posted on Jun, 14 2011 @ 07:37 AM
Extinct volcanoes are those that scientists consider unlikely to erupt again, because the volcano no longer has a lava supply. Examples of extinct
volcanoes are many volcanoes on the Hawaiian – Emperor seamount chain in the Pacific Ocean, Hohentwiel, Shiprock and the Zuidwal volcano in the
Netherlands. Edinburgh Castle in Scotland is famously located atop an extinct volcano. Otherwise, whether a volcano is truly extinct is often
difficult to determine. Since "supervolcano" calderas can have eruptive lifespans sometimes measured in millions of years, a caldera that has not
produced an eruption in tens of thousands of years is likely to be considered dormant instead of extinct.
That volcanos magma chambers are plugged full of solid rock like granite,its impossible according to volcano experts for an extinct volcano to breach
Ilvar Khorstoon on June 13, 2011, 1:41 PM
@Lava Flow – Yes there are two bad volcanoes right next to Christchurch. However they are very old Miocene volcanoes. Partially yes there could be a
connection between them and these swarms, but it is quite improbable they are waking up. More probable these volcanic buildings are just “setting
For such old volcanoes to come up again, magma needs to break up through the remains of the magma chambers. And you know what is an old, frozen to
death magma chamber? A huge near-monolithic chunk of hard granite.
Rob James on June 14, 2011, 8:22 AM
It has to be nuclear or a massive industrial accident. I can’t for the life of me see that VAAC would oversee this SO2 event across a major
air-route into the middle East not only for domestic air travel but military also. This ‘plume’ matches the one coming from Eritrea if volcanic,
and satellite/ground data would have already confirmed it to be volcanic in nature.