Microgabbro
noun ·Rare ·Advanced level
Definitions
- 1 A fine-grained igneous rock with the same composition as gabbro but having an ophitic texture; diabase. countable, uncountable
"Among these sequences, the Early Cretaceous parts (Urutawan–Motuan) contain spilites and keratophyres within greywacke-type detritus and conglomerates (Battey 1950; Ash 1970; Hay 1975), whilst the Late Cretaceous lithologies are predominantly basalts, dolerites, and microgabbros, with minor amounts of sediment (Le Couteur 1967; Hay 1975)."
Example
More examples"Among these sequences, the Early Cretaceous parts (Urutawan–Motuan) contain spilites and keratophyres within greywacke-type detritus and conglomerates (Battey 1950; Ash 1970; Hay 1975), whilst the Late Cretaceous lithologies are predominantly basalts, dolerites, and microgabbros, with minor amounts of sediment (Le Couteur 1967; Hay 1975)."
Etymology
From micro- + gabbro.
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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.