- rhomb-porphyry
- петр. ромбен-порфир
* * *ромбен-порфир
English-Russian dictionary of geology. 2011.
rhomb-porphyry
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Porphyry (geology) — Porphyry is a variety of igneous rock consisting of large grained crystals, such as feldspar or quartz, dispersed in a fine grained feldspathic matrix or groundmass. The larger crystals are called phenocrysts. In its non geologic, traditional use … Wikipedia
Latite — is an igneous, volcanic (extrusive) rock, with aphanitic aphyric to aphyric porphyritic texture. Its mineral assemblage is usually alkali feldspar and plagioclase (in a ratio < 1:4). Quartz is absent in a feldspathoid bearing latite, and olivine… … Wikipedia
Trachyte — is an igneous, volcanic rock with an aphanitic to porphyritic texture. The mineral assemblage consists of essential alkali feldspar; relatively minor plagioclase and quartz or a feldspathoid such as nepheline may also be present. (See the QAPF… … Wikipedia
Oslo Graben — The Oslo Graben or Oslo Rift is a graben formed during a geologic rifting event in Permian time, the last phase of the Variscan orogeny.[1] The main graben forming period began in the late Carboniferous, which culminated with rift formation and… … Wikipedia
Volcanic rock — is an igneous rock of volcanic origin. Texture Volcanic rocks are usually fine grained or aphanitic to glassy in texture. They often contain clasts of other rocks and phenocrysts. Phenocrysts are crystals that are larger than the matrix and are… … Wikipedia
List of rock types — This page is intended as a list of all rock types. NOTOC A : Amphibolite: Andesite: Anorthosite : Anthracite: Aplite: Argillite: Arkose B : Banded iron formation: Basalt: Basanite: Blueschist: Boninite: Breccia C : Carbonatite: Cataclasite: Chalk … Wikipedia
Mølen — A cairn in Mølen, with a human for scale. Mølen is Norway s largest beach of rolling stones, and is a part of Vestfoldraet: the terrain left behind after the end of the most recent Ice age around 10,000 years ago. The wind and sea have lashed the … Wikipedia
Norwegian trench — Map of the North Sea with Norwegian trench The Norwegian trench or Norwegian channel (Norwegian: Norskerenna; Danish: Norskerenden) is an elongated depression in the sea floor (but not a true oceanic trench) off the southern coast of Norway. It… … Wikipedia
