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| | It was going to be a journey of a lifetime, a journey that millions dream of and never make, and I wanted to do justice ... (Site not responding. Last check: 2007-10-20) |
 | | Most of the continental mountain belts occur where plates are pressing against one another. |
 | | Pyroclastic-fall deposited, referred to as tephra, consist of combinations of pumice, scoria, dense-rock material, and crystals, that range in size from ash (64 millimeters). |
 | | Eruptions that produce tephra range from short-lived weak ones that eject debris only a few meters into the air, to cataclysmic explosions that throw debris to heights of several tens of kilometers. |
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