Dolerite is an igneous rock, that is, a rock initially molten and injected as a fluid into older sedimentary rocks. The magma, of quartz tholeiite composition, was emplaced as a liquid which rose upwards through the basement rocks into older sedimentary rocks of the parmeener supergroup.
What Type of Rock Is Dolerite?
Dolerite is an igneous rock that is formed when magma cools quickly. It is a dark–colored rock that is made up of small crystals. Dolerite is a very hard rock and is used in many construction projects. It is also used to make asphalt.