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 dikes and sills are typically shallow intrusive bodies and often exhibit fine-grained to aphanitic chilled margins which may ...

2023年8月26日 · 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 …

粗玄岩（dolerite）又称“徨绿岩”。颗粒较粗的玄武岩。全晶质。中粒。多具粗玄结构。如矿物成分肉眼不能鉴别，则称为细粒玄武岩。多呈岩床、岩脉产出。化学成分同玄武岩，与玄武岩区别在予它不含玻璃质，而结晶粒度较粗。与显微辉长岩为属义语。

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 …

DOLERITE翻译：辉绿岩，粗粒玄武岩。 了解更多。

2025年2月19日 · 辉绿岩 （英语： Diabase）又称粗粒 玄武岩 或 细粒辉长岩 (microgabbro) [1]，是一种基性半深成 火成岩，化学成分和矿物组成与 辉长岩 一致。 岩理较辉长岩细，含有较多铁镁矿物，颜色较深。 辉绿岩是典型的浅侵入体，通常表现出细粒至 隐晶岩 的寒化边缘，可能含有 玄武玻璃 （深色黑云母玻璃）。 辉绿岩（Diabase）是北美洲的首选名称，而dolerite则是英语世界其他地区的首选名称，在英语世界中，diabase 这个名称有时是指改变的闪长岩和玄武岩 …

Dolerite is the name given to the medium-grained intrusive basic igneous rock commonly found in dykes and sills; in North America and continental Europe it is often referred to as diabase, but many authors restrict this term to altered dolerite.

Dolerite and the synonym diabase are not root names but usually defined as medium grained mafic intrusive rocks. It can include microgabbro, basalt, ...

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.

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 - …