The formation of volcanoes

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  • Volcanic eruptions are awesome and destructive; however, this natural phenomenon is beneficial in the long term. One of the earliest known written records of a natural disaster concerned the eruption of Pompeii in A.D. 79, and was recorded by Pliny the Younger in his letters to the historian Tacitus (Jashemski, 1979). Volcanic eruptions, ranging in intensity and numbering between 17 and 27 per year during the past decade (Bullard, 1984), continue to remind us of their potential impacts on the environment.

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  • Volcanic Eruptions and Hazards: What is a volcano? A volcano is a vent or  'chimney' that connects molten  rock (magma) from within the  Earth’s crust to the Earth's  surface.  The volcano includes the surrounding cone of erupted material.

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  • Hydrocarbons provide our core energy resource. Information on their origin, properties and phase behavior is interesting from the point of view of physical chemistry. At the same time this information is of great value to the oil and gas industry. The book "Hydrocarbon" is comprised of 9 chapters, covering different topics: from origin of hydrocarbons to the method for hydrocarbon exploration. Distribution of polycyclic aromatic hydrocarbons in soil and their influence to environment are also discussed....

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  • By the time you have reached the end of this tutorial you will be able to construct a series of linked web pages for any subject that includes formatted text, pictures, and hypertext links to other web pages on the Internet. If you follow the steps for the Basic Level (lessons 1-14) you will develop a page about volcanoes and if you go on to the Advanced Level (lessons 15-29), you will create an enhanced volcano web site.

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