petrographical composition

См. также в других словарях:

• Nappe — For other uses, see Nappe (disambiguation). Schematic overview of an eroded thrust system. The shaded material is the nappe. The erosional hole is called a window or fenster. The klippe is the isolated block of the nappe overlying autochthonous… …   Wikipedia

• Petrography — is that branch of petrology which focuses on detailed descriptions of rocks. Someone who studies petrography is called a petrographer. The mineral content and the textural relationships within the rock are described in detail. Petrographic… …   Wikipedia

• Tuff — (from the Italian tufo ) is a type of rock consisting of consolidated volcanic ash ejected from vents during a volcanic eruption. Tuff should not be confused with tufa , another type of rock. Volcanic ashThe products of a volcanic eruption are… …   Wikipedia

• Sanukitoid — Sanukitoids are a variety of high Mg granitoid found in convergent margin settings. The term sanukitoid was originally used to define a variety of Archean plutonic rock, but now also includes younger rocks with similar geochemical characteristics …   Wikipedia

• Greywacke — (German grauwacke , signifying a grey, earthy rock) is a variety of sandstone generally characterized by its hardness, dark color, and poorly sorted, angular grains of quartz, feldspar, and small rock fragments set in a compact, clay fine matrix …   Wikipedia

• Granulite — Granulites are fine to medium–grained metamorphic rocks that have experienced high temperatures of metamorphism, composed mainly of feldspars sometimes associated with quartz and anhydrous ferromagnesian minerals, with granoblastic texture and… …   Wikipedia

• Alphonse Francois Renard — (27 September 1842 ndash;9 July 1903), Belgian geologist and petrographer, was born at Ronse, in East Flanders, on 27 September 1842. He was educated for the church of Rome, and from 1866 to 1869 he was superintendent at the College de la Paix,… …   Wikipedia

• Turritellidae — A shell of a Turritella species Scientific classification Kingdom: Animalia …   Wikipedia

• Turritellenplatte — The Turritellenplatte of Ermingen ( Erminger Turritellenplatte near Ulm, Germany) is a type of very rich fossil bearing rock which is of particular interest to geologists and paleontologists. It occurs in a very restricted outcrop and is… …   Wikipedia

• Becke, Friedrich Johann Karl — ▪ Austrian mineralogist born , Dec. 31, 1855, Prague, Bohemia, Austrian Empire died June 18, 1931, Vienna, Austria       mineralogist who in 1903 presented to the International Geological Congress a paper on the composition and texture of the… …   Universalium

• petrography — [pɛ trɒgrəfi] noun the study of the composition and properties of rocks. Derivatives petrographer noun petrographic adjective petrographical adjective …   English new terms dictionary