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diabase
[ dahy-uh-beys ]
noun
- a fine-grained gabbro occurring as minor intrusions.
- British. a dark igneous rock consisting essentially of augite and feldspar; an altered dolerite.
diabase
/ ˈ岹ɪəˌɪ /
noun
- an altered dolerite
- another name for dolerite
diabase
/ ī′ə-′ /
- A dark-gray to black, medium-grained igneous rock consisting mainly of labradorite and pyroxene. Diabase is compositionally similar to andesite, but has coarser grains. It is commonly found in sills and dikes.
- Also called dolerite
Derived Forms
- ˌ徱ˈ, adjective
Other 51Թ Forms
- 徱a·s adjective
51Թ History and Origins
51Թ History and Origins
Origin of diabase1
Example Sentences
They found that in some areas of Preseli, a gray or black intrusive igneous rock known as diabase or dolerite, one of the types found at Stonehenge, produced a sound like a metallic bell when struck.
Like Stonehenge, the Pennsylvania site is filled with diabase rocks, which are abundant in iron and magnesium and spent about 170 million years below ground before rising to the surface and cooling.
In July 2013, the researchers received permission to test the handful of diabase rocks there for similar attributes.
At St Andreasberg in the Harz it occurs both in diabase and in the veins of silver ore.
The great igneous masses of Tro�dos, &c., consisting of diabase, basalt and serpentine, are of later date.
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