| | Journal (article/letter/editorial) | Slack Bedded jaspers of the Ordovician Løkken ophiolite, Norway: seafloor deposition and diagenetic maturation...(red hematitic chert) in the Ordovician Løkken ophiolite of Norway are closely associated with volcanogenic...laterally peripheral to the large Løkken (25–30 Mt) and small Høydal (0.1 Mt) VMS deposits, and are exposed...(&) Geological Survey of Norway, Leiv Eirikssons vei 39, 7491 Trondheim, Norway E-mail: tor.grenne@ngu...western Trondheim region of central Norway, the Ordovician Løkken ophiolite (Fig. 1) contains abundant | | | Journal (article/letter/editorial) | volcanogenic sulphide occurrence in the Løkken greenstones, Central Norway KENNETH GEORGE McQUEEN McQueen,...volcanogenic sulphide occurrence in the Løkken greenstones, Central Norway. Norsk Geologisk Tidsskrift. Vol...with minor Cu and Zn: chalcopyrite- and sphalerite-rich pyritic ores; and chalcopyrite-pyrrhotite stringer...copper-zinc deposit is a small, green deposit in Norway; however, after more than 300 stone-hosted, pyritic... 8.5 km west of Løkken Verk in the western removed and mining operations at Løkken and in Trondheim | | | Journal (article/letter/editorial) | Geochemistry of Jasper Beds from the Ordovician Løkken Ophiolite, Norway: Origin of Proximal and Distal Siliceous...Exhalites TOR GRENNE† Geological Survey of Norway, N-7491 Trondheim, Norway AND JOHN F. SLACK U.S. Geological...kilometers along strike in the Ordovician Løkken ophiolite, Norway. These siliceous beds are closely associated...hydrothermal plume(s). Thick jasper layers near the Høydal VMS orebody show distinct positive As/Fe and Sb/Fe...thick jasper beds near the Løkken VMS orebody, which is larger than the Høydal orebody by more than two | | | Journal (article/letter/editorial) | silicate, sulfide, and oxide iron formations in Norway: evidence for fluctuating redox states of early...volcanogenic massive sulfide (VMS) deposits in Norway provide evidence of early mineral assemblages and...H2) produced from large seafloor systems such as Løkken may have changed the redox state of seawater in...Geological Survey of Norway (NGU), Postal Box 6315 Torgarden, NO-7491 Trondheim, Norway 2 U.S. Geological...sulfide iron formations from central and western Norway, for use in evaluating the redox states of local | | Dodd, Matthew S., Papineau, Dominic, Grenne, Tor, Slack, John F., Rittner, Martin, Pirajno, Franco, O’Neil, Jonathan, Little, Crispin T. S. (2017) Evidence for early life in Earth’s oldest hydrothermal vent precipitates. Nature, 543 (7643) 60-64 doi:10.1038/nature21377 | Journal (article/letter/editorial) | The presence of well-preserved, 20–3,000-μm chalcopyrite crystals within the NSB jasper and carbonate... 3Geological Survey of Norway, Leiv Eirikssons vei 39, 7040 Trondheim, Norway. 4U.S. Geological Survey...Nature. All rights reserved. Article RESEARCH a b Løkken 40 μm 50 μm 40 μm c d 25 μm d 70 μm 100...images of haematite filaments from the NSB and Løkken jaspers. a, Filaments from the NSB attached to...with nanoscopic haematite. b, Filaments from the Løkken jaspers coated with nanoscopic haematite and attached | | | Journal (article/letter/editorial) | minerals: sphalerite (ZnS), galena (PbS) and chalcopyrite (CuFeS2) (Marshall and Gilligan, 1987; Griffin...deposits metamorphosed at temperatures <425ºC: Løkken in Norway (Grenne, 1989a), Baia Borsa in Romania (Cook...polymetallic stratiform sulphide lenses and associated chalcopyrite-pyrite-quartz stockworks located in Anglesey...Deposit 896 The Løkken ore deposit is located in the Trondheim district, Norway (Grenne, 1986, 1989a...investigated in this study (Parys Mountain: 1, Løkken: 2, Greens Creek: 3 and Baia Borsa: 4). The mean | | Moeller, Kirsten, Schoenberg, Ronny, Grenne, Tor, Thorseth, Ingunn H., Drost, Kerstin, Pedersen, Rolf B. (2014) Comparison of iron isotope variations in modern and Ordovician siliceous Fe oxyhydroxide deposits. Geochimica et Cosmochimica Acta, 126. 422-440 doi:10.1016/j.gca.2013.11.018 | Journal (article/letter/editorial) | University of Bergen, Allégaten 41, 5007 Bergen, Norway b Department of Geosciences, University of Tübingen...c Geological Survey of Norway, Leiv Eirikssons vei 39, 7040 Trondheim, Norway Received 31 October 2012;...in Ordovician jasper beds from the Løkken ophiolite complex, Norway, which have been interpreted to represent...beds are derived from the 490 Ma old Løkken ophiolite complex, Norway. They consist of fine-grained haematite...further used to address the question whether the Løkken jaspers could have formed from diffuse hydrothermal | | | Journal (article/letter/editorial) | the Uppermost Allochthon (UmA) mostly in northern Norway. The Neoproterozoic and Cambrian history of this...á P.M. Ihlen Geological Survey of Norway, N-7491 Trondheim, Norway e-mail: tor.grenne@ngu.no F.M. Vokes...Engineering, Hùgskoleringen 6, N-7491 Trondheim, Norway host to two characteristic types of stratabound-stratiform...20 Mt were known at the now abandoned Tverrfjell mine and the recently closed Joma deposit. Minor Cu-Ni...higher levels in the nappe pile, in southwestern Norway, the western Trondheim Region, the western Grong | | | Journal (issue) | publishing channel of all scientific meetings held in Norway with a geological content. Editors: Hans Arne Nakrem...Norges Geologiske Undersøkelse N‐7491 Trondheim, Norway E‐mail: ngf@geologi.no www.geologi.no Published...Norges Geologiske Undersøkelse N‐7491 Trondheim, Norway E‐mail: ngf@geologi.no www.geologi.no NGF Abstracts...Abstracts and Proceedings Of the Geological Society of Norway Number 1, 2017 Vinterkonferansen 2017 Oslo, January...Petroleum Guri V. Ganerød, Geological Survey of Norway Dag Helland Hansen, Aker BP Jean Sebastien L’Herureuz | | | Report (issue) | post-depositional processes in uranium ores at the Stanleigh mine, Elliot Lake, Ontario, Canada.....................botryoids at a 350 Ma fossil warm spring at the Tynagh mine, Ireland: (A) The top surface (field of view measures...dominates in pillow lavas, often associated with chalcopyrite in discordant quartz veins and veinlets (Appel...from the Fairview mine in an ESE direction out of the orebody toward the Sheba mine, in the central part...origin of 3.4 to 3.1 Ga pyrite at the Princeton gold mine, Barberton Greenstone Belt, South Africa: Precambrian |
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