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The aim of the present study was to obtain more data regarding geological relations between the massive sulfide ore and wall rock, especially the microcline gneiss, the genesis of which is a subject of discussion. Another objective was to get more data about the distribution of gold in the ore and wall rocks. The choice of mapping target was influenced both by geological relationships and interests of the mining company.
The report is a guidebook for a one day excursion in connection to the COPENA meeting held at NGU 18-22 August 1997. The excursion route is Trondheim- Orkanger-Lensvik-Agdenes-The report is a guidebook for a one day excursion in connection to the COPENA meeting held at NGU 18-22 August 1997. The excursion route is Trondheim- Orkanger-Lensvik-Agdenes-Ørlandet-Hasselvika-Rissa-Rørvik-Trondheim.
The report is a guidebook for a four day excursion in connection to the COPENA meeting held at NGU 18.-22.Aug.1997. The first day of the excursion will visit localities in the Caledonian Nappes at Oppdal, and then continue over Sogne- fjell to Sogndal with stops along the contacts to the Jotun Nappe and in the nappe itself. The second day the excursion will continue through the Western Gneiss Region to Måløy with several stops in the Proterozoic gneisses.
This report provides guidance for systematisation of geological data from the individual deposits to be stores in the Ore Data Base. This is built on NGUs former data base (FORIBA) (i.e.ore deposits registered in the Mineral Deposit Archive at NGU) which contained deposit numbers given by Foslie and Paulsen. The instruction is derived from the screen pictures to the database, and describes all fields which can be filled out. Options are given for most of the fields.
An international team consisting of scientists from the Geological Survey of Lithuania, the Geological Survey of Norway, the Canadian Department of National Defence and the Norwegian Defence Research Establishment were awarded a NATO Scientific Affairs Division Grant for the development of a methodology for investigation of soil/groundwater contamination at former military sites in Lithuania. The results of part two of this study concerning radiological aspects are presented in this report.
IGCP project 371 COPENA (Structure and Correlation of the Precambrium in NE Europe and the North Atlantic Realm) is a major current research and corre- elation venture in the North Atlantic Region and the European Precambrian craton. In 1997 the annual meeting of COPENA was arranged at the Geological Survey of Norway in Trondheim, Norway. The meeting focussed on recent advances in understanding the evolution the Proterozoic orogenic belt.
During October and November, 1996, an airborne geophysical reconnaissance survey was carried out over the southwest corner of Eritrea. The NORAD-funded project was a collaboration between the Geological Survey of Norway and the Eritrean Geological Survey. Ten-thousand line-kilometers of radiometric, magnetometric, and electromagnetic data were acquired using a fixed-wing air- craft from the Geological Survey of Finland and operated by their personell.
A combined geological, geophysical and geochemical exploration project aimed at finding new ore reserves in the vicinity of the Bleikvassli mine, Nordland county was initiated by NGU in 1993. A number of the anomalous areas detected during this regional survey were followed up with more detailed investigations. One of these was the Grasvatnet area where detailed geological mapping revealed sulphide-impregnations with restricted thickness and extent.
The Geological Survey of Norway is in the process of carrying out and inventory of hard rock aggregate deposits in coastal Norway. This report contains a catalogue of Norwegian coastal quarries at present in production areas along the coast of southern Norway. 5.8 million tons of aggregates was exported to Europe in 1966 and ca. 1 million tons was used offshore.
A total of 421 military units were built at 275 sites in Lithuania during the years of Soviet occupation. These units had an important influence on the environment of the country as many of the sites were contaminated by oil products, organic materials and chemicals. After the withdrawal of the Russian army it was necessary to urgently evaluate the extent of military pollution in order to assess possible future use of the sites for defence and/or non-mili- tary purposes.
Confidential until 31.12 2003. The Geological Survey of Norway executed a helicopter survey for Nikkel og Olivin A/S in November 1996. The survey included two small areas near Ballangen, Nordland. The total area covered approximately 150 line kilometers at a line spacing of 100 meters. Equipment operated in the survey included magnetometer and a four-frequency electromagnetic system.
During June, 1997, a helicopter geophysical survey was carried out over Krokskogen, an area immediately northwest from Oslo. The purpose of the survey was to provide geophysical information to be used with geological datao to help determine the best route for tunneling from Sandvika to Hønefoss. Approximately 900 line-kilometers of radiometric, magnetometric and electromagnetic data were acquired, coverinbg an area of approximately 180 sq km. The average flying height was 80 m.
