Lava Sheet

The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Lava Sheet

 

mode of occurrence of lava when it pours out in very large quantities and spreads in all directions during a volcanic eruption. It forms lava plateaus on which younger volcanoes may occur. The amount of lava issued during formation of a lava sheet may be as much as many cubic kilometers. It is thought that such outpourings occur from large fissures or from large openings formed when the roofs of magma chambers founder.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
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