Browsing NGU-publikasjoner by Title
Now showing items 5303-5322 of 7138
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Rb-Sr dating of cleaved mudstones from eastern and western parts of the Gaissa Nappe Complex, Finnmark
(NGU-Rapport (2002.110), Report, 2002)Samples of pervasively cleaved mudstones and claystones from two different parts of the Gaissa Nappe Complex in Finnmark were subjected to Rb-Sr analytical investigation with the aim of trying to dtermine the metamorphic ... -
Rb-Sr dating of strain-induced mineral growth in two ductile shear zones in the Western Gneiss Region of Nord-Trøndelag, Central Norway.
(NGU Bulletin (413), Journal article, 1988)In the Bjugn district of the northern part of the Western Gneiss Region,Nord-Trøndelag, a basement gneiss - cover nappe boundary is marked by a thickzone of ductile shearing, in which a layer-parallel mylonitic fabric ... -
Rb-Sr isochron age of Caledonian acid volcanics at Stord, western Norway.
(NGU (300), Journal article, 1973)An eight-point Rb-Sr whole-rock isochron from Caledonianrhyolites at Stord in western Norway defines an age of 455 +- 5 m.y.and an initial 87Sr\/86Sr of 0.7071 +- 0.00018. This places thevolcanism in the Upper Ordivicium, ... -
Rb-Sr isotope systematics in the magmatic rocks of the Oslo rift.
(NGU Bulletin (418), Journal article, 1990)Fifty-one different units of Oslo Rift magmatic rocks have been investigated by the Rb-Sr isotope method. Isochron ages obtained for all but three of the units vary between 295 Ma and 240 Ma. The ages from the southern ... -
Rb-Sr study of rapakivi granite and augen gneiss of the Risberget Nappe, Oppdal, Norway.
(NGU (380), Journal article, 1983)Rb-Sr dating of rapakivi granite and associated augen gneiss of the Risberget Nappe suggests that the rocks are post-Svecokarelian intrusions that were strongly foliated during Caledonian orogeny. Microstructures of the ... -
Rb-Sr, U-Pb and Sm-Nd isotopic dates from Precambrian rocks of Finnmark.
(NGU Bulletin (403), Journal article, 1985)Rb-Sr and Sm-Nd whole-rock dates, and Rb-Sr biotite dates are presented forpre-Caledonian rocks of Finnmarksvidda, the Alta-Kvænangen window. andSørvaranger. A Sm-Nd whole-rock date of 2085+-85 Ma was obtained from koma-tiites ... -
Recent changes in environmental conditions in the southwestern Kattegat, Scandinavia
(NGU Bulletin (430), Journal article, 1996)Short cores (20-30 cm) were taken from two sites in the southwestern Kattegat at similar water depths )<20 m; under the pycnocline but with different exposures and resuspension rates ( gross sedimentation rates: 3419 and ... -
Recent observations on the southern shore of Skjervøy and the opposite coast of Kågen.
(NGU (255), Journal article, 1968) -
Recent sediment accumulation in the Norwegian Channel, North Sea
(NGU Bulletin (430), Journal article, 1996)In the Norwegian Channel 35 box cores were taken for sedimentological analysis, and 210Po a- and137Cs y-spectroscopy to determine sedimentation rates. Grain sizes were determined and X-ray photographs of the cores were ... -
Recent sedimentation rates across the Norwegian Trough
(NGU Bulletin (430), Journal article, 1996)From the systematic sampling of 20 stations of the Norwegian part of the Skagerrak in 1993, six cores were chosen for determination of recent sedimentation rates by the lead-210 method and verifications by Cs-137 depth ... -
Recommended hazard and risk classification system for large unstable rock slopes in Norway
(NGU-Rapport (2012.029), Report, 2012)Catastrophic failure of large rock slopes in Norway has several times per century led to rock avalanches or large rock falls, which impacted into settlements directly, but also caused either a displacement wave when impacting ... -
Reconnaisance of the Tømmerås Anticline.
(NGU (227), Journal article, 1964)A granitic basement dome, overlain with unconformity by Palaeozoic and perhaps Eocambrian rocks, is described. The flat-lying \"leptites\" and intercalated sediments, which comprise the basement, were little affected by ... -
Reconnaissance structural geological mapping and field XRF-analyses of the Ulveryggen copper deposit, Finnmark, Norway.
(NGU-Rapport (2007.064), Report, 2007)Reconnaissance structural geological mapping and field XRF-analyses with a portable XRF-analyzer were carried out at the now closed Ulveryggen copper mine, Repparfjord Window, Finnmark. The goals of the study were to better ... -
Reconnaissance studies of gneisses, ultrabasites, eclogites and anorthosites in Outer Nordfjord, Western Norway.
(NGU (241), Journal article, 1966)A reconnaissance map of the geology of Outer Nordfjord is presented with some new structural and petrographic data. Mesoscopic folds have often steep axes or curved axial planes which indicate rather plastic type of ... -
Reconnaissance study of regional geology and mineralization in the Bamble region, southern Norway.
(NGU-Rapport (85.131), Report, 1985)Rapporten omhandler Arco Norway Minerals A\/S's Bamble-prosjekt fra årene 1983-85, de enkelte bergartstypene og deres opprinnelse. Spesiell vekt er lagt på de ekshalitive bergarter og tilknyttet mineralisering, bl.a. gull. ... -
Reducing noise in radiometric multi-channel data using noise-adjusted singular value decomposition (NASVD) and maximum noise fraction (MNF)
(NGU-Rapport (2005.014), Report, 2005)The airborne gamma-ray spectrometric method is primarily used for the detection of ore bodies, fallout from nuclear accidents and as a lithological mapping tool. Modern gamma-ray spectrometers can record at least 256 ... -
Redusert vannføring i borebrønn, Susort i Tysvær kommune.
(NGU-Rapport (85.182), Report, 1985)En 32,5 m dyp borebrønn fra 1960 har forsynt 8 husstander med artesisk grunnvann. Etter driften av gasstunnel nær Kårstø forsvant overtrykket på grunnvannet, og brønnen gir for lite vann. Mulig årsakssammenheng blir ... -
REE potential of bedrock on Nordkinn Peninsula, Finnmark
(NGU-Rapport (2013.033), Report, 2013)Recently, NGU carried out a low-density soil sampling project on the Nordkinn Peninsula, Finnmark, Northern Norway, that outlined regional-scale anomalies for the REE Peninsula (Reimann et al., 2012). The present report ... -
Referansesystem for stedfestede data
(NGU-Rapport (84.056), Report, 1984)En referanse er korte og oftest standardiserte opplysninger om data. Rapporten tar for seg referanser til data innen områdene naturmiljø og naturressurser. Disse dataene er vanligvis stedfestet. Rapporten understreker ... -
Refinement of phosphorus determination in quartz by LA-ICP-MS through defining new reference material values
(NGU-Rapport (2007.001), Report, 2009)The aim of this study is to improve the quality of laser ablation inductively coupled mass spectrometry (LA-ICP-MS). Over the last decade the Geological Survey of Norway has routinely performed trace element analyses of ...