Research topic:lava

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blocky lava

A Dictionary of Earth Sciences | 1999 | | © A Dictionary of Earth Sciences 1999, originally published by Oxford University Press 1999. (Hide copyright information) Copyright

blocky lava A surface flow of hot, molten lava covered in a carapace of crystalline, angular blocks which tend to be smoothly faceted and may have dimensions up to several metres. The blocks, which have the same composition as the flow interior, are formed by fragmentation of the chilled flow surface as lava continues to move within the flow interior. Blocky lava morphology is usually confined to lavas of high viscosity and intermediate to high silica contents.

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AILSA ALLABY and MICHAEL ALLABY. "blocky lava." A Dictionary of Earth Sciences. 1999. Encyclopedia.com. 10 Dec. 2009 <http://www.encyclopedia.com>.

AILSA ALLABY and MICHAEL ALLABY. "blocky lava." A Dictionary of Earth Sciences. 1999. Encyclopedia.com. (December 10, 2009). http://www.encyclopedia.com/doc/1O13-blockylava.html

AILSA ALLABY and MICHAEL ALLABY. "blocky lava." A Dictionary of Earth Sciences. 1999. Retrieved December 10, 2009 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O13-blockylava.html

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Book article from: A Dictionary of Earth Sciences lava channel The depression between two parallel and closely spaced retaining walls ( lava levées ) in which a flow of lava is confined. The retaining walls are composed of cooled blocks...

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