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Gas emissions
· Lava
· Pyroclastic flow
· Ash
· Volcanic bombs…read more

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· Ethnic groups GDP (PPP) 2011 estimate
58% Mestizo Total $460.406 billion
20% White Per capita $9,998
14% Mulatto Infant mortality rate: total: 16.39
deaths/1,000 live births
4% Afro Colombian male: 19.92 deaths/1,000 live births
3% Zambo female: 12.65 deaths/1,000 live births
(2011 est.)
1% Amerindian
February 2012 estimate 46,366,364…read more

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Nevada del Ruiz was
dormant for 140 years.
People forgot about the
destruction and
devastation and Armero
was built on the same site,
growing to a town of 30,000
by 1980…read more

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The November 13,1985 eruption took place during
night, it had been dormant for 150 years. It took the
lahar only two and a half hours to reach the village.
A warning did not reach the people in time.
The hot ash and gases moved across the snow
pack in avalanches of hot volcanic debris
pyroclastic flows and fast-moving, hot, turbulent
clouds of gas and ash pyroclastic surges. The hot
pyroclastic flows and surges caused rapid melting
of the snow and ice. This released a lot of water
and debris that swept down canyons from the
summit. The mud flows gained volume and density
until they were as much as 40 m thick, travelling at
speeds of up to 30 mph.…read more

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