DYNAMIC GEOLOGY
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with lava; from comparison with volcanoes of like nature in different parts of the world it is probable that they
Fig. 19. — The Non-explosive Type of Volcano. The cauldron lake of lava (caldera) of Kilauea in the Hawaiian Islands
are occasioned by a plug of the earth's crust sinking, and round the edge lava comes welling up. The cauldron subsidence of Glencoe, in Scotland, is of this type.