~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.