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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
    Lava is molten or partially molten rock that has been expelled from the interior of a terrestrial planet (such as Earth) or a moon onto its surface Lava may be erupted at a volcano or through a fracture in the crust, on land or underwater, usually at
  • 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 The temperatures of molten lava range from about 700 to 1,200 °C (1,300 to 2,200 °F)
  • Lava fountains over 1,000 feet high shoot from Hawaiis Kilauea volcano . . .
    The lava flow remains contained in the Halema'uma'u caldera, a crater at the top of the volcano, the observatory said The volcano also released a volcanic cloud about 15,000 feet into the air
  • Eruption at Hawaiis Kilauea volcano sends lava shooting 1,000 feet in . . .
    Lava fountaining in the ongoing Halemaʻumaʻu eruption at Kīlauea, Hawai'i, began at about 1:40 a m on June 20, 2025 USGS Volcanoes The eruption is flowing into a remote area of Hawaii
  • 15 Facts About Lava - Mental Floss
    Previously obscure terms like laze (lava and haze), vog (volcanic and smog fog), and pahoehoe and a'a (types of lava flows) are becoming part of the lexicon But how much do you really know
  • Types of Lava – Pahoehoe and A’a - Science Notes and Projects
    Learn about the types of lava including the forms of lava flow (pahoehoe and a'a) and the chemical composition based on silica content
  • Lava - Encyclopedia. com
    lava Molten rock or magma that reaches the Earth's surface and flows out through a volcanic vent in streams or sheets There are three main types of lava: vesicular, such as pumice; glassy, such as obsidian; and even-grained Chemically, lavas range from acidic to ultrabasic Basic lavas have a low viscosity and flow easily, covering large areas
  • Rough and Smooth Lava | Ask An Earth And Space Scientist
    A classic, smooth lava flow is like ketchup, while a rough lava flow is more like a thick or drying syrup Smooth Lava: Pahoehoe A classic lava flow with a smooth surface and curved ripples and folds is known as pahoehoe
  • What is Lava? | Volcano Glossary | Perlan
    Lava, with its intense heat and unstoppable flow, reminds us of our planet’s dynamic nature and the powerful forces beneath our feet Its ability to destroy, create, and transform is unparalleled, shaping the physical landscape and the biological communities that thrive in its aftermath
  • Exploring All the Different Types of Lava: A Fiery Voyage - Outforia
    There are 4 main types of lava: felsic, andesitic, basaltic, and ultramafic They’re classified by their varying levels of silica Learn more about them here!





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