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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 Rapid-cooling, fine-grained basalt
  • Basalt – Formation, Properties, Characteristics
    Learn how basalt forms from mantle magma, its mineral composition, types, and global significance in Earth’s crust and volcanic provinces
  • 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 | Definition, Properties, Facts | Britannica
    Basalt, extrusive igneous (volcanic) rock that is low in silica content, dark in color, and comparatively rich in iron and magnesium Basalts may be broadly classified on a chemical and petrographic basis into two main groups: the tholeiitic and the alkali basalts Learn more about basalt in this article
  • Basalt, CO - Official Website | Official Website
    To further encourage Basalt residents and visitors to use alternative transportation, the Town recently expanded the Basalt Connect service area beyond the current boundaries to add service to transit stops at Crown Mountain, Summit Vista, and Emma Read on
  • A Guide to Basalt: A Common, Fine-grained, Dark-Colored Volcanic Rock
    Basalt is a common and widely used, fine-grained, dark-colored mafic volcanic rock It has mainly calcic plagioclase feldspar and augite
  • Basalt: Composition, Properties, Types, Uses – Geology In
    Basalt: Composition, Properties, Types, Uses Basalt constitutes the Earth's most abundant igneous rock type, estimated to comprise approximately 70% of the planet's crust What is Basalt Basalt is defined as a fine-grained, dark-colored igneous rock composed mainly of plagioclase and pyroxene minerals, with or without olivine
  • Things to Do in Basalt, Colorado | Basalt Chamber
    Discover Basalt, CO Downtown Basalt’s history began as a railroad town in pioneering days, during the silver mining boom Here's why we love Basalt
  • Basalt: Identification, Pictures Info for Rockhounds
    Basalt is mafic in composition, meaning it is devoid of quartz and contains a great deal of darker minerals like pyroxene and hornblende While basalt is a clearly defined rock type, it can sometimes be hard to distinguish it from closely related rocks – especially if you don’t have access to sophisticated testing methods
  • BASALT Definition Meaning - Merriam-Webster
    The meaning of BASALT is a dark gray to black dense to fine-grained igneous rock that consists of basic plagioclase, augite, and usually magnetite





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