Difference between revisions of "Hornito"
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(Undo revision 325711 by Special:Contributions/Vstream (User talk:Vstream)vandalsim) |
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| − | [[Image:Hornito.jpg|thumb|300px|Hornito forming on east rift zone of Kilauea during the Pu`u `O`o-Kupaianaha eruption.]]A ''' | + | [[Image:Hornito.jpg|thumb|300px|Hornito forming on east rift zone of Kilauea during the Pu`u `O`o-Kupaianaha eruption.]]A '''hornito''' is a small rootless [[spatter cone]] that forms on the surface of a basaltic lava flow (usually [[pahoehoe]]). A hornito develops when lava is forced up through an opening in the cooled surface of a flow and then accumulates around the opening. Typically, hornitos are steep sided and form conspicuous pinnacles or stacks. They are "rootless" because they are fed by [[lava]] from the underlying flow instead of from a deeper magma conduit. |
==Sources== | ==Sources== | ||
Revision as of 23:08, January 4, 2010
A hornito is a small rootless spatter cone that forms on the surface of a basaltic lava flow (usually pahoehoe). A hornito develops when lava is forced up through an opening in the cooled surface of a flow and then accumulates around the opening. Typically, hornitos are steep sided and form conspicuous pinnacles or stacks. They are "rootless" because they are fed by lava from the underlying flow instead of from a deeper magma conduit.