diabase

Also known as dolerite

thumb|Diabase

Wikidata facts

Image: Polished Diabase.jpg

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Commons category: Diabase

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Article

8 sections

Contents

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).