basaltic

/buh-sawlt, bas-awlt, bey-sawlt/US // bəˈsɔlt, ˈbæs ɔlt, ˈbeɪ sɔlt //UK // (ˈbæsɔːlt) //

玄武岩,玄武岩型,玄武岩质,玄武质

Definitions

n.名词 noun

1
- : the dark, dense igneous rock of a lava flow or minor intrusion, composed essentially of labradorite and pyroxene and often displaying a columnar structure.

In the valleys which we passed through, there was a large quantity of basaltic rock and most beautifully crystallized quartz.
The first flow reached a thickness here of fully three hundred feet, and exhibits a fine development of basaltic structure.
Contraction parting or jointing is often observed, being especially characteristic of the basaltic types.
The black basaltic lava east of Cowlitz Glacier shows the latter structure in a striking manner.
Several of these falls are split into various channels by small islands or pillars of basaltic rock.