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
Dolerite: Mineral information, data and localities. - mindat. org In British and Australian usage: A medium grained mafic intrusive rock whose main components are calcic plagioclase and clinopyroxene and which is characterized by ophitic to subophitic texture; usually found in sills and dykes The preferred term for what is called diabase in the United States
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
What You Shouldn’t Miss on Diabase or Dolerite Rock Diabase, dolerite, or microgabbro is a medium-grained, dark-colored, hypabyssal, or subvolcanic rock with a composition similar to plutonic gabbro or volcanic basalt It commonly occurs in dikes, sills, and sometimes in plugs, sheeted dikes, laccoliths, or lopoliths
What is Dolerite, Properties, and Geological significance Dolerite is an intrusive igneous rock that is composed mainly of plagioclase feldspar and pyroxene It is formed when magma is intruded into other rocks, and then cools and solidifies underground Dolerite typically has a fine-grained texture, and is known for its ability to hold a sharp edge
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 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 or dolerite – Geology is the Way Diabase (or dolerite) is a medium-grained igneous rock with basaltic composition The term is also synonym of microgabbro The name comes from the Greek diabasis , meaning ‘crossing over’, which is appropriate since this rock is texturally halfway between a gabbro and a basalt