-
Pyroclastic Flow: A turbulent flow of pyroclastic material and hot
gases.
- Ring
of Fire: A zone of frequent earthquakes and volcanic eruptions,
surrounding the Pacific Ocean.
-
Scoria: Vesicular glassy lava rock composed of basalt and andesite
which is expelled from a vent during an explosive eruption.
-
Seismic Waves: The vibrations of the earth caused by an
earthquake.
-
Seismograph: An scientific instrument used to measure seismic
waves.
- Shield
Volcano: A smooth, dome-shaped volcano formed almost exclusively
by lava flows.
-
Stratovolcano: A volcano formed by lava flows and pyroclastic
material.
-
Strombolian Eruption: The gushing of basaltic lava,
or series of the intermittent explosions or from a single vent or
crater.
-
Subduction: One tectonic plate descending under another.
- Tephra:
Solid matter that is expelled from a volcanic vent or crater.
-
Tephrochronology: The collection, study and dating of tephra.
- Tuff:
Pyroclastic rock.
- Tuff
Cone: A steep-sided structure with deep, broad craters, formed by
Phreatomagmatic eruption.
- Tuff
Ring: A broad-sided buildup of hyaloclastic debris built around a
volcanic vent located in a lake, or other body of water.
- Vent:
An opening on the earth's surface from which volcanic material is
expelled.
-
Vesicle: A small air pocket, or cavity in volcanic rock, resulting
from a the entrapment of a gas bubble during solidification.
-
Volcano: A mountain-like, or cone-shaped opening in the earth's
crust through which magma, gases and ash erupt.
-
Volcanic Arc: A chain of volcanoes rising from the same subducting
plate.
-
Volcanic Cone: A mound made up of loose volcanic debris.
-
Volcanic Neck: The solid material filling the vent of an extinct
volcano.
- Vulcan:
The name of the Roman God of fire and the forge, from which the word
volcano is derived.
For a more detailed volcano
glossary, and up to the minute news on our world's active volcanoes, visit:
www.volcanolive.com
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