Great masses of granite, syenite and diorite were intruded at this period, and send tongues even into the andesitic tuffs.
All the volcanic rocks of these islands are submarine stratified tuffs which are penetrated here and there by andesite or diabase dikes.
'Invous X ptar6s, Oeou `Tuffs, 16 y TIJp, Jesus Christ, Son of God, Saviour, which together spell the Greek word for "fish," ix9vs.
A superficial layer of recent volcanic tuffs occurs in several parts of the island.
These are overlaid by conglomerates, tuffs, sandstones and arkoses, which perhaps do not all belong to the same period.