The rocks consist chiefly of basalt, dolerite, melaphyre and felstone.
"Volcanoes: Past and Present" by Edward Hull
In China, at the close of the period, there were enormous eruptions of melaphyre, porphyrite and quartz-porphyry.
"Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 3" by Various
The upper part of the Maluti range consists of flows of melaphyres and diabases belonging to the volcanic beds.
"Encyclopaedia Britannica, 11th Edition, Volume 3, Slice 4" by Various