Concept information
Preferred term
basalt
Type
-
http://www.irandoc.ac.ir/onto/irandoc-meta/Concept
Broader concept
Narrower concepts
Entry terms
Definitions
- Basalt is the most common extrusive volcanic rock. It is usually grey to black and fine-grained due to rapid cooling of lava at the surface of a planet. It may be porphyritic containing larger crystals in a fine matrix, or vesicular, or frothy scoria. Unweathered basalt is black or grey. On Earth, most basalt magmas have formed by decompression melting of the mantle. [Wikipedia]
Obsolete
- false
In other languages
-
-
Persian
-
سنگ بازالتی
URI
http://www.irandoc.acir/onto/irandoc/SWEETT06504
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