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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.
I samarbeid med geolog Pål A. Thjømøe har NGU utført oppfølgende kartlegging av mulige natursteinforekomster av jotunitter ved Skjefrås, noritter på Mydland og mangeritt på og omkring Mydland. Fra alle disse områdene er det tatt ut små blokk for sage- og poleringstester. Resultatene viser at tekniske egenskaper, homogenitet og blokkstørrelse er tilfredsstillende for jotunittene og mangeritten, mens norittene er for innhomogene og oppsprukket til bruk som naturstein.
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.
15/12 1972 fikk NGU en henvendelse fra Undervisningskonsulent A/S med spørsmål om geologisk assistanse og råd for påsetting av et dypborhull i Stavanger- området i forbindelse med en planlagt oljeboringsskole. Det var satt opp endel alternativer, og disse ble befart 2. februar 1973 av geolog Sverre Svinndal sammen med to representanter for Undervisningskonsulent A/S, Gunnar Granholm og Ragnar Dellenvall. Undersøkelser ble foretatt i tre områder: A. På øya Rott B. Tanangerområdet C.
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.
... ligger like øst for Seldalsvann i Sandnes kommune. Geologi- en utgjøres av forskjellige typer gneiser, vesentlig med granittisk ...
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
... mengde upublisert og publisert materiale omkring områdets geologi eksisterer, med hovedvekt på bergartenes dannelse. Mye av dette ...
... å lokalisere et tidligere indikert skyveplan samt kartlegge geologi og fjellkvalitet ned til tunnelnivå. Hullet ble filmet med optisk ...
... i et storstilt tverrfagleg prosjekt for kartlegging av geologi og miljøstatus i Skagerrak (Longva og Thorsnes 1997). Datasetta er ...
Bidrag til Skudenessedimentenes geologi O.A. Broch Side(r): 1-41 Last ned  3,7 MB Kort ...
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.