old volcanic rock

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• Old Town, Edinburgh — Old and New Towns of Edinburgh * UNESCO World Heritage Site …   Wikipedia

• rock — rock1 W2S2 [rɔk US ra:k] n ▬▬▬▬▬▬▬ 1¦(stone)¦ 2¦(music)¦ 3 (as) solid/steady as a rock 4 be on the rocks 5 scotch/vodka etc on the rocks 6¦(sweet food)¦ 7¦(drug)¦ 8 be (stuck) between a rock and a hard place 9 get your rocks off …   Dictionary of contemporary English

• Old Portal de Mercaderes (Mexico City) — View of west side of Zocalo Old Portal de Mercaderes in the historic center of Mexico City was and is the west side of the main plaza (otherwise known as the Zócalo ). This side of the plaza has been occupied by commercial structures since the… …   Wikipedia

• Old Sacramento State Historic Park — Old Sacramento Historic District U.S. National Register of Historic Places U.S. National Historic Landmark District …   Wikipedia

• Old Woman Mountains Wilderness — IUCN Category Ib (Wilderness Area) …   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

• Old Town San Diego State Historic Park — This article is about the California state historic park. For the neighborhood of San Diego, see Old Town, San Diego. For the Old Town transit center, see Old Town Transit Center (MTS Transit Center). Old Town San Diego Historic District U.S.… …   Wikipedia

• Volcanic belt — [ Trans Mexican Volcanic Belt in Mexico ] A volcanic belt is a large volcanically active region. Other terms are used for smaller areas of activity, such as volcanic fields. Volcanic belts are found above zones of unusually high temperature (700… …   Wikipedia

• volcanic glass — a natural glass produced when molten lava cools very rapidly; obsidian. [1830 40] * * * Any glassy rock formed from lava or magma that has a chemical composition close to that of granite. Such molten material may reach very low temperatures… …   Universalium

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