
Kristian DrivenesNorges geologiske undersøkelse · Marine Geology
Kristian Drivenes
PhD
About
28
Publications
6,589
Reads
How we measure 'reads'
A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text. Learn more
191
Citations
Publications
Publications (28)
Quartz–tourmaline orbicules are unevenly distributed in the roof segment of the Land's End granite, SW England. This study shows that the orbicules formed from an immiscible hydrous borosilicate melt produced during the late stages of crystallization, and differentiates tourmaline formed by dominantly magmatic and dominantly hydrothermal processes....
The megacrystic, coarse-grained granite of the Land’s End granitic complex, SW England, has been investigated by analyzing fluid inclusions, trace elements, and cathodoluminescence textures of quartz. By applying the TitaniQ geothermobarometer together with the cathodoluminescence textures, a two-stage emplacement process is proposed. K-feldspar an...
Multiple generations and growth stages of tourmaline from a hydrothermal quartz-tourmaline rock from the Land’s End granite, SW England, were investigated by Electron Probe MicroAnalyzer (EPMA) to reveal details of the variation in tourmaline composition with emphasis on the distribution of Sn. Tourmaline shows a large range in chemical composition...
We document well-preserved extensional shear zones in a rift-related lower-crustal magmatic conduit system, the Reinfjord Ultramafic Complex. Deformation along the shear zones led to seismic events below the seismogenic zone of continental rifts (10–15 kbar and 850–1150 °C), similar to events observed along the East African Rift today. Processes le...
Distinct zoning patterns in cassiterite from a quartz-tourmaline rock in SW England can clearly be observed in the optical microscope. They appear in (near-) basal sections and are reminiscent of sector zoning found in other minerals such as zircon, titanite and clinopyroxene. The model for sector zoning in minerals involves contrasting incorporati...
Upper Triassic (Carnian) sandstones of the De Geerdalen Formation cored south of the island of Kvitøya (80°N), north-easternmost Svalbard, are described in terms of sedimentary facies and petrography and compared regionally in the northern Barents Shelf. The succession off Kvitøya is characterized by its great thickness and is dominated by deltaic...
The Gállojávri intrusion is a small and variably altered ultramafic body in the Karasjok Greenstone Belt (KGB), Artic Norway. Together with Karenhaugen and Porsvann intrusions, the Gállojávri forms part of a cluster of PGE-mineralised bodies interpreted as conduits to the KGB Palaeoproterozoic komatiites. Previous studies indicate that the komatiit...
Post-orogenic back-arc magmatism is accompanied by hydrothermal ore deposits and mineralizations derived from mantle and crustal sources. We investigate Zannone Island (ZI), back-arc Tyrrhenian basin, Italy, to define the source(s) of mineralizing hydrothermal fluids and their relationships with the regional petrological-tectonic setting. On ZI, ea...
Tourmaline from the St. Byron lobe of the Land’s End granite, SW England, was assessed by macroscopic, optical and quantitative microanalytical methods. In total, seven types of tourmaline were distinguished. The seven types reflect different crystallisation environments and stages in the magmatic-hydrothermal transition. Types 1-3 are interpreted...
Zannone is a very important island, located in the Neogene-Quaternary extensional domain of the Tyrrhenian back-arc basin, as it is the unique spot where the Paleozoic (?) crystalline basement is hypotesized to be exposed in central Apennines. The exposure of such hypothetical basement in the Zannone Island is very problematic as it implies very la...
Tourmaline is a common mineral in Sn-W mineralizations. It is commonly strongly zoned, both optically and chemically, and may host a range of trace elements. High levels of Sn have been observed in tourmaline throughout the world, whereas W is typically very low, even in mineralized areas. Tourmaline from a cassiterite-bearing quartz-tourmaline roc...
Loki’s Castle on the Arctic Mid-Ocean Ridge (AMOR) is an area of possible seafloor massive sulphide (SMS)-style mineralisation under Norwegian jurisdiction, which, due to mounting social pressure, may be a strategic future source of base and precious metals. The purpose of this study is to characterise mineralised material from a hydrothermal vent...
This paper reports the leaching of seafloor massive sulphides (SMS) from the Loki’s Castle area at the Arctic Mid-Ocean Ridge in sulphuric acid with manganese dioxide and sodium chloride. The results presented are of various leaching experiments conducted under different conditions in order to optimise the dissolution of copper and silver. It was s...
Metasomatism associated with barren quartz veins cross-cutting hornblende schist in the upper part of the metasedimentary sequence of the W- Mo-mineralized Bjellatinden area was studied using P-T modeling of the mafic schist host and alteration assemblages, fluid inclusions, and isocon diagrams. Two main alteration assemblages are associated with t...
The Paleozoic-Cenozoic Verran - and Hitra-Snaasa faults, comprise the main sutures of the giant inter crustal More-Trondelag fault zone that can be followed over 900 km from central Norway across the continental shelf 37 to Scotland. In Norway, it separates Proterozoic gneisses to the north from Caledonian nappe complexes in the south. Many deposit...