fragmental deposits

См. также в других словарях:

• stratification — /strat euh fi kay sheuhn/, n. 1. the act or an instance of stratifying. 2. a stratified state or appearance: the stratification of ancient ruins from eight different periods. 3. Sociol. the hierarchical or vertical division of society according… …   Universalium

• Augustine Volcano — Augustine Volcano, 1976 Elevation 4,134 ft (1,260 m)  …   Wikipedia

• Lava — flow redirects here. For the programming anti pattern, see Lava flow (programming). For other uses, see Lava (disambiguation) …   Wikipedia

• stratovolcano — ALASKA VOLCANO OBSERVATORY GLOSSARY also called a stratocone or composite cone A steep sided volcano, usually conical in shape, built of lava flows and fragmental deposits from explosive eruptions. GLOSSARY OF VOLCANIC TERMS A generally steep… …   Glossary of volcanic terms

• 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

• Breccia — (pronEng|ˈbrɛtʃiə, ˈbrɛʃiə, it. breach) is a rock composed of angular fragments of several minerals or rocks in a matrix, that is a cementing material, that may be similar or different in composition to the fragments. A breccia may have a variety …   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

• Mount Edziza volcanic complex — Mount Edziza, one of the main volcanoes of the Mount Edziza volcanic complex Elevation …   Wikipedia

• mineral deposit — Introduction       aggregate of a mineral in an unusually high concentration.       About half of the known chemical elements (chemical element) possess some metallic (metal) properties. The term metal, however, is reserved for those chemical… …   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

• Geology of Great Britain — The Geology of Great Britain is hugely varied and complex, and gives rise to the wide variety of landscapes found across the islands. This varied geology has also meant that the island has been an important source for the formation of many… …   Wikipedia