Diabase, also called dolerite or microgabbro, is a mafic, holocrystalline, subvolcanic rock chemically equivalent to volcanic basalt or plutonic gabbro. It typically forms in shallow intrusive bodies such as dikes and sills rather than in deep crustal environments. This description is adapted from Wikipedia contributors under CC BY-SA 4.0; changes were made. https://creativecommons.org/licenses/by-sa/4.0/
Facts
Classification
Classification UseBuilding and Construction 2 Wikipedia 'Diabase' states this use (or use-bearing statement); earth5 pass. UseSculpture and Ornamental 2 Wikipedia 'Diabase' states this use (or use-bearing statement); earth5 pass. Formation ClassIgneous, hypabyssal (a mafic subvolcanic rock chemically equivalent to basalt and gabbro) 1 Connections
Associated With
Chemically equivalent to fine-grained extrusive basalt; diabase is the subvolcanic (intermediate-depth) equivalent.
Source Diabase (Wikipedia)
Chemically equivalent to coarse-grained plutonic gabbro; diabase is the subvolcanic (intermediate-depth) equivalent.
Source Diabase (Wikipedia)
Source Matsu Islands (Wikipedia)
Source Pedra da Gávea (Wikipedia)
Classified As
In Discipline
Sources
1. Diabase (Wikipedia)
Wikimedia FoundationLead section
Diabase (), also called dolerite () or microgabbro, is a mafic, holocrystalline, subvolcanic rock chemically equivalent to volcanic basalt or plutonic gabbro.
Lead section and article body
shallow intrusive bodies such as dikes and sills.
Lead section
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).
View the Source 2. Wikidata: Diabase
Wikidata Q753016
Matsu Islands (Wikipedia)
Associated With: Matsu Islands, Article text, rock DiabaseQuote, Associated With: Matsu Islands, Article text, rock Diabase
The islands are predominantly composed of Jurassic and Cretaceous intrusive (emplaced ≈160 Ma, ≈130 Ma and ≈94 Ma) granite and diabase.
Pedra da Gávea (Wikipedia)
Associated With: Pedra da Gavea, Article text, rock DiabaseQuote, Associated With: Pedra da Gavea, Article text, rock Diabase
The mountain, much like other stone outcroppings in and around the area, is the result of younger Neoproterozoic granitoid rocks and thin Cretaceous diabase dikes intruding the older Meso-Neoproterozoic high-grade metasedimentary rocks.
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