Scoria crater or pseudocrater
Pseudocraters result when lava flows over shallow lakes, marshes, or rivers. The lava incorporates water from its substrate, which boils and escapes as steam. The result is a small scoria crater. In the background is the Krafla volcano.
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Oberlin College Library
1997
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Online Access: | http://server15963.contentdm.oclc.org/u?/p15963coll1,1622 |