Origin of dolerite
Examples from the Web for dolerite
As the rocks lie in a horizontal position, on most of the islands of the group only the basalts or dolerite are visible.
Still later, dolerite sills and sheets and dikes of granophyre and quartz felsite followed in the same region.
Dolerite was brought from Arabia, cedar from Syria, gold and precious stones from the east.
These are caused either by old intrusions of diabase and gabbro which have undergone modifications, or by later ones of dolerite.
The dolerite of Fair Head sends off sheets along the bedding-planes of these carboniferous strata.