boreholes confirmed dykes in excess of 50% of the structure at the depth
of 3 km. In eastern Iceland there are ruins of at least 14 central
volcanoes, some of which are very obvious on the surface.
The Ice Age glaciers carved 1-3
km off the surface and brought magma reservoirs, magma chambers and
intrusions to the surface and left them there when they retreated.
The earth’s crust is flexible and started rising when the great
weight of the ice gradually disappeared.
The fact that the great icecap Vatnajokull is growing smaller
might explain the increased shallows of River Hornafjardarfljot
Some of the geologically
interesting spots in East Iceland:
The Coves Area,
Breiddalur, Lonsoraefi, Snaefell Area,