tuff

Porous igneous rock composed of volcanic ash compacted together.
Found on http://www.encyclo.co.uk/local/22291

Tuff

Tuff (from the Italian tufo) is a type of rock consisting of consolidated volcanic ash ejected from vents during a volcanic eruption. Tuff is sometimes called tufa, particularly when used as construction material, although tufa also refers to a quite different rock. Rock that contains greater than 50% tuff is considered tuffaceous. == Volcanic ash...
Found on http://en.wikipedia.org/wiki/Tuff

Tuff

• (n.) Same as Tufa.
Found on http://thinkexist.com/dictionary/meaning/tuff/

tuff

noun hard volcanic rock composed of compacted volcanic ash
Found on https://www.encyclo.co.uk/local/20974

Tuff

A consolidated rock composed of pyroclastic fragments and fine ash. If particles are melted slightly
Found on http://www.encyclo.co.uk/local/22392

Tuff

A fine-grained rock composed of volcanic ash.
Found on http://www.evcforum.net/WebPages/Glossary_Geology.html

tuff

A general term for all consolidated pyroclastic rock. Not to be confused with tufa.
Found on https://www.encyclo.co.uk/local/22327

tuff

a relatively soft, porous rock that is usually formed by the compaction and cementation of volcanic ash or dust. (The Italian term tufa is sometimes ... [4 related articles]
Found on http://www.britannica.com/eb/a-z/t/90

Tuff

Cemented volcanic ash, many varieties included.
Found on http://www.contractorschoolonline.com/Masonry-Glossary.aspx

Tuff

Cemented volcanic ash; many varieties included.
Found on http://www.selectstone.com/architectural-resources/stone-glossary/

tuff

n. A general term for consolidated rocks made of material ejected from volcanic explosions.
Found on http://www.ucmp.berkeley.edu/glossary/glossary_2.html

tuff

n. A general term for consolidated rocks made of material ejected from volcanic explosions.
Found on http://www.ucmp.berkeley.edu/glossary/gloss2geol.html

Tuff

Rock composed of fine volcanic ash.
Found on http://www.libertystaruranium.com/miningexplained/mining-geology-glossary/

Tuff

Rock formed of pyroclastic material.
Found on http://midju.tripod.com/glossary.html

Tuff

Rock formed of pyroclastic material.
Found on http://www.encyclo.co.uk/local/21455

Tuff

Rock formed of pyroclastic material.
Found on http://jersey.uoregon.edu/~mstrick/geology/geo_glossary_page.html

tuff

See below soil type,
Found on https://glossary.wein-plus.eu/tuff

tuff

The general term for consolidated pyroclastic debris.
Found on http://www.solarviews.com/eng/terms.htm

tuff

tough
Found on http://www.noslang.com/dictionary/t/

Tuff

Tuff is another name for tufa.
Found on http://www.probertencyclopaedia.com/browse/HT.HTM

tuff

[n] - hard volcanic rock composed of compacted volcanic ash
Found on http://www.webdictionary.co.uk/definition.php?query=tuff
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