dolerite
C29586
concept
Dolerite is a medium-grained, dark-colored igneous rock with a composition similar to basalt, typically formed as shallow intrusions within the Earth's crust.
Observed surface forms (3)
- basaltic rock ×1
- dolerite sill ×1
- mafic intrusive rock ×1
Instances (4)
- Preseli bluestone
- Catoctin greenstone via concept surface "basaltic rock"
- Whin Sill dolerite via concept surface "dolerite sill"
- Ferrar Dolerite