A view over the Mid-Atlantic Rift
A second example of a small archway in the contorted lava fields of Dimmuborgir, near Lake Mývatn, Iceland.
Here is another example:
A pair of volcanic archways formed at Dimmuborgir, near Lake Mývatn, Iceland.
Another example can be seen here:
Iceland, if you can believe the composition!
An unusual rock to see in Iceland!
Made famous in 2010, when its eruption put out sufficient ash to shut down European airspace for a week, this is the glacier-capped volcano Eyjafjallajokull.
More details to be added... Columnar basalt in 'da house.
with pebbles and cross-beds.
Flip side of the sample here: www.gigapan.com/gigapans/188209
Table Mountain Sandstone from Table Mountain. A quartz arenite with variable levels of hematite staining.
Slaty cleavage is variably developed in strata of the rhythmite portion of the Neoproterozoic Konnarock Formation.
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