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- Diabase - Wikipedia
Diabase ( ˈ d aɪ ə ˌ b eɪ s ), also called dolerite ( ˈ d ɒ l ə ˌ r aɪ t ) or microgabbro, [1] is a mafic, holocrystalline, subvolcanic rock equivalent to volcanic basalt or plutonic gabbro
- Diabase: A dark-colored, fine-grained intrusive igneous rock - Geology. com
In the United States and Canada, the name "diabase" is used for a dark gray to black, fine-grained, intrusive igneous rock that has a composition similar to basalt and gabbro The difference between basalt, diabase, and gabbro is in their grain size - which was determined by their cooling rates
- Diabase or Dolerite : Properties, Composition, Formation - Geology Science
Diabase, also known as dolerite, is a type of igneous rock that holds significance in the field of geology due to its unique characteristics and formation process It is an intrusive rock, which means it forms from molten magma that cools and solidifies beneath the Earth’s surface
- Diabase | Igneous, Intrusive, Basaltic | Britannica
diabase, fine- to medium-grained, dark gray to black intrusive igneous rock It is extremely hard and tough and is commonly quarried for crushed stone, under the name of trap Although not popular, it makes an excellent monumental stone and is one of the dark-coloured rocks commercially known as black granite
- Diabase FAQ - Golden Gate National Recreation Area (U. S. National Park . . .
Diabase is an intrusive igneous rock with the same mineral composition as basalt It cools under basaltic volcanoes, like those at mid-ocean ridges Diabase cools moderately quickly when magma moves up into fractures and weak zones below a volcano
- Diabase or Dolerite Properties and Composition | Earth Know
Dolerite, diabase, or formally microgabbro, is a dark-colored, medium-grained subvolcanic rock equivalent to basalt or gabbro in composition Subvolcanic or hypabyssal rock is a plutonic rock that forms at shallower depths less than 2 km (1 2 mi) from the Earth’s surface
- Diabase - Igneous Rocks - Sandatlas
Diabase (dolerite) is a dark-colored igneous rock It is compositionally equivalent to gabbro and basalt but texturally between them Diabase is a common rock type It occurs mostly in shallow intrusions (dikes and sills) of basaltic composition
- Diabase - Encyclopedia. com
dolerite (diabase, microgabbro) A dark-coloured, medium-grained igneous rock which contains plagioclase feldspar of labradorite composition and pyroxene of augite or titanaugite composition as essential minerals, and magnetite, titano-magnetite, or ilmenite as accessory minerals
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