Blar i NGU Open Archive på emneord "PERM"

Viser treff 1-6 av 6

    • Geografisk fordeling av grunnstoffer i Oslo-feltet. 

      Ryghaug, Per; Ekremsæter, J. (NGU-Rapport (89.157), Report, 1990)
      Fra et tidligere innsamlet bekkesedimentmateriale fra Oslofeltet er 1000 tilfeldig utvalgte prøver tatt ut og reanalysert på 29 grunnstoffer (ICP) ved NGU. Formålet har vært å skaffe et mer homogent bakgrunnsmateriale for ...

    • Geology of the Skrukkelia molybdenite deposit, northwest margin of the Oslo Graben, Norway. 

      Sandstad, Jan Sverre; Olerud, Svein (NGU (387), Journal article, 1983)
      The Skrukklia Mo-occurence is situated in Precambrian gneisses along the northwest margin of the igneous complex of the Oslo Region. Within the mineralized area a Permian granite suite (the Aurtjern granite) intrudes the ...

    • On the variolitic structure. 

      Carstens, Harald (NGU (223), Journal article, 1963)
      The article presents detailed descriptions of the variolitic structure in selected minor intrusions and lavas. The evidence indicates that the varioles formed by liquid segregation rather than by spherulitic crystallization.

    • Palaeomagnetic dating of fault rocks from Vesterålen, Senja and Troms. Preliminary data 

      Torsvik, Trond H.; Olesen, Odleiv (NGU-Rapport (93.088), Report, 1993)
      A preliminary palaeomagnetic study has been carried out in Vesterålen, Senja and Kvaløya (Troms) in order to furnish temporal constraints on near offshore fault-activity in the Lofoten area. At Senja, two phases of faulting ...

    • Rhombeporfyr-stratigrafi vest for Holmestrand. 

      Heyer, Henrik (NGU (255), Journal article, 1968)
      Results from field work 1967 within an area of 4.5 x 6 km in the Vestfold lava plateau, Southern Oslo Region, show that the lower half of the lava series is much richer in flow than earlier realized, and consists of at ...

    • Structural interpretation of a double-folded gneiss-amphibolite sequence, Bunnefjorden, Akershus. 

      Graversen, Ole (NGU (300), Journal article, 1973)
      Garnet amphibolite bands folded together with gneiss lamellae in tight to isoclina folds are described. A structural analysis shows that the folds were formed during two separate deformation episodes. This conclusion has ...