Translation guide
A type of dark-colored igneous rock, known as 輝緑岩 (きりょくがん) in Japanese. This is a technical geological term.
Referring to the specific igneous rock diabase (also called dolerite).
Standard Japanese term for diabase. Used in geology and petrology.
この地域には輝緑岩の岩脈が多く見られる。
Many diabase dikes can be seen in this area.
Loanword from English 'dolerite', which is synonymous with diabase in many contexts. Used in some academic or international settings.
Diabase is a specialized geological term. In everyday conversation, it is rarely used. If you need to refer to a dark, hard rock in a non-technical context, you might use a more general term like 黒っぽい硬い岩 (くろっぽいかたいいわ).
ドレライトは玄武岩と似た組成を持つ。
Dolerite has a composition similar to basalt.