- GeoRef, Copyright 2004, American Geological Institute. Reference includes data from Bibliography and Index of Geology Exclusive of North America, Geological Society of America, Boulder, CO, United States
The geologic relations of the lavas of Rum, Inner Hebrides, Scotland, are indicated. Two typical textural varieties of these lavas, dolerite and basalt, are described; also the trachybasalt (mugearite) lavas. The origin of the amygdaloidal trachybasalt is discussed.