Obsidian rocks, Landmannalaugar, Iceland
by Ragnar Sigurdsson (arctic-images.com), 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).
Categories
- Earth Magnetism & Rock Physics (345)
- Field (2774)
- Geochemistry, Mineralogy, Petrology & Volcanology (864)
Location
- Europe (3571)
- Northern Europe (829)
- Iceland (273)
- Exact location (-19.0670 W, 63.9830 N)
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1200 × 1173 px;
image/jpeg; 812.0 KB
Submitted on Jan. 10, 2010
Licence
Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported (CC BY-NC-SA 3.0)
Credit
Ragnar Sigurdsson (arctic-images.com) (distributed via imaggeo.egu.eu)
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