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This is an archive of CompuServe forum messages from 1985 to 1995, as saved in transcripts by John Foust.

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Pahoehoe vs aa Message #127721

From: James W. Keefer The Science/Math Forum · Geology April 10, 1994 8:17 AM

I'm looking for a good distinction between pahoehoe and aa lava as found on Hawaii. Is there any chemical difference? Or is it merely the texture caused by the rate of cooling? TIA. Jim