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Browsing NGU Open Archive by Author "Sturt, Brian A."

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    • A preliminary account of the geochemistry and ore mineral parageneses of some Caledonian basic igneous rocks from Sørøy, northern Norway. 

      Stumpfl, Eugen F.; Sturt, Brian A. (NGU (234), Journal article, 1965)
      The intrusion of the Storelv and Breivikbotn gabbros into metasediments on the island of Sørøy took place during the late stages of the first phase of Caledonian folding (F1). Both gabbros were then affected by almandine ...
    • A probable Permian hydrothermal alteration age for a quartz syenite dyke from Stabben, Nordmøre. 

      Sturt, Brian A.; Sundvoll, Bjørn; Askvik, Helge (NGU Bulletin (432), Journal article, 1997)
      A Rb-Sr whole-rock isochron from a quartz-syenite dyke at Stabben, Nordmøre, has provided an age of 263 +- 6Ma. This could be taken to indicate a crystallisation age for the dyke, i.e. Early Permian. The age, however, does ...
    • Age of gneissic rocks in the Caledonian nappes of the Alta district, northern Norway 

      Sturt, Brian A.; Austrheim, Håkon (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 ...
    • Excursion guide: The Otta nappe and its integration into the Trondheim Nappe in the South-Central Scandinavian Caledonides 

      Ramsay, Donald M.; Sturt, Brian A. (NGU-Rapport (98.103), Report, 1998)
      This is an excursion guide for the Gudbrandsdalen - Nord-Østerdalen Region. It emphasies change in the stratigraphy\/tectonostratigraphy from previous models. The excursion demonstrates the presence of major unconformities ...
    • Fact-finding Mission to Ethiopia and Eritrea 

      Sturt, Brian A.; Barkey, Henri (NGU-Rapport (95.077), Report, 1994)
      Frie emneord: Geologi Utviklingsbistand Organisasjonsstruktur Oppbyggingsbehov Rapporten gir en kortfattet oversikt over geologien i Etiopia og Eritrea, samt en oversikt over de viktigste mineralske ressurser. Videre ...
    • Geological correlation of the Pechenga and Pasvik zones. 

      Melezhik, V.; Sturt, Brian A.; Nilsson, Lars Petter (NGU-Rapport (92.236), Report, 1992)
      As the result of an agreement between NGU and A\/S Sulfidmalm, NGU has carried out geological investigations of the Pechenga and Petsamo Group rocks. The main purpose of these investigations was to provide a stratigraphi ...
    • Magmatic and detrial pyrrhotite and pentlandite and magmatic troilite from Nordfjellmark, Velfjord-Tosen region, Central Norwegian Caledonides 

      Nilsson, Lars Petter; Sturt, Brian A. (NGU Bulletin (427), Journal article, 1995)
    • Mulighet for utvikling av mineralressurser i Norge 

      Sturt, Brian A.; Barkey, Henri; Heldal, Tom; Neeb, Peer-Richard (NGU-Rapport (95.046), Report, 1995)
      Rapporten beskriver eksisterende og fremtidige muligheter for norsk mineralbasert industri, spesielt mulighetene for eksport.
    • Muligheter for undergrunnsdeponering av CO2 i kystnære områder - en forstudie. 

      Bøe, Reidulv; Sturt, Brian A.; Sand, Morten (NGU-Rapport (98.149), Report, 1998)
      Det er nå generelt akseptert at menneskeskapte CO2-utslipp bidrar til den globale økningen i atmosfærisk CO2-nivå og en sterkere drivhuseffekt. Muligheten for at den økende drivhuseffekten kan føre til klimatiske forandringer ...
    • N2-CO2-CH4-H2O metamorphic fluids in microdiamondbearing lithologies from the Western Gneiss Region in Norway 

      Larsen, Rune B.; Sturt, Brian A.; Eide, Elizabeth A.; Dobrzhinetskaya, Larissa F.; Burke, Ernst, A.J. (NGU Bulletin (427), Journal article, 1995)
    • Ofiolittundersøkelser i Snåsa og Lierne: en rekognosering for å påvise mulig økonomisk interessante forekomster av malm, industrimineraler og naturstein. 

      Ramsay, Donald McDonald; Nilsson, Lars Petter; Sturt, Brian A. (NGU-Rapport (99.114), Report, 1999)
      (Forkortet) Rapporten oppsummerer resultater fra befaring av ofiolittfragmenter i Snåsa og Lierne i månedsskiftet juni-juli samt en kort oppfølgingtur i oktober 1999. Etter undersøkelse av en hel rekke ofiolittfragmenter ...
    • Ophiolitic ultramafites in the Folldal-Røros tract, and their Cr-(PGE) mineralisation 

      Sturt, Brian A.; Ramsay, Donald M.; Nilsson, Lars P. (NGU Bulletin (433), Journal article, 1997)
    • Opportunities in development of Mineral Resources in Norway 

      Sturt, Brian A.; Heldal, Tom; Neeb, Peer-Richard; Barkey, Henri (NGU-Rapport (95.116), Report, 1995)
      Frie emneord: Infrastruktur. The report describes the Norwegian mineral extractive industry, and its principal products especially those for export. Opportunities for future development are outlined. The natural and ...
    • Revisions of the tectonostratigraphy of the Otta - Røros tract 

      Sturt, Brian A.; Bjerkgård, Terje; Ramsay, Donald M. (NGU Bulletin (433), Journal article, 1997)
    • Stratigraphy of the Otta-Vågå tract and regional stratigraphic implications 

      Sturt, Brian A.; Bjerkgård, Terje; Ramsay, Donald M.; Bøe, Reidulv (NGU Bulletin (427), Journal article, 1995)
    • Tectonometamorphic development of Devonian rocks of western Solund, and regional implications. 

      Braathen, Alvar; Sturt, Brian A. (NGU-Rapport (99.033), Report, 1999)
      Many modern accounts of Devonian rocks of western Norway, which emphasise the extensional phenomena affecting them, tend to ignore or gloss over the deformation and metamorphism which these rocks have suffered during ...
    • The alkaline complex of the Breivikbotn area, Sørøy, Northern Norway. 

      Sturt, Brian A.; Ramsay, Donald M. (NGU (231), Journal article, 1965)
      The alkaline rocks of the Breivikbotn area have been emplaced into highly folded and metamorphosed igneous and sedimentary rocks during the period of the Caledonian orogeny. They form an integral part of the complicated ...
    • The Gudbrandsdalen Antiform - a major Late Caledonian structure 

      Sturt, Brian A.; Ramsay, Donald M. (NGU Bulletin (433), Journal article, 1997)
    • The structure and regional setting of the Skei Group, Leka, north-central Norway 

      Sturt, Brian A.; Ramsay, Donald M. (NGU Bulletin (426), Journal article, 1994)
      The unconformity between the metasedimentary Skei Group and subjacent ophiolite on Leka has important implications for the tectonostratigraphy of the region. As a distinctive marker horizon, it permits correlations within ...
    • The style of deformation in the Devonian rocks on Hitra and Smøla, Central Norway. 

      Bøe, Reidulv; Atakan, Kuvvet; Sturt, Brian A. (NGU Bulletin (414), Journal article, 1989)
      The Old Red Sandstone sequence in the Outer Trøndelag Region comprise conti-nental conglomerates, sandstones and mudstones of latest Silurian to MiddleDevonian age. During a Late Devonian tectonic phase (Solundian Phase) ...

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