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Nyiragongo, an active African volcano, possesses lava unlike any other in the world, which may point toward its source being a new mantle plume, says a University of Rochester geochemist. The lava composition indicates that a mantle plume—an upwelling of intense heat from near the core of the Earth—may be bubbling to life beneath the soil of the Democratic Republic of the Congo. The findings are presented in the current issue of the journal Chemical Geology.
"This is the most fluid lava anyone has seen in the world," says Asish Basu, professor of earth science at the University of Rochester. "It's unlike anything coming out of any other volcano. We believe we're seeing the beginning of a plume that is buoying up the entire area and contributing to volcanism and earthquakes."
Scientists believe mantle plumes can last hundreds of millions of years, and that their heat can create phenomena such as Yellowstone National Park or the string of Hawaiian Islands. Basu says Nyiragongo's frequent eruptions may be the birthing pains of a similar plume and the possible beginning of new large-scale geological formations in the region.
But it is Nyiragongo, says Basu, that is being fed directly from the plume. Another volcano, Nyamuragira, just 15 miles to the north of Nyiragongo displays much more conventional lava compositions. Basu says this is because Nyamuragira is being fed from the edge of where the plume's head is pooling, mixing in elements of melted crust and upper mantle, whereas Nyiragongo is being fed directly from the plume's main body.
Eruptive History
1977
Drained lava lake, killed over 1,000 people because of fast moving flows
1994
Rwandan refugees fleeing during eruption caused a lot of destruction
2002
Lava flows through downtown Goma, reaches Lake Kivu, only to ~150 km depth
2002 - present
Constant activity, seismic tremors, smaller eruptions
Originally posted by questioningall
Hey, you wanted vid...... so I have found one... will look for more with actual flowing lava.
This one is very interesting, I like the music too. The people are very brave to be at the mouth of the volcano, it does show the lava at the bottom.
Originally posted by UmbraSumus
That piece of music never fails to give me the shivers , one of the few pieces which does not invoke images of "products" for me...... damn those advertising agencies
Originally posted by veterator
This is a great find. But, wouldn't the volcanic in and of itself cause the magnetic? anomaly? Heat affects magnetics, couldn't the massive amounts of bulging magma in the region be causing at least some of this effect?