Obsidian rocks, Landmannalaugar, Iceland
Obsidian is a naturally occurring volcanic glass formed as an extrusive igneous rock. It is produced when felsic lava extruded from a volcano cools without crystal growth. Higher resolution images available from rth@arctic-images.com (there is a licensing fee depending on the use).
Reuse
Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported (CC BY-NC-SA 3.0) (opens in a new window)Credit: Ragnar Sigurdsson (arctic-images.com) (distributed via imaggeo.egu.eu)
Properties
Type
Image
Format
JPG
Size
784.7 KB
Aspect
400:391
Width
1200 px
Height
1173 px
Coordinates
63.9830, -19.0670
Tint
Strong purplish blue
Submitted
10 January 2010
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