coarse-grained clastic rocks

крупно-обломочные породы

English-Russian dictionary of geology. 2011.

Смотреть что такое "coarse-grained clastic rocks" в других словарях:

  • 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

  • Clastic dike — Vertical clastic dike, filled with coarse basaltic sand, cuts lighter colored horizontal beds composed of finer grained material. Quarter for scale. A clastic dike is a seam of sedimentary material that fills a crack in and cuts across… …   Wikipedia

  • igneous rock — Any of various crystalline or glassy, noncrystalline rocks formed by the cooling and solidification of molten earth material (magma). Igneous rocks comprise one of the three principal classes of rocks, the others being metamorphic and sedimentary …   Universalium

  • Transgression (geology) — A transgression is a geologic event during which sea level rises relative to the land and the shoreline moves toward higher ground, resulting in flooding.Transgressions can be caused either by the land sinking or the ocean basins filling with… …   Wikipedia

  • Cementation (geology) — Cementation is the process of deposition of dissolved mineral components in the interstices of sediments. It is an important factor in the consolidation of coarse grained clastic sedimentary rocks such as sandstones, conglomerates, or breccias… …   Wikipedia

  • semiconformable alteration zone — GLOSSARY OF VOLCANIC TERMS A regional zone of hydrothermal alteration typically characterized by a sheet like or cloud like geometry. Semiconformable alteration zones are generally quite extensive in permeable rock units (e.g. tuffs, medium to… …   Glossary of volcanic terms

  • 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

  • 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

  • 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

  • rock — rock1 rockless, adj. rocklike, adj. /rok/, n. 1. a large mass of stone forming a hill, cliff, promontory, or the like. 2. Geol. a. mineral matter of variable composition, consolidated or unconsolidated, assembled in masses or considerable… …   Universalium

  • Rock — /rok/, n. a male given name. * * * I In geology, a naturally occurring and coherent aggregate of minerals. The three major classes of rock igneous, sedimentary, and metamorphic are based on the processes that formed them. These three classes are… …   Universalium

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