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Basalt
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Basalt is a common gray to black extrusive volcanic rock. It is usually fine-grained due to rapid cooling of lava on the Earth's surface. It may be porphyritic containing larger crystals in a fine matrix, or vesicular, or frothy scoria. Unweathered basalt is black or gray.
Basalt magmas have formed by decompression melting of the Earth's mantle and by partial melting of rock in the interiors of Mars and the Earth's moon. Source rocks for the partial melts probably include both peridotite and pyroxenite (e.g., Sobolev et al., 2007). The crustal portions of oceanic tectonic plates are composed predominantly of basalt, produced from upwelling mantle below ocean ridges.
The term basalt is at times applied to shallow intrusive rocks with a composition typical of basalt, but rocks of this composition with a phaneritic (coarse) groundmass are generally referred to as dolerite (also called diabase) or gabbro. (...) more....
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AspenDailyNews
Basalt is on record pace for DUI arrests: Five alleged drunk drivers were arrested in Basalt over the past week.. http://tinyurl.com/mwnlvh
2009-06-12
AspenDailyNews
Outcry over firing of special-needs teachers: Parents and teachers are rising to the defense of a pair of Basalt.. http://tinyurl.com/lx4xaf
2009-06-12
Jamie_Emerson
In Basalt getting ready for the TT tomorrow, 5:40 pm start so I don't really know what to do.
2009-06-12
aspenradio
The Fire District in Basalt wants affordable housing for firefighters. More at 8:33
2009-06-11
visualizeaplace
Basalt Colorado summer concert series starts tonight. Check it out at http://www.basaltchamber.org
2009-06-11
ewoodhams
@pianissimou I live here year-round in Basalt (moved here in January). I was the development intern here last summer now work full time
2009-06-11
lajollamom
@AYCCarpet can you clean and seal basalt tile? I'm looking to have that done. It has Porous Plus on it right now but is overdue 4 sealing
2009-06-11
RickysRidge
Not so nice 11 mile ride out toward basalt. Terrific ride back on the path. Nice pull by Fiona. Did get a paceline going!
2009-06-10
AspenTwit
Basalt street party draws crowds: More than 2,500 attended the inaugural Summer Stimulus party http://tinyurl.com/n2cpcz RT @AspenDailyNews
2009-06-09
AspenDailyNews
Basalt street party draws crowds: More than 2,500 people attended the inaugural Basalt Summer Stimulus party on .. http://tinyurl.com/n2cpcz
2009-06-09
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