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Norges geologiske undersøkelse (NGU) har laget oppgaver for Geofag X, 1 og 2 for Strinda videregående skole i Trondheim, Sør-Trøndelag. Oppgavene er tilrettelagt for Trondheimsområdet, men de kan tilrettelegges andre områder i Norge. NGU har etablert et samarbeid med Strinda videregående skole, gjennom Geonettverket for Geofag i Midt-Norge som er i regi av Skolelaboratoriet ved NTNU.
Norges geologiske undersøkelse (NGU) har laget oppgaver for Geofag X, 1 og 2 for Malvik videregående skole i Malvik kommune, Sør-Trøndelag. Oppgavene er tilrettelagt for Malvikområdet, men de kan tilrettelegges for andre områder i Norge. NGU har etablert et samarbeid med Malvik videregående skole, gjennom Geonettverket for Geofag i Midt-Norge som er i regi av Skolelaboratoriet ved NTNU.
This field excursion guide, 'The geology and ore deposits of the Pechenga Greenstone Belt', prepared for the International Field Conference and Symposium 'Layered Mafic Complexes and Related ore Deposits of Northern Fennoscandia, Finland, Norway, Russia ' in relation with the International Geological Correlation Program (IGCP) Project 336.
In connection with the detailed planning of new double track railway tunnel approx. 23.5 km long from Oslo to Ski, the Geological Survey of Norway (NGU) on request from the Norwegian Rail Road Authority (Jernbaneverket Utbyggingsdivisjonen) conducted an upgrade of the geological and geophysical background material at a regional scale and delivered it in a digital form in 2007 (Lutro et al. 2007).
The report compares some aspects of the activities of the Geological Surveys of Finland and Norway and suggests a number of means by which cooperation between the two organisations can be developed. The appendices are two papers on which the writer worked during a period of study leave at the Geological Survey of Finland office in Espoo.
This report contains 15 maps (scale 1:1,5 million) presenting the geological database, bathymetry and various interpretations of the geology in the Norwegian Trench off southern Norway and the northern part of the adjacent North Sea Plateau. A short description is given for each map. The maps, made as a part of the Skagerrak Project (Longva & Thorsnes 1997, Ottesen et.al.
The Geological Survey of Norway (NGU) has previously been in involved in two reports describing the geological conditions along the trace of the ROGFAST tunnel. There it was concluded that the geological information for the area between Kvitsøy and Bokn was too scattered to give a reliable interpretation of the geology.
As a part of the MINN project (Minerals in Northern Norway) a helicopter-borne geophysical survey were performed at Senja in 2012 – 2014. Electromagnetic data from this survey showed up anomalies that could be caused by large graphite mineralisations. Geophysical and geological follow-up work was carried out at three locations in 2016, Hesten, Vardfjellet and Grunnvåg, with additional funds from the Troms County administration.
Fortrolig til 04.05.2003. The Engebøfjellet eclogite deposit is situated at the northern side of Førde- fjord near the small community Vevring in Naustdal kommune, Sogn og Fjordane county, W.Norway. Geologically the Førdefjord area belongs to the "Western Gneiss Region", between the Devonian Kvamshesten basin to the south and the Devonian Håsteinen basin to the North.
Reconnaissance structural geological mapping and field XRF-analyses with a portable XRF-analyzer were carried out at the now closed Ulveryggen copper mine, Repparfjord Window, Finnmark. The goals of the study were to better understand the structural setting of the mineralisations at Ulveryggen and to test a handheld XRF-analyzer on this type of copper deposit. Preliminary conclusions suggest a structural control of at least part of the mineralisations.
Rapporten inneholder 17 utvidete sammendrag av innlegg holdt på møtet om Finnmarks geologi, NGU 16. mars 1984. Innleggene omhandler berggrunsgeologi på Finnmarksvidda og i vinduene, aldersdateringer, malmundersøkelser, geofysikk, kvartærgeologi, sand- og grusundersøkelser og geokjemi.
The report describes the cooperation between the Geological Surveys of Lithuania (GSL) and Norway (NGU) in the period 1992-96. GSL existed in 1992 primarily as an administrative body, governing the activities of state enter- prises which had existed prior to 1991.
The report contains an economic geological evaluation of the marble deposits in the Salsbruket area. The key market for the Salsbruket marble is considered to be as a filling and coating pigment in the paper industry, and emphasis is given to this application in considering the viability of each deposit.
Confidental until 31.12.2003. Geological mapping of a planned extraction area for hard rock aggregates has been carried out at Gulstø, Bremanger for EUROVIA. A number of hand-specimens were collected and thin-sections of these rocks were subsequently examined under the microscope.
