419 resultater
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.
... 2017.002 med mer detaljert kartlegging og analyse av geologi og landskapsutvikling langs Gaula. I rapporten er det fokus på ... data, samt 14C-datering av organisk materiale. Geologi og landskapsutvikling langs Gaula for lokaliteter knyttet til ...
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.
... to the regional correlation of the various rock suites. Geologi av prekambrium i den nordlige delen av kartbladet Skoganvarre 2034 IV. ...
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.
... karakterisering av leire med 2D resistivitetsmålinger. Geologi på Byneset: en sammenstilling av geologiske, geofysiske og geotekniske ...
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 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.
... Persgardshalla Cu-Au mineralisering. IP-målinger og geologi Steinkjer, Nord-Trøndelag. ...
... analyser fra Be-mineraliseringer og regional geologi i Høgtuva-området ...
Rapporten omhandler Arco Norway Minerals A/S's Bamble-prosjekt fra årene 1983-85, de enkelte bergartstypene og deres opprinnelse. Spesiell vekt er lagt på de ekshalitive bergarter og tilknyttet mineralisering, bl.a. gull. Forslag til videre prospektering finnes i eget kapittel. Som vedlegg finnes en kartsammenstilling i M 1:100 000. Den bygger på nedfotograferinger av sammenstillinger i M 1:50 000, basert hovedsaklig på publiserte data.
The Kordalsnuten-Grøneviksåsen prospect is a 2.8 km2 target area with the potential to become a major international hard rock deposit. Located to the north-east of the operating Berakvam quarry owned by Norsk Stein AS, the prospect has been investigated by NGU to assess its significance. In the target area, NGU has identified and analysed two rocks of interest for aggregate production. The dominant rock is a uniform granodiorite which covers nearly ninety percent of the prospect.
Several potential graphite occurrences in Vesterålen were selected for follow-up work based on helicopter-borne geophysical data. The purpose for this is to confirm the existence of the graphite and next to briefly evaluate the quality and quantity of the graphite-bearing structures. The goal for the project, which is sponsored by Nordland county administration, is to increase the knowledge of each individual graphite occurrence.
Mannen is an unstable rock slope in the Romsdal Valley in the Møre og Romsdal County (western Norway). The slope is under continuous monitoring since 2009 by the Åknes/Tafjord Beredskap IKS. As part of the detailed site investigations, two more than 130 m deep, vertical cored boreholes have been drilled in 2010 and 2011.
This report gives an overview of the geology, the history of investigations and all previous data (now in digital form) on the distribution of P2O5 and apatite in the Lillebukt Alkaline Complex (LAC) and some selected adjacent areas.
Forkortet: The western coast of Norway is particularly vulnerable to active rockslide development due to the recent post-glacial uplift and the deep incision of the fjords created by glacial activity, leading to extremely steep fjord sides. The purpose of this work was to determine the influence of structural geology on the hazard analysis related to large rock avalanches in the Storfjorden area.
The borehole KH-08-12 was drilled in August/September 2012 by Geo Drilling and the logging was executed in March 2013 by the Geological Survey of Norway (NGU). The borehole is located at WGS-84 6895850N 395400E zone 32W and ca. 735 meters above sea level, at the upper western part of the Åknes rock slope. The drill cores are logged with regards to bedrock type, fracture frequency and zones of interest with respect to sliding plane(s).
Landsat-5 Thematic Mapper (TM) data has been used to map linear structures of three areas of Trøndelag, central Norway, where offshore activities demand more information about geological structures. The aim of the project was to utilise digital TM-data through an image processing system to enhance detection and analysis of large-scale planar structural features in the bedrock of these areas.
This drill hole is the first at Jettan in the Nordnes mountain, named NN-01-12. The borehole was drilled during summer/autumn 2012 by Arctic drilling and the drill core was logged at the Geological Survey of Norway (NGU) in May 2013. The cores are now stored at Løkken drill core and rock sample storage at the NGU. The drill core is approximately 200 metre long (198.8 m) and due to fracture and/or fault zones the drill hole was cemented and re-drilled several times to keep stable.
This report provides guidance for systematisation of geological data from the individual deposits to be stores in the Ore Data Base. This is built on NGUs former data base (FORIBA) (i.e.ore deposits registered in the Mineral Deposit Archive at NGU) which contained deposit numbers given by Foslie and Paulsen. The instruction is derived from the screen pictures to the database, and describes all fields which can be filled out. Options are given for most of the fields.
This report gives an overview of the geology, the history of investigations and all previous data (now in digital form) on the distribution of P2O5 and apatite in the Lillebukt Alkaline Complex (LAC) and some selected adjacent areas. The LAC is situated on the southern central part of the island Stjernøy in the Altafjord 45 km NW of Alta.
Rapportene gir en oversikt over forfatterens tidligere arbeider i Grongfeltet. Den følger opp med undersøkelse av 360 prøver fra 1975. Det er tatt bekkesedi- ment- jordprøve- og moseprøver. En del Mo-anomalier påvises. Malmpotensialet diskuteres for Mo og kobber. Resultatene gis i form av kart og tabeller.
Lineament patterns in the coast-region from Lofoten to Loppa, is investigated. Exposure of fault-rocks show a variety of modes of deformation from ductile to brittle.Relative movements are indicated in some places, showing small strike-slip components and large vertical components. The area represents an elevated substratum for post-Caledonian basin-sediments.
... med særlig henblikk på de såkalte albittdiabasenes geologi og petrologi. ...