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basalt    音标拼音: [bəs'ɔlt]
n. 玄武岩

玄武岩

basalt
n 1: the commonest type of solidified lava; a dense dark grey
fine-grained igneous rock that is composed chiefly of
plagioclase feldspar and pyroxene

Basalt \Ba*salt"\, n. [L. basaltes (an African word), a dark and
hard species of marble found in Ethiopia: cf. F. basalte.]
1. (Geol.) A rock of igneous origin, consisting of augite and
triclinic feldspar, with grains of magnetic or titanic
iron, and also bottle-green particles of olivine
frequently disseminated.
[1913 Webster]

Note: It is usually of a greenish black color, or of some
dull brown shade, or black. It constitutes immense beds
in some regions, and also occurs in veins or dikes
cutting through other rocks. It has often a prismatic
structure as at the Giant's Causeway, in Ireland, where
the columns are as regular as if the work of art. It is
a very tough and heavy rock, and is one of the best
materials for macadamizing roads.
[1913 Webster]

2. An imitation, in pottery, of natural basalt; a kind of
black porcelain.
[1913 Webster]

40 Moby Thesaurus words for "basalt":
aa, abyssal rock, bedrock, block lava, brash, breccia,
conglomerate, crag, druid stone, festooned pahoehoe, gneiss,
granite, igneous rock, lava, limestone, living rock, magma,
mantlerock, metamorphic rock, monolith, pahoehoe, pillow lava,
porphyry, pudding stone, regolith, rock, ropy lava, rubble,
rubblestone, sandstone, sarsen, schist, scoria, scree,
sedimentary rock, shelly pahoehoe, stone, talus, tufa, tuff

Basalt, CO -- U.S. town in Colorado
Population (2000): 2681
Housing Units (2000): 1218
Land area (2000): 1.922180 sq. miles (4.978423 sq. km)
Water area (2000): 0.018520 sq. miles (0.047967 sq. km)
Total area (2000): 1.940700 sq. miles (5.026390 sq. km)
FIPS code: 04935
Located within: Colorado (CO), FIPS 08
Location: 39.368382 N, 107.038263 W
ZIP Codes (1990): 81621
Note: some ZIP codes may be omitted esp. for suburbs.
Headwords:
Basalt, CO
Basalt


Basalt, ID -- U.S. city in Idaho
Population (2000): 419
Housing Units (2000): 133
Land area (2000): 0.287416 sq. miles (0.744405 sq. km)
Water area (2000): 0.000000 sq. miles (0.000000 sq. km)
Total area (2000): 0.287416 sq. miles (0.744405 sq. km)
FIPS code: 05230
Located within: Idaho (ID), FIPS 16
Location: 43.314270 N, 112.163571 W
ZIP Codes (1990):
Note: some ZIP codes may be omitted esp. for suburbs.
Headwords:
Basalt, ID
Basalt


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  • Basalt - Wikipedia
    Basalt (UK: ˈbæsɒlt, - ɔːlt, - əlt ; [1][2] US: bəˈsɔːlt, ˈbeɪsɔːlt ) [3] is an aphanitic (fine-grained) extrusive igneous rock formed from the rapid cooling of low- viscosity lava rich in magnesium and iron (mafic lava) exposed at or very near the surface of a rocky planet or moon More than 90% of all volcanic rock on Earth is basalt
  • Basalt: Igneous Rock - Pictures, Definition, Uses More
    Basalt is a dark-colored, fine-grained, igneous rock composed mainly of plagioclase and pyroxene minerals It most commonly forms as an extrusive rock, such as a lava flow, but can also form in small intrusive bodies, such as an igneous dike or a thin sill
  • Basalt | Properties, Formation, Composition, Uses - Geology Science
    Basalt is one of the most common rock types on Earth, and it can be found in various locations around the world, both on land and under the ocean floor Basalt is known for its dark color, typically ranging from black to dark gray, and its fine-grained texture
  • Basalt: Properties, Formation, Uses, and Famous Locations | Complete Guide
    Explore the strength and versatility of basalt, a volcanic rock with widespread uses in construction, industrial applications, and art Learn about its formation, types, famous locations, and how to care for basalt in this detailed guide
  • A Guide to Basalt: A Common, Fine-grained, Dark-Colored Volcanic Rock
    What is basalt, and what does it look like? Basalt rock is fine-grained, dark-colored volcanic rock with essentially Mg-rich plagioclase and augite It is basic or low in silica (42-52 wt %) mafic (Mg- and Fe-rich) rock, with relatively low amounts of total alkalis (Na 2 O and K 2 O)
  • Basalt: Composition, Properties, Types, Uses - Geology In
    Basalt is defined as a fine-grained, dark-colored igneous rock composed mainly of plagioclase and pyroxene minerals, with or without olivine It is formed from the rapid cooling of basaltic lava exposed at or very near the surface of the Earth (extrusive or volcanic rock)
  • Basalt | Properties, Formation, Composition, Uses - Geology Hub
    Basalt is a dark-colored, dense rock composed primarily of plagioclase feldspar and pyroxene It is the most common rock type found in oceanic crust and is an important component of the Earth’s continental crust
  • What Is Basalt? - ThoughtCo
    Basalt is the dark, heavy volcanic rock that makes up most of the world's oceanic crust Some of it erupts on land, too, but to a first approximation, basalt is an oceanic rock Compared to the familiar granite of the continents, basalt ("ba-SALT") is darker, denser and finer grained
  • Basalt Properties, Composition and Formation | Earth Know
    Basalt is a massive, dense, fine-grained, dark-colored volcanic rock with mainly calcic plagioclase, augite, and other minor minerals
  • Basalt - Igneous rocks - Sandatlas
    Basalt is a very common dark-colored volcanic rock composed of calcic plagioclase (usually labradorite), clinopyroxene (augite) and iron ore (titaniferous magnetite) Basalt may also contain olivine, quartz, hornblende, nepheline, orthopyroxene, etc Basalt is a volcanic equivalent of gabbro Basalt is a fine-grained and dark-colored rock





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