dolerite

Noun

Meaning

A dark-colored, basic, igneous rock, composed essentially of pyroxene and a triclinic feldspar with magnetic iron. By many authors it is considered equivalent to a coarse-grained basalt.

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Examples

Much of the island is composed of Jurassic dolerite intrusions (upwellings of magma ) through other rock types, sometimes forming large columnar joints. Source: Internet

Dolerite is basaltic magma that solidifies rapidly in sills and dikes near the surface. Source: Internet

In the southern midlands as far south as Hobart, the dolerite is underlaid by sandstone and similar sedimentary stones. Source: Internet

Tasmania has the world's largest areas of dolerite, with many distinctive mountains and cliffs formed from this rock type. Source: Internet

The following day, he was irritated to learn was launching a surprise inspection of Dolerite on its second day open, assuming they'd be looking for problems. Source: Internet

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