Lava Stratigraphy on Isle Royale
 

N K Huber, 1973, p C14

psp


pei


pmp


pli



pth

pwi

pp


pg


pgi





pp

pm





ph


php


pp

pai

Ophite
Ophite
Sandstone
Sandstone

Conglomerate

Amygdaloid

Amygdaloid

Amygdaloid

Amygdaloid

Beach cobbles