Subject ASC0003ubg
The geologist : a popular monthly magazine of geology.
Vol.1, Page 145 ()
Natural History Museum Library, London
BHL Page 46420143
Keywords
vaux volcano iceland gjas lava deluge surface thingvalla sunk lower level volcanism structure The grid shows the volcanic rocks in iceland. volcanic rocks Iceland cross-section Gjas Lava deluge original surface Thingvalla