Slaty gneiss
Slaty Slat"y, a. [From {Slate}.] Resembling slate; having the nature, appearance, or properties, of slate; composed of thin parallel plates, capable of being separated by splitting; as, a slaty color or texture. [1913 Webster]

{Slaty cleavage} (Min.), cleavage, as of rocks, into thin leaves or plates, like those of slate; -- applied especially to those cases in which the planes of cleavage are not parallel to the planes of stratification. It is now believed to be caused by the compression which the strata have undergone.

{Slaty gneiss} (Min.), a variety of gneiss in which the scales of mica or crystals of hornblende, which are usually minute, form thin lamin[ae], rendering the rock easily cleavable. [1913 Webster]


The Collaborative International Dictionary of English. 2000.

Look at other dictionaries:

  • Slaty — Slat y, a. [From {Slate}.] Resembling slate; having the nature, appearance, or properties, of slate; composed of thin parallel plates, capable of being separated by splitting; as, a slaty color or texture. [1913 Webster] {Slaty cleavage} (Min.),… …   The Collaborative International Dictionary of English

  • Slaty cleavage — Slaty Slat y, a. [From {Slate}.] Resembling slate; having the nature, appearance, or properties, of slate; composed of thin parallel plates, capable of being separated by splitting; as, a slaty color or texture. [1913 Webster] {Slaty cleavage}… …   The Collaborative International Dictionary of English

  • Metamorphic rock — Metamorphic redirects here. For other uses, see Metamorphic (disambiguation). Quartzite, a form of metamorphic rock, from the Museum of Geology at University of Tartu collection. Metamorphic rock is the transformation of an existing rock type,… …   Wikipedia

  • metamorphic rock — Any of a class of rocks that result from the alteration of preexisting rocks in response to changing geological conditions, including variations in temperature, pressure, and mechanical stress. The preexisting rocks may be igneous, sedimentary,… …   Universalium

  • List of rock textures — This page is intended to be a list of rock textural and morphological terms. A * Adcumulate * Agglomeritic * Adamantine a type of lustre * Amygdaloidal * Anhedral * Antitaxial veins * Aphanitic * Aplitic; aplite * Augen textured gneiss *… …   Wikipedia

  • Geology of the Iberian Peninsula — The geology of the Iberian Peninsula consists of the study of the rock formations on the Iberian Peninsula, which includes Spain, Portugal, Andorra, and Gibraltar. The peninsula contains rocks from every age from Ediacaran to Recent, and almost… …   Wikipedia

  • Harz — Mountains redirects here. For the district of the same name, see Harz (district). Harz Range Country Germany …   Wikipedia

  • Geology of Tasmania — Tasmania has a varied geological history, with the world s biggest exposure of diabase, or dolerite. Rocks from the Neoproterozoic, Paleozoic and Mesozoic time periods appear. It is one of the few southern hemisphere areas glaciated during the… …   Wikipedia

  • stone — Synonyms and related words: Irish confetti, Lydian stone, Tarmac, Tarvia, aa, abyssal rock, acorn, adamant, adamantine, adobe, agate, alexandrite, amethyst, anklet, anthraconite, aplite, aquamarine, arch, armlet, ashlar, asphalt, aventurine,… …   Moby Thesaurus

  • Fodderty —    FODDERTY, a parish, in the county of Ross and Cromarty, 2 miles (W.) from Dingwall; containing, with the villages of Auchterneed, Keithtown, and Maryburgh, the island of Balblair, and part of the quoad sacra districts of Carnoch and… …   A Topographical dictionary of Scotland

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”