Origin of diabase
Examples from the Web for diabase
The diabase forms the Bruxie and Leys Hills and some minor elevations.
While the diabase dikes are most prominent in the Newark rocks, they are also found occasionally in the other terraces.
None the less, its origin as diabase can definitely be asserted of the whole mass.
These are caused either by old intrusions of diabase and gabbro which have undergone modifications, or by later ones of dolerite.
The minerals of diabase are the same as those of dolerite, viz.