Young and wrinkled
Iceland is dominated by igneous rocks, making up 90% of the rock volume, while only around 10% are sedimentary, with no true metamorphic rock. Most of the igneous deposits are volcanic, originating from magma spewing out onto the surface. A few formations, such as Vestrahorn shown here, are formed from plutonic rock, magma which solidified below the surface. Vestrahorn is also notable for the very long scree slopes which give it some interesting vertical layering. The beaches of Iceland are almost entirely compsed of black sand, with a few exceptions in the northwest. Here the sand is stabilized somewhat by patches of grass that keep the sand from being entirely blown away, forming little hills. (#1)
Thank you for your comments and favs- much appreciated.
Young and wrinkled
Iceland is dominated by igneous rocks, making up 90% of the rock volume, while only around 10% are sedimentary, with no true metamorphic rock. Most of the igneous deposits are volcanic, originating from magma spewing out onto the surface. A few formations, such as Vestrahorn shown here, are formed from plutonic rock, magma which solidified below the surface. Vestrahorn is also notable for the very long scree slopes which give it some interesting vertical layering. The beaches of Iceland are almost entirely compsed of black sand, with a few exceptions in the northwest. Here the sand is stabilized somewhat by patches of grass that keep the sand from being entirely blown away, forming little hills. (#1)
Thank you for your comments and favs- much appreciated.