Guest guest Posted August 17, 2001 Report Share Posted August 17, 2001 Just as a point of information, " lava " is molten rock that either flows out onto the surface or is intruded into the country rock at shallow depths. ( " Magma " is the deeper equivalent.) Once a lava cools it becomes a rock - isn't lava any longer. Rocks formed from lavas include things such as scoria, basalt, rhyolite, obsidian, and andesite. Other types of volcanic rocks - not formed from lavas - include tuffs (formed from ash falls and flows) and volcanic breccias (formed by loose debris being swept up in an ash flow and becoming part of it.) Volcanic breccias should not be confused with sedimentary breccias; they are two different things. Basically, the term " lava " shouldn't be used as the name of a rock. *~~*~~*~~ Linda in Florida ~~*~~*~~* The grass isn't greener on the other side...It's greener where you water it! ;o) ³³´`*:§»«§:*´`³³³´`*:§»«§:*´`³³³³´`*:§»«§:*´`³³³´`*:§»«§:*´`³³ email protected by http://www.grisoft.com Quote Link to comment Share on other sites More sharing options...
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