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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 may be erupted at a volcano or through a fracture in the crust, on land or underwater, usually at temperatures from 800 to 1,200 °C (1,470 to 2,190 °F) The volcanic rock resulting from subsequent cooling is often also called lava A lava flow is an outpouring of lava during an effusive eruption
  • 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 fountains over 1,000 feet high shoot from Hawaiis Kilauea volcano
    This is the 26th lava fountaining episode recorded at Kilauea since December Kilauea is one of the world's most active volcanoes
  • Lava Beds National Monument (U. S. National Park Service)
    Lava Beds National Monument is a land of turmoil, both geological and historical Over the last half-million years, volcanic eruptions on the Medicine Lake shield volcano have created a rugged landscape dotted with diverse volcanic features
  • What Is the Difference Between Magma and Lava? Magma vs Lava
    Magma and lava are intrinsically connected, representing different stages of molten rock’s journey from beneath the Earth’s surface to the world above Understanding their differences and similarities helps volcanologists and geologists unravel the complexities of Earth’s dynamic processes
  • Eruption at Hawaiis Kilauea volcano sends lava shooting 1,000 feet in . . .
    Hawaii's Kilauea volcano is erupting again in spectacular fashion, sending lava shooting 1,000 feet into the sky, according to the United States Geological Survey
  • 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
  • Lava Beds National Monument Guide: Caves, Buttes Lava Fields
    Lava Beds National Monument is the best park in California that you have never been to It is so far up in the northeast part of California that it took me five years to finally get there, but I am glad I did The monument has over 46,000 acres, and on that property, it features more than 700 caves
  • 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
  • Rough and Smooth Lava - Ask An Earth and Space Scientist
    The surface of lava can appear smooth, rough, jagged, and sometimes like a pile of construction rubble What are the stories behind these surface features and how did they form?





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