Lava
Lava is molten rock expelled by a volcano during an eruption. When first expelled from a volcanic vent, it is a liquid at temperatures from 700 °C to 1,200 °C (1,300 °F to 2,200 °F). Although lava is quite viscous, with about 100,000 times the viscosity of water, it can flow great distances before cooling and solidifying, because of its thixotropic and shear thinning properties.
A lava flow is a (moving) outpouring of lava, which is created during a non-explosive effusive eruption. When it has stopped moving, lava solidifies to form igneous rock. The term lava flow is commonly shortened to lava. Explosive eruptions produce a mixture of volcanic ash and other fragments called tephra, rather than lava flows. The word 'lava' comes from Italian, and is probably derived from the Latin word labes which means a fall or slide. The first use in connection with extruded magma (molten rock below the earth's surface) was apparently in a short account written by Francesco Serao on the eruption of Vesuvius between May 14 and June 4, 1737. Serao described "a flow of fiery lava" as an analogy to the flow of water and mud down the flanks of the volcano following heavy rain.
A lava flow is a (moving) outpouring of lava, which is created during a non-explosive effusive eruption. When it has stopped moving, lava solidifies to form igneous rock. The term lava flow is commonly shortened to lava. Explosive eruptions produce a mixture of volcanic ash and other fragments called tephra, rather than lava flows. The word 'lava' comes from Italian, and is probably derived from the Latin word labes which means a fall or slide. The first use in connection with extruded magma (molten rock below the earth's surface) was apparently in a short account written by Francesco Serao on the eruption of Vesuvius between May 14 and June 4, 1737. Serao described "a flow of fiery lava" as an analogy to the flow of water and mud down the flanks of the volcano following heavy rain.
Lava
Lava news
Updated every 30 minutes
- Book review: 'In the Heart of the Canyon' by Elisabeth Hyde
- The trip's climax will be Lava Falls, a rapid that's rated a 10 on a scale of one to 10. JT has run it countless times, but this time will be different. ...
- Weekend Window to the Giant's Causeway
- "Through cracks in the Earth's crust, lava poured out and it started to settle into what was then an ancient river bed. And it started to cool very slowly ...
- Fire has burned 139 acres in Zion
- The fire is located about two miles from Lava Point. The West Rim Trail from Lava Point to Potato Hollow has been temporarily closed as a result.
- PHIVOLCS watches Mayon closely
- ... rather then the less life-threatening lava flows, scientists told the first meeting of the Provincial Disaster Coordinating Council (PDCC) here today. ...
Lava Photos
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Swimming Hole
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Lava blogs
Updated every 30 minutes
- Goodz, Arsenal, Hot Lava & Black Harlem Freestyle video | MVRemix ...
- Goodz, Arsenal, Hot Lava & Black Harlem Freestyle video.
- Meet Lava! - Rescue Me | DogTime - Dog Blog Network
- At just a little over one Lava is full of puppy energy! He is looking for a avid runner or outdoors person/family to match his energetic personality. With a strong lean athletic build Lava makes the perfect companion for all your ...
- Kilauea Volcano Lava Flow Hawaii : My[confined]Space
- Kilauea Volcano Lava Flow Hawaii. Posted on July 12, 2009 by Puulaahi Filed Under Images and has been tagged: 2 votes, average: 5.00 out of 5 (2 votes, average: 5.00 out of 5) You need to be a registered member to rate this post. ...
- Paintball Fun » Blog Archive » Lava Lamp andamp; Bulb Cell Phone ...
- img src=http://www.thinkawesome.com/im/xmas07/sml/039.jpg border=0 align=right Finally, a mobile phone accessory that's practical and still looks cool! Choose a lava lamp or a light bulb design and never miss another phone call.
Lava gifts
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LAVA 20-oz. Motion Lamp - Yellow/Blue
Amazon Price: $14.99 (as of 07/12/2009) 
List Price: $14.99
Usually ships in 24 hours
Lava Heavy-Duty Hand Cleaner with Moisturizers 5.75 oz (163 g)
Amazon Price: $1.99 (as of 07/12/2009)
List Price: $3.99
Usually ships in 1-2 business days
Lava 7.5oz Liquid Pump Bottle Heavy Duty Hand Cleaner
Amazon Price: $2.59 (as of 07/12/2009)
List Price: $5.99
Usually ships in 24 hours
Lava Bubbles (Full Screen Lava Lamps)
Amazon Price: $9.99 (as of 07/12/2009)
List Price: $9.99
Usually ships in 24 hours
Lava vids
Lava gifts
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Lava
Lava links
- Questions about Lava
- Questions about Lava...
- What is Lava?
- Brief and Straightforward Guide: What is Lava?
- Lava Beds National Monument (U.S. National Park Service)
- The Official Home Page of Lava Beds National Monument.
- CVO Menu - Mount St. Helens - Lava Dome
- USGS/Cascades Volcano Observatory, Vancouver, Washington
Mount St. Helens, Washington
Lava Dome Background and Information DESCRIPTION: Mount St. Helens Lava Dome
SUMMARY - Mount St. Helens Eruptions since May 18, 1980
FACT SHEET: Mount St. Helens... - Lava Flow Hazard Zones on the Island of Hawai`i
- Description of lava-flow hazard zones on the Island of Hawai.
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