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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
    The solid volcanic rock resulting from subsequent cooling of the molten material is often also called lava 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 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
  • Lava Hot Springs Recreation, Events, Lodging Businesses - Chamber of . . .
    Find recreation, events, lodging, dining, real estate and businesses in Lava Hot Springs Idaho Swim, soak, tube the river and more!
  • 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
  • What is lava made of? | Volcano World | Oregon State University
    Lava is made up of crystals, volcanic glass, and bubbles (volcanic gases) As magma gets closer to the surface and cools, it begins to crystallize minerals like olivine and form bubbles of volcanic gases
  • 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
  • Lava - New World Encyclopedia
    The hardened formation is called " lava flow," whereas the material that still contains molten rock is called an " active lava flow " The rock formed from solidified lava (or magma) is called igneous rock
  • 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
  • Magma - National Geographic Society
    Magma is extremely hot liquid and semi-liquid rock located under Earth’s surface When magma flows onto Earth’s surface, it is called lava





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