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Forkortet: In cooperation with "Statens vegvesen Region vest" and "Statens vegvesen Vegdirektoratet", the Geological survey of Norway (NGU) has performed research where new methods in tunnel planning were tested in the ROGFAST project.
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.
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.
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.
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.
Map explanation: NGU Report 2004.007
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.
Lund, Bjørn 0800-3416 2000.029 I samarbeid med geolog Pål A. Thjømøe har NGU utført oppfølgende kartlegging av mulige ...
Current research on ilmenite in the Egersund anorthositic Province is summarised in the present report. The first step in the prospecting for new ilmenite deposits is considered to be finished. This step contains pri- marily collection of raw data, such as airborne geophysical measurements, petrophysical studies, recognisance mapping, XRF-field-measurements, thin section studies and microprobe analyses.
In co-operation with Amrock JV AS, the Geological Survey of Norway (NGU) mapped in September 2001 the geology of a new potential extraction area for hard rock aggregates around Såt. The results were presented in NGU Report 2002.007. A drilling program was accried out in December 2001 - january 2002 in order of estimate the deep structure and volume of the different rock qualities in the Såt prospect.
... endel alternativer, og disse ble befart 2. februar 1973 av geolog Sverre Svinndal sammen med to representanter for Undervisningskonsulent ...
Geological description of well logs, cuttings and surface samples in the Tananger-Sandnes area was carried out in order to gain a wider understanding of the Caledonian nappe sequences. The upper part of the Jæren Nappe Complex comprises gneisses, amphibolite, marble and calc-silicate gneiss. This may be equivalent to the mica gneiss and minor calcite marbles seen in the NSD-1 well.
Kvartsforekomstene ligger like øst for Seldalsvann i Sandnes kommune. Geologi- en utgjøres av forskjellige typer gneiser, vesentlig med granittisk sammen- setning. Soner med amfibolitt forekommer. I disse prekambriske bergarter er det mulig å følge et kvartsdrag fra Seldal I i syd til det gamle talkbrudd på Nordland i nord. Kvartsen er ikke av pegmatitt-type, men stammer fra de sedimentære avsetninger i prekambrisk tid. I Seldal er det to kvarts-forekomster, og begge er inndelt i soner.
Geological mapping in scale 1:5000 in the Sokndal Lobe of the Bjerkreim-Sokndal layered norite intrusion has confirmed that cyclic unit no.IV of the magmatic stratigraphy comprise a high density of Fe-Ti oxide rich layers. The area naturally divides in the Ørsland, Bakka-Krune and Einebakka areas which indi- vidually are shaped as mega-lenses connested to each other via more narrow zones. However, seen together they comprise an open synfom dipping 40o to the west.
Quaternary geology of Jæren and adjacent areas, southwestern NorwayBjørn G. Andersen, Ole P. Wangen, Svein R. ØstmoPage(s): 1-55
I samarbeid med Rogalsnd fylke har NGU skaffet til veie geologiske data, utført kartlegging og sammnestilt ewt berggrunnsgeologisk kart i målestokk 1:25 000 over området Sokndal - Mydland - Berrefjord. I tillegg er det gjort innledende betraktninger om mineralressurser. Tilsammen utgjør dette Del 1 av et planlagt 2-årig prosjekt som er rettet mot mineralske ressurser.
NGU har utført geofysisk logging i et 300 m dypt borehull på øya Alstein som ligger midt mellom Randaberg og Kvitsøy nordvest for Stavanger. I prosjektet E-39 Rogfast planlegges undersjøisk tunnel under Boknafjorden/Kvitsøyfjorden og målingene var en del av forundersøkelsene. Hensikten med borehullet og loggingen var å lokalisere et tidligere indikert skyveplan samt kartlegge geologi og fjellkvalitet ned til tunnelnivå. Hullet ble filmet med optisk televiewer.
Etter krigen ble det dumpa fleire (>30) skip fullasta av ammunisjon/kjemiske våpen i Skagerarrak. FFI lokaliserte 15 vrak ved hjelp av sidesøkende sonar i 1989 og inspiserte fem av ei med ROV. I 2002 blei fire av desse vraka inspiserte på nytt. Posisjonen til dei resterande vraka er ukjent. Siden vraka representerer ein miljøtrussel er det viktig å halde oppsikt med dei og treffe tiltak som kan avgrense trusselen.
Bidrag til Skudenessedimentenes geologiO.A.
Caledonian structural geology and tectonics of East Hinnøy, North Norway.John M. BartleyPage(s): 1-24The gravity field of the Norwegian sector of the North Sea.J. Hospers, E.G.
Industrian minerals - towards a future growthTor-Arne Karlsen, Brian SturtPage(s): 7-14Download  3,7 MB
Geology and metamorphic evolution of the Roan area, Vestranden, Western Gneiss Region, Central Norwegian Caledonides.Charlotte MøllerPage(s): 1-31
Sub-till sediments at Rokoberget, Southeastern NorwayKåre Rokoengen, Lars Olsen, Synøve F.
Bedrock geology of the Altevatn-Måskanvarri area, Indre Troms, northern Scandinavian Caledonides.Lars Kristian StølenPage(s): 5-23
Neotectonics in the Ranafjorden area, northern NorwayOdleiv Olesen, Svein Gjelle, Herbert Henkel, Tor Arne Karlsen, Lars Olsen, Terje SkogsethPage(s): 5-8
From Archaean to Proterozoic on Hardangervidda, south NorwayAnne Birkeland, Ellen M.O. Sigmond, Martin J.