Browsing Artikler by Title
Now showing items 678-697 of 1064
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Palaeogeography and facies distribution in the Tertiary of Denmark and surrounding areas.
(NGU (316), Journal article, 1975)A short review of the stratigraphical terminology and nomenclature of the Danish Tertiary is presented. The lower Paleocene (Danian) is lithologically similar to the Upper Cretaceous but has a more variable facies distribution, ... -
Paleogene fossils in erratic blocks from Averøy and Frei, Nordmøre, Norway
(NGU Bulletin (455), Journal article, 2016)Two erratic blocks found on Averøy and Frei in Nordmøre contain fossils of Paleocene-Oligocene age. A yellowish sandstone block found at the shore on Tjønnøya at Averøy contains a fossil decapod Palaeocarpilius sp., a genus ... -
Pb-isotope constraints on the metallogeny in the Meråker Nappe.
(NGU Bulletin (427), Journal article, 1995) -
Pegmatitten ved Liverud og Gulliksrud ca. 5 km øst for Kongsberg, Øvre Eiker.
(NGU (211), Journal article, 1960)The pegmatites at Liverud and Gulliksrud ca. 5 kms E of Kongsberg, Øvre Eiker: A brief description of the pegmatites and their structural relationship to the adjacent banded gneisses is given. Some technical and economic ... -
Permeability development during hydrofracture propagation in layered reservoirs.
(NGU Bulletin (439), Journal article, 2002)Hydrofractures are generated by internal fluid overpressure and together with shear fractures, contribute significantly to the permeability of water, oil or magma reservoirs. We use boundary-element models to explore the ... -
Permian rocks and faulting in Sandsvær at the western margin of the Oslo region.
(NGU (300), Journal article, 1973)In the Sandvær area, a Permian quartz conglomerate and great thicknesses of both the B1-basalt and the rhomb porphyry RP2 are found above the Ringerike sandstone and the underlying Cambro-Silurian sediments. The younger ... -
Petrochemistry and origin of the Raudhamaren Ultramafites, Jotunheimen.
(NGU (300), Journal article, 1973)The ultramafites show gradual petrochemical variation and Mg\/Feratios indicative of crystallisation differentiation from stratiformtype mafic magma series. The country rocks with which they are inprimary association, ... -
Petrochemistry and palaegeographic setting of the Ordovician volcanic rocks of Smøla, Sentral Norway.
(NGU (359), Journal article, 1980)The Arenig-Llanvirn volcanic rocks of Smøla are distinctly calc-alkaline in their chemistry. The palaographic setting focuses attention on certain problems regarding lithostratigraphic correlation within the now fragmented ... -
Petrographic examination of Norwegian glaciofluvial aggregates: interpretation of mechanisms leading to high contents of cataclastic rocks
(NGU Bulletin (428), Journal article, 1995)Endel av artikkelen omhandler Verran og Mosvik i Nord-Trøndelag, kartblad 1622-I, Verran. Norwegian glaciofluvial aggregates have been examined microscopically and classified according to a newly established petrographic ... -
Petrography and metamorphism in the Precambrian rocks of the Magnor area, S. Norway : Kongsvingerfeltets geologi
(NGU (246), Journal article, 1967) -
Petrography and metamorphism in the Precambrian rocks of the Magnor area, S. Norway.
(NGU (246 A), Journal article, 1967)The rocks of the Magnor area comprise various red and grey gneisses, amphibolites and red, unfoliated granites. The gneisses and amphibolites most probably were sediments and basic intrusives, respectively, metamorphosed ... -
Petrography and structural history of the Caledonian rocks north of Haukelisæter, Hardangervidda.
(NGU (314), Journal article, 1974)The main features of the geology of the Caledonian nappe front north of Haukelisæter are described. The Precambrian basement in this area is overlain by an autochthonous\/parautochthonous sequence in the east and by ... -
Petrography of the Gula Group in Hessdalen, Southeastern Trondheim region, with special reference to the paragonitization of andalusite pseudomorphs.
(NGU (304), Journal article, 1974)Al-rich pelites from Hessdalen, SE Trondheim region, Central Norway, belonging to the Cambrian Gula Group, are described petrographically. The schists carry abundant porphyroblasts of staurolite, garnet, kyanite and ... -
Petrography of the Levang Peninsula (Kragerø, Norway).
(NGU (157), Journal article, 1942)An area within the archean Bamble formation, southern Norway, has been mapped. A description of the rock types occuring in the area is given. The Levang oligoclase granite in the southern part of the mapped area is surrounded ... -
Petrological studies of the Neiden granite complex.
(NGU (237), Journal article, 1966)The Neiden granite complex fits well into Raguin's group of \"anatectic granites with suites of migmatites\". In this area, supracrustals of the Bjørnevatn group have, together with their gneissgranitic basement, been ... -
Petrology and geochemistry of high-grade metamorphic and igneous rocks on Langøy, northern Norway.
(NGU (207), Journal article, 1960)The rocks on Langøy have been considered as representing an igneous rock series including metamorphic sedimentary rocks of \"Caledonian type\". The present work shows that they are for the most part high-grade metamorphic ... -
Petrology and isotope geology of the Hunnedalen Monzonoritic Dyke Swarm, SW Norway: a possible late expression of Egersund Anorthosite magmatism
(NGU Bulletin (434), Journal article, 1998)The widest and northernmost dyke of the post-tectonic Late Proterozoic Hunnedalen Monzonoritic Dyke Swarm has been studied petrographically, chemically (major and trace element) and isotopically (Rb-Sr; Sm-Nd; K-Ar) toghether ... -
Petrology and metallogeny associated with the Tryvann Granite Complex, Oslo Region.
(NGU Bulletin (423), Journal article, 1992)The Tryvann Granite Complex (TGC) comprises four separate intrusive bodies within the Oslo Graben. It constitutes a differentiated suite of young (240- 245 Ma) alkaline quartz syenites and granites derived from a strongly ... -
Petrology of differential gabbro sheets in the Altenes tectonic window, North Norway.
(NGU Bulletin (414), Journal article, 1989)The petrography of two differentiated gabbro sheets in the low-grademetamorphic Karelian supracrustal sequence of the Altenes Tectonic Window isdescribed. The intrusion have generally undergone extensive deuteric alter-ation. ...