trondhjemite — /tron ye muyt /, n. Petrol. a coarse grained igneous rock composed of quartz, plagioclase feldspar, and a small amount of biotite. [Trondhjem (now TRONDHEIM) + ITE1] * * * … Universalium
trondhjemite — /tron ye muyt /, n. Petrol. a coarse grained igneous rock composed of quartz, plagioclase feldspar, and a small amount of biotite. [Trondhjem (now TRONDHEIM) + ITE1] … Useful english dictionary
Tonalite-Trondhjemite-Granodiorite — Tonalite–trondhjemite–granodiorite (TTG) series are an aggregation of rocks that are formed by melting of hydrous mafic crust at high pressure. It is widely accepted that most Archaean granite–greenstones are dominated by TTG, although Late… … Wikipedia
Kaapvaal craton — The Kaapvaal craton (Limpopo province of South Africa), along with the Pilbara craton of Western Australia, are the only remaining areas of pristine 3.6 2.5 Ga crust on Earth. Similarities of rock records from both these cratons, especially of… … Wikipedia
Tolga (Naturstein) — Tolga (im Export Tolga White genannt[1]) ist ein norwegisches Gestein, ein Trondhjemit, der in der Nähe des Ortes Tolga abgebaut wird. Er entstand vor 430 Millionen Jahren im Silur. Inhaltsverzeichnis 1 Geologie und Vorkommen 2… … Deutsch Wikipedia
Pilbara craton — The Pilbara craton (the Pilbara province in northwest Western Australia), along with the Kaapvaal craton (the Kaapvaal province of South Africa) are the only remaining areas of pristine Archaean 3.6 2.7 Ga crust on Earth. Similarities of their… … Wikipedia
Superior craton — in the west. The western margin extends from northern Minnesota through eastern Manitoba to northwestern Ontario.The formation of the Superior craton is best explained within the context of 2.72 2.68 Ga accretion of small continental plates and… … Wikipedia
Trondhjemit — Der Trondhjemit ist ein magmatisches Gestein aus der Gruppe der Plutonite. Der Name wurde 1916 von Victor Moritz Goldschmidt nach einem Vorkommen nahe der Stadt Trondheim eingeführt[1] und bezeichnet eine helle Varietät der Tonalite.… … Deutsch Wikipedia
Baltic Shield — The Baltic Shield (sometimes referred to as the Fennoscandian Shield) is located in Fennoscandia (Norway, Sweden and Finland), northwest Russia and under the Baltic Sea. The Baltic Shield is defined as the exposed Precambrian northwest segment of … Wikipedia
Yilgarn Craton — The Yilgarn Craton is a large craton which constitutes the bulk of the Western Australian land mass. It is bounded by a mixture of sedimentary basins and Proterozoic fold and thrust belts. Zircon grains in the Jack Hills, Narryer Gneiss Terrane… … Wikipedia