Thirty-one selected localities are brefly described along a traverse from Porsangerfjorden to Tanafjorden. The localities provide a general impression of representative rock types and their deformation in the Gaissa and Lakse- fjord Nappe Complex, as well as the mylonitic rocks in the basal thrust of the overlying Kalak Nappe Complex. Attention is paid to the stromatolite biostromes in the Porsanger dolomite.
A new potential extraction area for hard rock aggregates around Såt, near the existing quarry in Espevik has been mapped geologically. The main focus has been geological mapping and interpretation combined with sampling of the different rock types for mechanical testing and microscopical analyses. The geology in Såt prospect is complex. The dominating rock type is porphyritic biotite gneiss-granite which occur in the north-eastern half of the prospect.
In the first part of the report, a synopsis is presented of the general geology and tectonostratigraphy of this part of Central Norway, with a slightly more detailed account given of the geology of Fosen Peninsula. The second part comprises an excursion guide, spanning 3 days, covering the southern district of Fosen from Rørvik to Ørland and to the outer coast near Sandnes; and then continuing along the Verran Fault (Møre-Trøndelag Fault Complex) via Verrabotn and Beitstadfjorden to Steinkjer.
As a part of the MINN project (Minerals in Northern Norway) helicopter-borne geophysical surveys were performed on Senja and in Kvæfjord. Electromagnetic data from these surveys showed up anomalies that could be caused by large graphite mineralisation.
The geological lineament pattern on the island of Hinnøya, Vesterålen archipelago in Norway, was studied by means of remote sensing techniques. One quarterscene of Landsat TM covering 90 km x 90 km with a spatial resolution of 30 m, registered 900720, was used to extract these structural features.
Rapporten beskriver en del produkter og erfaringer som British Geological Survey (BGS) har innen miljøgeologi, land - sjø kart og pukkundersøkelser. BGS-rapportene innen miljøgeologi satser på meget enkle kart, fortrinnsvis med bare et tema, og på oppbygging av miljøgeolgiske kart på basis av disse. Flere av geologene ved BGS mener at man i land - sjø kart serien kunne med fordel ha valgt en enklere presentasjonsform.
In this account we describe a modern Petrophysical and Palaeomagnetic Laboratory in terms of construction details, software and applications. The Norwegian Geological Survey Laboratory allows definite measurements of magnetic susceptibility, weight, volume, density and the natural remanent magnetization (NRM). These parameters are of crucial importance in the regional interpretation of aeromagnetic and gravity data.
I forbindelse med NTNU Vitenskapsmuseets arkeologiske utgravninger i perioden 2015-2018 i Melhus kommune, Sør-Trøndelag, er det behov for mer kunnskap om hvordan området kan ha sett ut i forhistorisk tid. Rapporten er en videreføring av NGU-rapport 2017.002 med mer detaljert kartlegging og analyse av geologi og landskapsutvikling langs Gaula. I rapporten er det fokus på områdene fra Hofstad til Kvål (område 1) og fra Evjengrenda til Hovin (område 2).
Geological mapping and interpretation has shown that the rocks in Berakvam operating quarry can be subdivided in four NW-trending zones, which continue at depth down to the northeast.
The geology and structural history of the Precambrian metamorphic basement in the northern part of the Skoganvarre district, Finnmark are described. The most important supracrustal rock types present are quartzofeldspatic, quartzitic, calcareous and micaceous schists of sedimentary origin, and amphibolitic schists derived by the metamorphism of mafic volcanic and intrusive igneous rocks.
ABSTRACT The geology and structural history of the western margin of the Karasjok Belt in the Skoganvarre district are described. Archean supracrustals of the Karasjok group are thrust westwards across the Archean Basal gneiss complex and its ?Early Proterozoic metasedimentary cover. The Stallucak'ka Thrust Zone is a major tectonic dislocation containing mylonites derived from a wide variety of protoliths.
Geological mapping of a planned extraction area for hard-rock aggregates has been carried out at Seljestokken, Flora municipality, for Hertig Natursteine AG. A number of hand-specimens of the bedrock were collected and thin-sections were subsequently examined under the microscope. The bedrock of the area consists of fine-granied, Devonian sandstone with a few, thin beds of siltstone. The thin-sections show that the grain size usually ranges between 0.4 and 0.05 for most of the rocks.
In the framework of Rogfast undersea tunnel project, the Norwegian road authorities, western region, have cored four locations along the tunnel trace. The report contains the results of the geological logging of several of these cores from drilling at four locations. The first core comes from Alstein, an island between Randaberg and Kvitsøy, and displays the typical intrusive mainly gabbroic rocks of the Karmøy Ophiolite unit.
