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lava    音标拼音: [l'ɑvə]
n. 熔岩,火山岩

熔岩,火山岩

lava
n 1: rock that in its molten form (as magma) issues from
volcanos; lava is what magma is called when it reaches the
surface

Lava \La"va\ (l[aum]"v[.a]; 277), n. [It. lava lava, orig. in
Naples, a torrent of rain overflowing the streets, fr. It. &
L. lavare to wash. See {Lave}.]
The melted rock ejected by a volcano from its top or fissured
sides. It flows out in streams sometimes miles in length. It
also issues from fissures in the earth's surface, and forms
beds covering many square miles, as in the Northwestern
United States.
[1913 Webster]

Note: Lavas are classed, according to their structure, as
scoriaceous or cellular, glassy, stony, etc., and
according to the material of which they consist, as
doleritic, trachytic, etc.
[1913 Webster]

{Lava millstone}, a hard and coarse basaltic millstone from
the neighborhood of the Rhine.

{Lava ware}, a kind of cheap pottery made of iron slag cast
into tiles, urns, table tops, etc., resembling lava in
appearance.
[1913 Webster]

60 Moby Thesaurus words for "lava":
aa, abyssal rock, ash, ashes, basalt, bedrock, block lava, brand,
brash, breccia, calx, carbon, charcoal, cinder, clinker, coal,
coke, conglomerate, coom, crag, dross, druid stone,
festooned pahoehoe, fume, gneiss, granite, igneous rock, limestone,
living rock, magma, mantlerock, metamorphic rock, monolith,
pahoehoe, pillow lava, porphyry, pudding stone, reek, regolith,
rock, ropy lava, rubble, rubblestone, sandstone, sarsen, schist,
scoria, scree, sedimentary rock, shelly pahoehoe, slag, smoke,
smudge, smut, soot, stone, sullage, talus, tufa, tuff


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  • Lava - Wikipedia
    A lava flow is an outpouring of lava during an effusive eruption (An explosive eruption, by contrast, produces a mixture of volcanic ash and other fragments called tephra, not lava flows )
  • Lava | Types, Composition, Temperature, Facts | Britannica
    Lava, magma (molten rock) emerging as a liquid onto Earth’s surface The term ‘lava’ is also used for the solidified rock formed by the cooling of a molten lava flow
  • Lava - Visit Indy
    The modern and sleek ambiance of LAVA is unique to the strip of bars found within the Broad Ripple neighborhood In addition to its Greek-style food menu, LAVA presents itself as a Hookah Lounge with over 30 hookah flavors to choose from
  • Lava Flows - U. S. National Park Service
    And even ancient lava flows such as in Isle Royale and Shenandoah national parks still retain some volcanic features Lava flow: An outpouring of molten rock from a vent onto Earth's surface during an effusive volcanic eruption; also, the resulting solidified body of rock
  • What is Lava? | Volcano Glossary | Perlan
    Learn about lava, the molten rock that erupts from volcanoes and its types, formation process, and the transformative impact it has on Earth's surface and ecosystems
  • What Is Lava Made Of? | Ask An Expert
    What Is Lava Made Of? Looking down at a cooled lava flow, you see a black, glassy, vesicular (“spongy”) rock The black color comes from the magnesium and iron-rich minerals, which are present in almost all types of lava flows The glassy appearance means the lava cooled quickly
  • LAVA Definition Meaning - Merriam-Webster
    The meaning of LAVA is molten rock that issues from a volcano or from a fissure in the surface of a planet (such as earth) or moon; also : such rock that has cooled and hardened
  • Lava flows destroy everything in their path - USGS. gov
    Everything in the path of an advancing lava flow will be knocked over, surrounded, buried, or ignited by the extremely hot temperature of lava When lava erupts beneath a glacier or flows over snow and ice, meltwater from the ice and snow can result in far-reaching lahars
  • Lava - New World Encyclopedia
    Fountain of lava, 10 meters high Lava is molten rock expelled by a volcano during an eruption (When the molten rock is beneath the Earth 's surface, it is called magma ) When first exuded from a volcanic vent, the hot lava is at temperatures ranging from 700 °C to 1,200 °C (1,300 °F to 2,200 °F)
  • Lava Flows - Woods Hole Oceanographic Institution
    When a volcano erupts, the molten rock that comes out of the Earth is called lava Lava is so hot, it remains molten and flows until it cools and hardens into rock





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