Wikidata facts
- Subclass of
- subvolcanic rock
- Image
- Polished Diabase.jpg
- Said to be same as
- dolerite
Show 2 more facts
- described by source
- Encyclopædia Britannica 11th edition
- Commons category
- Diabase
Sources (3)
via Wikidata · CC0
~7 min read
Encyclopedic overview
8 sectionsContents
- Etymology
- Petrography
- Locations
- Gondwanaland and Australia
- Use
- See also
- References
- External links
thumb|Diabase
Diabase (), also called dolerite () or microgabbro, is a mafic, holocrystalline, subvolcanic rock chemically equivalent to volcanic basalt or plutonic gabbro. Diabase dikes and sills are typically shallow intrusive bodies and often exhibit fine-grained to aphanitic chilled margins which may contain tachylite (dark mafic glass).
Excerpted from Wikipedia’s “diabase” article, available under the CC BY-SA 4.0 licence.