As a part of the MINN project (Minerals in Northern Norway), a helicopter-borne geophysical survey was performed in Lofoten and Vesterålen in 2013. Electromagnetic data from this survey showed up anomalies that may be caused by large graphite mineralisation.
This report presents preliminary results of regional fieldwork in the Okstind- ene Area, the Rödingfjäll Nappe Complex (RNC), Uppermost Allochthon, Nordland, Norway. The area hosts the Bleikvassli sedimentary-exhalative Pb-Zn deposit, and the main objective with this work is to establish a geological basis for prospecting after new Pb-Zn deposits in the area. The area comprises four lithological units; the Kjerringfjellet(?), Anders Larsa/Lifjell and Kongs- fjell Groups and the Målvatn Unit.
I etterkant av kvikkleireskredet på Byneset 1. januar 2012, ble det gjennomført 2D resistivitetsmålinger som en del av den umiddelbare kartleggingen av områdene rundt skredgropa. Sammen med geotekniske grunnundersøkelser var dette noe av grunnlaget for vurderingene av stabiliteten til området etter skredhendelsen. I tiden etter er det gjort mange flere grunnundersøkelser; både geotekniske, geologiske og geofysiske.
It is proposed to perform an orientation survey in three parts (1) complete an inventory of the regional geochemical mapping thus far done in all WEGS countries (1988-89), (2) collect overbank sediments at various depths from 10-15 sample sites within the countries represented in the Working Group (1988)(3) repeat item (2) in all WEGS countries that want to participate (1989).
Detailed mapping of a syn-orogenic intrusion and the surrounding rocks provides supporting evidence in favour of a recent re-interpretation of the stratigraphy of the Trondheim Nappe Complex (Sturt et.al.1994) The Tron intrusion lies within rocks of the Hummelfjell group. The preservation of folds within recry- stallised hornfels close to the intrusion confirms the presence of an old tectono-metamorphic event in these rocks.
The report is a guidebook for a four day excursion in connection to the COPENA meeting held at NGU 18.-22.Aug.1997. The first day of the excursion will visit localities in the Caledonian Nappes at Oppdal, and then continue over Sogne- fjell to Sogndal with stops along the contacts to the Jotun Nappe and in the nappe itself. The second day the excursion will continue through the Western Gneiss Region to Måløy with several stops in the Proterozoic gneisses.
Detailed mapping of a syn-orogenic mafic intrusion and the surrounding rocks provides supporting evidence for a recent re-interpretation of regional stratigraphy (Sturt et al. 1991). The Øyungen intrusion is a monotonous sheeted body of uralitised gabbro sitting in the Åsli formation of the Gula Group (Nilsen & Wolff 1989).
Geologisk kartlegging i Grongfeltet i kartbladene Harran 1824 III, Grong 1823 IV, Andorsjøen 1823 I, Namsskogan 1824 II og Tunnsjøen 1924 III. Petrografisk og strukturgeologisk beskrivelse av bergartene. Beskrivelse av sulfidmineralisering og mulig porfyr Mo forekomst ved Fremstfjell.
New Arctic aeromagnetic data from Spitsbergen, Svalbard Archipelago, have been interpreted. The depths to the top of the magnetic source rocks have been interpreted using profile data, and the interpretation shows that the magnetic basement is deeper than 3 km below sea level over large areas. A picture of basement horsts and grabens emerges from this map. A deep N-S trending trough, more than 8 km deep, exists beneath Isfjorden.
Rapporten beskriver resultatene fra geofysiske- og geologiske undersøkelser av Persgardshalla Cu-Au mineralisering ved Binde i Steinkjer kommune. Undersøkelsene har vist at mineraliseringene ved Persgardhalla er helt lokale kobber-gull-anrikninger uten noen økonomisk interesse. Det er ingen antydning til andre gullanrikninger i området. IP-målingene tyder ikke på noen ut- bredelse av sulfidmineraliseringer av betydning langs N-S strukturer.
I denne rapporten er det samlet forskjellig ikke tidligere rapportert materiale fra undersøkelser i Høgtuva-prosjektet. 1) Sporelementanalyse av borkjerner er foretatt for å undersøke malmsonderingen mot dypet. Analysene viser at forholdene har endret seg fra den dagnære delen hvor U, Th, Zr, Nb, Sn, Mo, Ba og Cu er anriket i Be-sonene. I det dypere nivået er det bare Sn som er anriket sammen med Be. 2) Parallellanalyser på Be ved NGU og eksterne laboratorier viser at nivået ligger ca.

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