- 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
On the southern side of the Snaefellsnaes peninsula, two areas of plutonic rocks intrude the basalts. These are the Midhyrna gabbro and the Lysuskard gabbro and granophyre, probably of Tertiary age. Their occurrence and emplacement are described.