overlying rock
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Rock cycle — rocks do not remain in equilibrium and are forced to change as they encounter new environments. The rock cycle is an illustration that explains how the 3 rock types are related to each other and how processes change from one type to another over… … Wikipedia
Rock of Gibraltar — For the racehorse of the same name, see Rock of Gibraltar (horse). Rock of Gibraltar Western face of The Rock of Gibraltar, 2006 … Wikipedia
rock hole — noun : a raise in a coal mine driven from a gangway or breast to an overlying coal seam called also rock chute … Useful english dictionary
sedimentary rock — Rock formed at or near the Earth s surface by the accumulation and lithification of fragments of preexisting rocks or by precipitation from solution at normal surface temperatures. Sedimentary rocks can be formed only where sediments are… … Universalium
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
Sedimentary rock — Middle Triassic marginal marine sequence of siltstones (below) and limestones (above), Virgin Formation, southwestern Utah, USA Sedimentary rock are types of rock that are formed by the deposition of material at the Earth s surface and within… … Wikipedia
cap rock — noun : cap I 2a(3) * * * Geol. 1. a mass of anhydrite, gypsum, or limestone immediately above the salt of a salt dome. 2. an impervious stratum overlying an oil or gas bearing structure. Also, caprock. [1865 70, Amer.] * * * cap rock noun A… … Useful english dictionary
Igneous rock — Geologic provinces of the world (USGS) Shield … Wikipedia
Clastic rock — A thin section of a clast (sand grain), derived from a basalt score. Vesicles (air bubbles) can be seen throughout the clast. Plane light above, cross polarized light below. Scale box is 0.25 mm Clastic rocks are composed of fragments, or clasts … Wikipedia
Basement rock — usually refers to the thick foundation of ancient, and oldest metamorphic and igneous rock that forms the crust of continents, often in the form of granite. Basement rock is contrasted to overlying sedimentary rocks which are laid down on top of… … Wikipedia
Hogg Rock — Infobox Mountain Name= Hogg Rock Photo = Santiam9.jpg Caption = Hogg Rock, Three Fingered Jack, and U.S. 20 near Santiam Pass Elevation = convert|5080|ft|m Location = Oregon, USA Range= Cascades Prominence = Coordinates = coord|44.4220636|… … Wikipedia
