graywacke
/grey-wak, -wak-uh/US // ˈgreɪˌwæk, -ˌwæk ə //
灰岩,灰岩岩,灰白色,灰白
Definitions
n.名词 noun
- 1
- : Geology. a dark-gray coarse-grained wacke.
Examples
Appropriately pronounced a "secondary graywacke slate," by Mr. Eaton.
In the transition graywacke of the south of Scotland, the galena mines of Leadhills occur.
Their material, however, is not flint, but either graywacke or a kind of tough slate.
Is it primitive, or is it graywacke like Catskill Mountains?
I received a specimen of slaty graywacke from Lake Superior.
Level 4Browse all words →