What is the difference between Dolerite and Diorite?

The difference between dolerite and diorite

is that "dolerite" is a fine-grained basaltic rock and "diorite" is a grey intrusive igneous rock composed mostly of plagioclase feldspar, biotite, hornblende and/or pyroxene.

dolerite

diorite

Noun

  • (geology) A fine-grained basaltic rock

Synonyms

  • diabase

Noun

  • (petrology) A grey intrusive igneous rock composed mostly of plagioclase feldspar, biotite, hornblende and/or pyroxene.