Browsing NGU Open Archive by Title
Now showing items 81-100 of 7131
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Acidification of groundwater in the Bohemian Massif.
(NGU Bulletin (422), Journal article, 1992)An investigation of regional groundwater acidification in the Krusne Hory mountains of northern Bohemia has been carried out. It is based on a comparison of two groundwater chemistry data sets, from the years 1955-1969 ... -
Acquisition, processing and interpretation of snow-streamer seismic profiles in Masi and Sennalandet, Finnmark, northern Norway
(NGU-Rapport (2021.004), Report, 2021)Two snow-streamer profiles were acquired by the University of Bergen in March and April 2012within the programme \u2018Mineral Resources in Northern Norway - MINN\u2019. The two profiles arelocated in the Masi and Sennlandet ... -
Action map for tunnel planning, Oslofjord - Telemark region: Mapping deeply weathered weakness zones
(NGU-Rapport (2016.015), Report, 2016)Joints and fractures were weathered during a sub-tropical climate regime and thus may contain smectite and kaolinite. The presence of such minerals prohibits groundwater flow in fracture and fault zones. The clay-bearing ... -
Ad. grunnvannsundersøkelser i Malmedalen
(NGU-Rapport (O-76294b), Report, 1977) -
Adamsfjord og Ul'lugai'sa. Beskrivelse til de berggrunngeologiske kart 2135 I og 2135 II - M 1:50 000 (med fargetrykt kart).
(NGU; Skrifter (381; 40), Journal article, 1983)Descriptions are presented of the different rock-types occurring in either autochthonous or allochthonous position within the confines of these two map-sheets. Five principal geological or tectonostratigraphical elements ... -
Aeromagnetic and gravimetric interpretation of regional structural features in the Caledonides of West Finnmark and North Troms, Northern Norway.
(NGU Bulletin (419), Journal article, 1990)Forkortet.Interpretation of aeromagnetic and gravity data from Finnmark and North Tromshas resulted in a new map of depth to Precambrian basement. The integratedinterpretation of the data shows that the Seiland Igneous ... -
Aeromagnetic basement complex mapping north of latitude 62°N, Norway.
(NGU (316), Journal article, 1975)The Geological Survey of Norway (NGU) has conducted aeromagnetic measurements over Norway since 1959, and to date approximately 90 % of the country has been covered with 435,000 line kilometres of such measurements. Since ... -
Aeromagnetic investigations on the continental shelf of Norway, Stad-Lofoten (62-69°N).
(NGU (266), Journal article, 1970)An aeromagnetic isogram map based on measurements by Norges geologiskeundersøkelse 1965-67 is presented and interpreted.The map reveals several interesting geological features, the most important ofwhich is the existence ... -
Age and location of late Bølling - early Allerød ice-marginal substages in Mid-Norway - Outer Coast and Tingvoll, based on mapping and a compilation of 14C dates
(NGU-Rapport (2020.010), Report, 2020)The Outer Coast (OC)-Tingvoll ice margins in Mid Norway do not show continuous lines of ice marginal deposits (moraines, ice contact deltas, etc.) (Fig. 1), they appear rather as discontinuous lines of correlated deposits ... -
Age and petrogenesis of the Tinn granite, Telemark, South Norway, and its geochemical relationship to metarhyolite of the Rjukan Group.
(NGU Bulletin (440), Journal article, 2002)The Tinn granite is a Mid Proterozoic, foliated pluton, situated in the central part of the Telemark Sector, South Norway. It is spatially associated with metarhyolite belonging to the Tuddal Formation of the Rjukan Group ... -
Age determination from the Trondheim Region Caledonides, Norway: a preliminary report.
(NGU (288), Journal article, 1973)Twenty-four potassium-argon age determinations have been made on metamorphic minerals and whole-rocks (phyllites) from the Caledonides of the Trondheim region, Norway. Nineteen of the apparent ages fall between 438 and 402 ... -
Age determination of Norwegian minerals up to March 1964.
(NGU (228), Journal article, 1964)A summary of absolute age determination of Norwegian minerals and rocks up to March 1964. Map of loclities, diagrams and analysis of the data. -
Age determinations from the Iveland-Evje area, Aust-Agder.
(NGU (300), Journal article, 1973)A Rb\/Sr isochron age determination on intrusive granite and monzonite from the Iveland-Evje area gave an age of 1038+- 43 m.y. Biotite from the granite dated by the K\/Ar method gave an age of 845+-60 m.y. These values ... -
Age of gneissic rocks in the Caledonian nappes of the Alta district, northern Norway
(NGU Bulletin (403), Journal article, 1985)Result of a Rb-Sr geochronological investigation are presented which confirm the Precambrian age of gneisses forming parts of the Skillefjord and Nalganas Nappes of the West Finnmark Caledonian allochthon. In the case of ... -
Age of the Krossnes Granite, West Norway
(NGU Bulletin (413), Journal article, 1988)Rb-Sr isotope whole-rock dating of the Krossnes Granite has yielded an isochron age of 430 \u00B1 6 Ma with I.R. = 0.07066 \u00B1 0.0005, interpreted as the age of intrusion. This age is close to that of the Håkre Granite ... -
Age of the Younger Dryas ice-marginal substages in Mid-Norway - Tautra and Hoklingen, based on a compilation of 14C-dates
(NGU Bulletin (454), Journal article, 2015)The ice-marginal Tautra and Hoklingen Substages in the Trøndelag counties, Mid-Norway, have for a long time been referred to as of early and late Younger Dryas (YD) age, respectively. The basis for this is the regional ... -
Aggregate investigations in the Gulestø area in Bremanger.
(NGU-Rapport (99.085), Report, 1999)As a commissioned project for NOR Engineering AS\/Bremanger Aggregates AS NGU has made a preliminary examination of Devonian sandstones in an area to the west of Gulestø in Bremanger municipality. NGU has collected and ...