Stensundtjern ligger ved Storforshei, en hall times kjøring fra Mo i Rana. Denne mineralforekomsten er en del av en større jernmineralisering som ligger i Dunderlandsdalen. Jernmineraliseringen her har vært kjent siden før 1800 og har gjennom årenes løp vært forsøkt drevet i flere perioder. De første kildene vi har fra området er fra 1799 da Trondheims-bedriften Mostadsmarkens Jernverk gjorde krav ...

The 3D seismic enable a better understanding of phreatomagmatic activity that occurred at the Gjallar ridge in the Vøring basin, mid-Norway. Structures associated with this activity were imaged and a causality relationship was established. Those structures included hydrothermal vent complexes, sill complexes and faults. The Kai formation significantly affected by polygonal faulting that were likely ...

The hydrothermal Vannareid Cu-Zn mineralization is located on the island of Vanna, West Troms Basement Complex. It was discovered in 2008 and was subject of Store Norske Gull AS' exploration project in 2012. The mineralization is situated along the border between the Archean granitoid basement intruded by tholeiitic and calc-alkaline dykes, and the overlying Neoproterozoic metasedimentary rocks of ...

Abstract Swath bathymetry, high resolution seismic data and sediment cores were analyzed to reconstruct the Late Weichselian and Holocene sedimentary environments and glacier dynamics in Woodfjorden, Bockfjorden and Liefdefjorden, north Spitsbergen. Mega-scale glacial-lineations provide evidence of fast-flowing grounded ice draining the northwestern parts of the Late Weichselian Svalbard Barents ...

Deformation experiments of synthetic quartz–muscovite aggregates were performed to high shear strains at dislocation creep conditions in quartz. In previous studies, axial compression experiments were conducted on quartz aggregates to develop a better understanding of the relationship between flow strength and lattice preferred orientation with varying percentages of muscovite. Other analyses have ...

Debris-flow er ein type lausmasseskred som opptrer i alpine og arktiske landskap. I Noreg representerer dei ein naturfare både på Vestlandet, i Norland og i Troms. Prosessen har lenge vore studert utafor Noreg, men lite arbeid er gjort her i landet; denne oppgåva er meint å auka kunnskapen om debris-flows i Noreg, samt å vinkla den eksisterande kunnskapen mot eit typisk norsk risikoområde. Ein serie ...

Abstract This thesis focuses on establishing a causal relationship between potential fluid sources, fluid migration pathways, shallow gas accumulations and potential gas hydrates in the western part of the Hammerfest Basin, SW Barents Sea. Two 3D seismic surveys (LN0901 and ST8320R00) were used to map fluid flow, stratigraphy, structure, fluid flow and other fluid-related features along the western ...

A low-grade metamorphic ultramafic rock at the Kvaløya Island, North Norway, shows Ni content up to 2 500 ppm. Olivine is absent from the rock, and Ni is principally bonded in pentlandite, violarite and millerite. Among other sulphide minerals found in the rock are pyrite, pyrrhotite, chalcopyrite, sphalerite, galena and heazlewoodite (?). Two generations of pyrite are observed in the rock. Second ...

The geochemistry, mineralogy and associated basic rocks of the Tromsøysound iron ore field was studied for this thesis. The iron ore field is located in the Tromsø Nappe an ultra-high-pressure terrain in Troms, Northern-Norway, and has undergone some partial melting and metasomatism. The ore mineral is magnetite. The tectonic environment is investigated but inconclusive.

Det ustabile fjellpartiet, Jettan, har blitt studert med ei multidisiplinær tilnærming. Dette inkluderer strukturelle og geomorfologiske analyser i felt, studiar av sann-tid og periodisk overvaking og bruk av kart og digitale elevasjonsmodellar. Formålet har vore å avdekke indre struktur og geometri, kinematikken og kontrollerande faktorar for dei ustabile massane. Det ustabile fjellpartiet er ...