Category Archives: Volcanoes

Magmatic processes and igneous intrusions

Posted on April 26, 2008 by Rashid Faridi

  Magma What is magma? Properties of magmas Chemical composition What is magma? Magma is hot molten mobile rock. Igneous rocks form when magma cools and solidifies. Magmas come out of active volcanoes as lavas. The most abundant magma is … Continue reading →

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Lessons from St. Helens:Science of Prediction of Volcanoes

Posted on April 24, 2008 by Rashid Faridi

When earthquakes started jolting Mount St. Helens in March, 1980, little infrastructure was available to monitor the mountain or warn of an eruption. As the quakes continued, scientists scavenged seismographs and surveying equipment to take the mountain’s pulse. Their agenda … Continue reading →

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Volcanic Landforms,Volcanoes and Plate Tectonics

Posted on April 23, 2008 by Rashid Faridi

Volcanic Landforms Volcanic landforms are controlled by the geological processes that form them and act on them after they have formed. Thus, a given volcanic landform will be characteristic of the types of material it is made of, which in … Continue reading →

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Volcanic Gases and Their Effects

Posted on April 23, 2008 by Rashid Faridi

Sulfur dioxide gas creates air pollution in Hawai’i Volcanic gases are the driving force of eruptions Magma contains dissolved gases that are released into the atmosphere during eruptions. Gases are also released from magma that either remains below ground (for … Continue reading →

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