Diabase/dolerite
In non-North American usage dolerite is preferred due to the various conflicting uses of diabase. Dolerite (Greek: doleros, meaning "deceptive") was the name given by Haüy in his 1822 Traité de minéralogie. In continental Europe diabase was reserved by Brongniart for pre-Tertiary (pre-Cenozoic) material, with dolerite used for more recent rock. The use of diabase in this sense was abandoned in Britain in favor of dolerite for rocks of all ages by Allport (1874), though some British geologists continued to use diabase to describe slightly altered dolerite, in which pyroxene has been altered to amphibole.
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