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Photo glossary of volcano terms

Spatter cones on flank of Pu`u `O`o vent, Kilauea Volcano, Hawai`i

Photograph by C. Heliker on 3 April 1992

Lava pours from the base of spatter cones built atop a fissure on the southwest flank of Pu`u `O`o (note slope in lower left), Kilauea Volcano, Hawai`i.

Spatter cone
Spatter cones are low, steep-sided hills or mounds of welded lava fragments that form along a linear fissure or around a central vent. As lava fragments erupt into the air, they often do not have time to cool completely before hitting the ground. Consequently, the fragments "spatter" as they land and bond to the underlying lava fragments, which are still hot and sometimes oozing down the side of the cone.

Related photo glossary terms:

 

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U.S. Department of the Interior, U.S. Geological Survey, Menlo Park, California, USA
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Last modification: Monday, 04-Sep-2000 22:47:13 EDT (SRB)