Acta naturalia Islandica - 01.07.1964, Side 40

PLATE VI.
Pl. VI a. Detail of an oiivine phenocryst sitting in subophitic groundmass but containing
granular mass in an embayment. Plane polarized light x 15.
PI. VI b. A non-porphyritic „fish“ in porphyritic host. All the fish are orientated
parallel to each other and with their blunt end pointing the same way. Hammer is
40 cm.