(NGU Bulletin (419), Journal article, 1990)Forkortet. The Corrovarre Nappe is the highest tectonic unit of the Kalak Nappe Complex, in the Caledonian Allochthon, in the Nordreisa area of Troms, North Norway. The nappe consists of meta-arkoses, metapellites and ... -
A structural, stratigraphic and petrologic study of anorthosites, eclogites and ultramafic rocks and their country rocks, Tafjord area, western South Norway.
(NGU (332), Journal article, 1977)The Tafjord area of the central basal gneiss region contains Caledonized metamorphic rocks divided into two groups. The 1000 m.y. old Fetvatn Geniss is a homogeneous zone of granodioritic gneiss that was intruded as part ... -
A U-Pb zircon, Archaean age for granitoid rocks in the Kunes Nappe, Laksefjord Nappe Complex, Finnmark, North Norway
(NGU Bulletin (449), Journal article, 2009)Nappes in the middle parts of the Caledonian tectonostratigraphy in Finnmark, northern Norway, contain slices of granitoid basement that hitherto have not been reliably dated. Zircons extracted from two, high-K, calc-alkaline ... -
Adamsfjord og Ul'lugai'sa. Beskrivelse til de berggrunngeologiske kart 2135 I og 2135 II - M 1:50 000 (med fargetrykt kart).
(NGU; Skrifter (381; 40), Journal article, 1983)Descriptions are presented of the different rock-types occurring in either autochthonous or allochthonous position within the confines of these two map-sheets. Five principal geological or tectonostratigraphical elements ... -
Age determination from the Trondheim Region Caledonides, Norway: a preliminary report.
(NGU (288), Journal article, 1973)Twenty-four potassium-argon age determinations have been made on metamorphic minerals and whole-rocks (phyllites) from the Caledonides of the Trondheim region, Norway. Nineteen of the apparent ages fall between 438 and 402 ... -
Age determination of Norwegian minerals up to March 1964.
(NGU (228), Journal article, 1964)A summary of absolute age determination of Norwegian minerals and rocks up to March 1964. Map of loclities, diagrams and analysis of the data. -
Age determinations from the Iveland-Evje area, Aust-Agder.
(NGU (300), Journal article, 1973)A Rb\/Sr isochron age determination on intrusive granite and monzonite from the Iveland-Evje area gave an age of 1038+- 43 m.y. Biotite from the granite dated by the K\/Ar method gave an age of 845+-60 m.y. These values ... -
Age of gneissic rocks in the Caledonian nappes of the Alta district, northern Norway
(NGU Bulletin (403), Journal article, 1985)Result of a Rb-Sr geochronological investigation are presented which confirm the Precambrian age of gneisses forming parts of the Skillefjord and Nalganas Nappes of the West Finnmark Caledonian allochthon. In the case of ... -
Bemærkninger om oversiluren i Brumunddalen
(NGU (37), Journal article, 1904)Forkortet: The author can not agree in some points of the description of the Upper Silurian in Brumunddalen, which Mr.K.O.Bjørlykke has published in \"Norges geologiske undersøkelses Årbok\" (1904 No.2). I. The graptolitic ... -
Beskrivelse av faunaen.
(NGU (155), Journal article, 1940)The fauna here reported from Karmøy is from a light often micaceous calcareous sandstone, the fossils occurring as rusty impressions and casts, mostly deformed and indistinct. Corals and crinoid stems occur in greatest ... -
Byssonychia? sp. från Karmøy.
(NGU (155), Journal article, 1940)Material: Cast of bivlved specimen and some impressions of the exterior. Diagnosis: Equivalved, laterally very unsymmetrical, form elliptical, height greater than length. Margo cardinalis, the hinge line, straight, somewhat ... -
Børgefjell. Beskrivelse til det berggrunnsgologiske gradteigskart J.19 - 1: 100 000
(NGU; Skrifter (298 ; 8), Journal article, 1973)Three main structural units are present: 1. The Precambrian (Svecofennokarelian) basement of the Børgefjell Window. \". Low grade (greenschist facies) Lower Paleozoic rocks belonging to the Seve-Køli Nappe Complex. 3. The ... -
C14-datings referring to shore lines, transgressions, and glacial substages in Northern Norway. (A supplement to papers of 1960 and 1961 by the author).
(NGU (215), Journal article, 1962)Denne publikasjonen er en foreløpig meddelelse som i det vesentlige dreier seg om en serie C14-dateringer utført av R. Nydal ved Laboratoriet for Radiologisk Datering i Trondheim. Dateringene synes å gi viktige opplysninger ... -
Cier'te. Beskrivelse til det berggrunnsgeologiske kart 1733 II - 1:50 000 (med fargetrykt kart).
(NGU; Skrifter (331; 20), Journal article, 1977)A general description of the bedrock geology is presented. The map area has a threefold tectono-stratigraphic division. 1: The Precambrian (Sveco-karelian) besement rocks are subdivided into two complexes. The older one, ... -
Classification of uranium mineralization in Norway.
(NGU (380), Journal article, 1983)NGU has carried out exploration for uranium on a small butvarying scale since the second World War. An attempt is made toclassify types of uranium mineralization occuring in Norway, followinga system based on genetic types. ... -
Dating explosive volcanism perforating the Precambrian basement in southern Norway.
(NGU (380), Journal article, 1983)K-Ar and Rb-Sr dating have been performed on various hypabyssal diatreme-facies volcanic rocks perforating the Sveconorwegian zone of the Precambrian basement in southern Norway. The dated rocks were taken from the Fen ... -
Deglaciation of the continental shelf off southern Troms, North Norway.
(NGU (380), Journal article, 1983)Based on lithostratigraphical and seismic studies, four (possibly five) glacial events are recognized in Andfjorden. The two oldest, the I- and G-events are represented by basal tills. The continental ice sheet probably ... -
Deglasiasjonsforløpet i Aurlandsdalen og områdene omkring, Vest-Norge.
(NGU (317), Journal article, 1975)Ice movements and the course of deglatiation in the Aurland area are reconstructed. The oldest ice movement was from the SE-ESE and converged towards Aurlandsfjorden, while the younger movements were influenced by the local ...