3. og 4.november 1997 arrangerte faggruppe for geokjemi og hydrogeologi sitt 7.seminar om hydrogeologi og miljøgeokjemi på Knut S.Heiers konferansesenter ved NGU i Trondheim. 118 deltakere var påmeldt totalt med ca 90 deltakere på hver av dagene. På seminarets første dag ønsket vi på tradisjonelt vis å ta pulsen på prosjekter som er igang eller nylig er avsluttet innenfor miljøgeokjemi og hydrogeologi i Norge. Bidragene omfattet bl.a.
... i Meråkerfeltet, samt grunnvannsressurser. Det er utført geolog- iske og geofysiske undersøkelser med sikte på a finne nye ...
Skagerrak-prosjektet har vært en integrert studie av geologi,hydrografi, miljøkjemi og mikrofossil-økologi. Gjennom samarbeid mellom flere norske og to nordiske institusjoner er det i perioden 1991 til 1995 innsamlet flatedekkende batymetri, grunnseismikk og bunnprøver.
NGU utførte for Nordlandsprogrammet helikoptermålinger i 1993, 1994 og 1995 over et område ved Bleikvassli, Nordland fylke. Det ble målt total ca. 5400 profilkilometer. Disse målingene var et ledd i kartleggingen av potensielle malmreserver for Bleikvassli gruver og en ønsker å samtolke data med geologi og geokjemi. På grunn av topografien i måleområdet ble det ikke utført elektromagnetiske målinger i 1995.
Geological description of well logs, cuttings and surface samples in the Tananger-Sandnes area was carried out in order to gain a wider understanding of the Caledonian nappe sequences. The upper part of the Jæren Nappe Complex comprises gneisses, amphibolite, marble and calc-silicate gneiss. This may be equivalent to the mica gneiss and minor calcite marbles seen in the NSD-1 well.
Cores from two stations in the Tampen area, in the Norwegian Trench west of Florø, have been analysed (geochemistry, sedimentology, physical properties) and dated (210Pb-dating). One station was located 1000 m downstream, northeast of the Snorre Field, while the other (reference) station was located 9 km to the east-northeast of the Snorre field. The downstream station was clearly influenced by drilling mud discharges, with elevated levels of Ba and Pb in the top sediments.
I forbindelse med prosjektet oppfølgende malmundersøkelser i Nord-Trøndelag, har NGU utført TFEM-målinger ved Storgaulstadhøgda og Mokk i Steinkjer kommune. Ved Storgaulstadhøgda ble det påvist en meget godt ledende dypdeleder (100- 200 m) med utstrekning ut av måleområdet. Ut fra geologi, anomalistyrke og strøklengde er anomaliårsaken vurdert til grafittskifer. I tillegg ble det påvist flere soner i et anomaliområdet i sør-øst.
"Det samlede geologiske undersøkelsesprogram for Nord-Trøndelag og Fosen" avsluttes i 1996. 10 år med geologiske undersøkelser har gitt en omfattende geologisk kunnskapsbase for Nord-Trøndelag og Fosen. Bruk av geologiske data kan ha store nytteverdier i kommunal sektor.
The chemical composition of 185 groundwater samples collected from two catchments in the extreme NE of Norway and NW of Russia over the periode April 1994 to November 1995 is reported in terms of Ag,A1,As,B,Ba,Be,Bi, Br,Ca,Cd,C1,Co,Cr,Cu,F,Fe,K,Li,Mg,Mn,Mo,Na,Ni,NO3,P,Pb,PO4,Rb,S,Sb,Se,Si, SO4,Sr,Th,Ti,T1,U,V and Zn concentrations (as determined by ICP-MS, ICP- AES and IC), pH and electrical conductance.
"Det samlede geologiske undersøkelsesprogram for Nord-Trøndelag og Fosen" avsluttes i 1996. 10 år med geologiske undersøkelser har gitt en omfattende geologisk kunnskapsbase for Nord-Trøndelag og Fosen. Bruk av geologiske data kan ha store nytteverdier i kommunal sektor.
Bedrock geology of the Altevatn-Måskanvarri area, Indre Troms, northern Scandinavian Caledonides.Lars Kristian StølenPage(s): 5-23
From Archaean to Proterozoic on Hardangervidda, south NorwayAnne Birkeland, Ellen M.O. Sigmond, Martin J.