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stalactite

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n. 钟乳石

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钟乳石

WordNet (r) 3.0 (2006) (WordNet)

stalactite
n 1: a cylinder of calcium carbonate hanging from the roof of a
limestone cave

The Collaborative International Dictionary of English v.0.48 (gcide)

Stalactite \Sta*lac"tite\ (-t[imac]t), n.; pl. {Stalactites}
(-t[imac]ts). [Gr. stalakto`s oozing out in drops, dropping,
fr. stala`zein to drop: cf. F. stalactite.] (Geol.)
(a) A pendent cone or cylinder of calcium carbonate
resembling an icicle in form and mode of attachment.
Stalactites are found depending from the roof or sides of
caverns, and are produced by deposition from waters which
have percolated through, and partially dissolved, the
overlying limestone rocks.
(b) In an extended sense, any mineral or rock of similar form
and origin; as, a stalactite of lava.
[1913 Webster]

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Stalactite - Wikipedia
Stalactites may be composed of lava, minerals, mud, peat, pitch, sand, sinter, and amberat (crystallized urine of pack rats) [2][3] A stalactite is not necessarily a speleothem, though speleothems are the most common form of stalactite because of the abundance of limestone caves [2][4]
Stalactite and stalagmite | Cave formations, Limestone caves . . .
stalactite and stalagmite, elongated forms of various minerals deposited from solution by slowly dripping water A stalactite hangs like an icicle from the ceiling or sides of a cavern A stalagmite appears like an inverted stalactite, rising from the floor of a cavern
Stalactites, Stalagmites, and Cave Formations
Because water does not drip off of the helictite, as would happen with a stalactite, the water coats its surface creating strange, branch-like shapes Helictites can be seen along the Great Onyx Lantern Tour
Stalagmites and Stalactites – How They Form and More
A stalagmite only forms beneath a stalactite if the water dripping from the stalactite consistently lands on the same spot on the cave floor Environmental conditions such as air currents and floor slope affect this process
Stalactite And Stalagmite | Encyclopedia. com
stalactite Elongated body of dripstone descending from the roof of a cave in a karst environment It is produced by calcite precipitation as excess carbon dioxide diffuses from water droplets entering a cave environment
How are stalactites and stalagmites formed? - Live Science
Slight changes in the air currents through a cave, or in the orientation of the crystals in a growing stalactite, can draw tiny water droplets off in new directions
Stalactites and Stalagmites: How to Tell the Difference
The main difference is that a stalactite, hangs from the ceiling, while the stalagmite grows from the ground Both are surreal when seen in person, especially when you understand the history behind them
STALACTITE Definition Meaning - Merriam-Webster
The meaning of STALACTITE is a deposit of calcium carbonate (such as calcite) resembling an icicle hanging from the roof or sides of a cave
Stalactite - ScienceDaily
A stalactite or dripstone, is a type of speleothem that hangs from the ceiling or wall of limestone caves
Stalactite - an overview | ScienceDirect Topics
Stalagmites grow from the cave floor upward and are commonly fed by water dripping from an overhead stalactite The most common variety of stalactites is the tubular soda straw, which is characterized by a central hollow tube and a translucent wall structure

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