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Re: [OM] OT: Madeira

Subject: Re: [OM] OT: Madeira
From: Chris Barker <ftog@xxxxxxxxxxxxxx>
Date: Thu, 10 Nov 2011 06:25:34 +0000
Moose, I don't know either.  

But I think that there is a caldera further south (the Azores?) whose eventual 
eruption could cause a tidal wave on the USA's east coast, somewhere.

Chris

On 9 Nov 2011, at 23:35, Moose wrote:

> I have no idea if this may be true of the Madeiras. The Hawaiian Islands were 
> all formed as the plate they ride on moved 
> past a hot spot in the earth below. So the volcanoes on the older islands are 
> truly dead, as there in no longer any 
> magma trying to press up below them. As the big island ever so slowly moves 
> on, Mauna Kea and Mauna Loa will become 
> inactive.
> 
> But fear not, the next island is already moving toward the surface as the hot 
> spot spawns a new, as yet submerged, volcano.
> 
> I seem to recall that a similar process created the basin and range lands of 
> Nevada.

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