By: Julie Thomas-Zucker
The world has many examples of historic pyroclastic flows. The oldest known flow is Mt. Vesuvius, Pompeii in Italy. Donna O'Meara in Volcano shows examples of each of these many volcanoes that have erupted over time. Four recent flows occurred in Montserrat in the Caribbean...
By: Michael Totten
In the United States, it is easy to forget that earthquakes can cause much more damage than hurricanes. Thanks to modern engineering, most structures in American earthquake-prone regions resist light and moderate earthquake damage easily. Although dozens of earthquakes rattle these regions every month, they...
Examples of historic pyroclastic flows
By: Blaise Pascal
Other than causing tsunamis, creating lava flows, and pouring ash and gases into the air, volcanoes can be deadly in another way. Pyroclastic flows sometimes result from an eruption and can cause massive damage and loss of life. These flows can move at incredible speeds...
By: Ryan Lewis
Natural disasters fascinate mankind. They are a stark reminder that despite all man’s achievements as a species on Planet Earth man can so easily be humbled by nature and its awesome power. In the last few years the frequency of these devastating events has...
By: Keith Redfern
A volcanic intrusion occurs when molten material intrudes between or through beds of rock in the Earth’s crust.Volcanic activity occurs along the lines between tectonic plates. Tectonic plates are separate areas of the Earth’s crustal rocks which move over time. There are...
The importance of plant life in the ocean
By: Clare Hughes
Ocean plant life is arguably the most important organism on the planet. For a start it is the bottom of the food chain for most animals that live in the ocean and provides them with a home. Added to that, ocean plant life produces more...
By: Jennifer Boyd
There are several different types of volcanoes but the one that forms some of the largest volcanoes in the world belongs to the group called “shield volcanoes.” A shield volcano can be as wide as three or four miles, and can stand as...
By: Elizabeth M Young
During the middle Pleistocene era, there were two oceanic plates: the Kula and Farallon plates. About 300,000 to 360,000 years ago, these two plates were subducted, or pushed beneath the western edge of the North American Plate and created a volcanic mountain that...
By: Eric Lannak
The emerald’s dark green color and shine have long made it a coveted and valuable stone. The first known emerald mines were in Egypt, dating to the fourth century BC, and Cleopatra used emeralds in her jewelry. The ancient Greeks likewise prized it, and...
By: Gareth Carmichael
Volcanic eruptions are one of the many splendid wonders Earth has to offer. Yes, they are devastating; yes they are, undeniably, natural disasters. That does not stop them from being truly magnificent to behold. Toxic plumes rising in the sky, competing with the densest of...

 

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