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Topic: Basalt

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Basalt fiber

Igneous rock

Gabbro

Tephrite

Latite

Tonalite

Amphibolite

Rock (geology)

Aphanitic

Hornfels

Basanite

Dacite

Lava dome

Rhyolite

	USGS Photo Glossary: Basalt
		Basalt is erupted at temperatures between 1100 to 1250° C. More about volcanic and plutonic rocks.
		Basalt is the most common rock type in the Earth's crust (the outer 10 to 50 km).
		Basaltic magma is commonly produced by direct melting of the Earth's mantle, the region of the Earth below the outer crust.
	volcanoes.usgs.gov /Products/Pglossary/basalt.html (0 words)

	Basalt - LoveToKnow 1911
		Olivine and augite are the commonest porphyritic minerals in basalts, the former green or yellowish (and weathering to green or brown serpentine), the latter pitch-fl.
		Basaltic lavas are frequently spongy or pumiceous, especially near their surfaces; and, in course of time, the steam cavities become filled with secondary minerals such as calcite, chlorite and zeolites.
		In the vitreous basalts sometimes very few crystallized minerals are observable; the greater part of the rock is a dark brown glassy material, almost opaque even in the thinnest sections, and generally charged with fl grains of magnetite, skeleton crystals of augite or felspar, spherulites, perlitic cracks, cmsteam vesicles.
	www.1911encyclopedia.org /Basalt (1208 words)

	Town of Basalt, Colorado
		Basalt is a quaint mountain community located at the confluence of two Gold medal trout streams, the Fryingpan and the Roaring Fork Rivers.
		We are a vibrant and diverse community offering a wealth of recreational opportunities both in Basalt and in the surrounding communities of Aspen, Snowmass Village, and Glenwood Springs.
		Rich in history, Basalt maintains a small town feel while offering a wide variety of restaurants and unique shopping.
	www.basalt.net (0 words)

	Field Trip to Mars - Kids - Basalt Lava
		Basalt rock up to 10,000 feet thick and consisting of more than 300 lava flows run for miles and miles under the semi-arid skies of eastern Washington.
		On top of the granite bedrock we find sediment layers from glacial lakes, boulders and debris from glaciers, channels in the basalt and gravel bars left by giant floods, and fertile loess (fine dirt) blown in on the winds.
		The material in basalt is from magma deep within the Earth's crust.
	www.kidscosmos.org /kid-stuff/kids-basalt.html (628 words)

	Basalt - Wikipedia, the free encyclopedia
		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 should generally be referred to as dolerite or gabbro.
		The shape, structure and texture of a basalt is diagnostic of the way it erupted and where it erupted - whether into the sea, in an explosive cinder eruption or as creeping pahoehoe lava flows, the classical image of Hawaiian basalt eruptions.
		Maar volcanoes are typical of small basalt tuffs, formed by explosive eruption of basalt through the crust, forming an apron of mixed basalt and wall rock breccia and a fan of basalt tuff further out from the volcano.
	en.wikipedia.org /wiki/Basalt (1174 words)

	basalt - Hutchinson encyclopedia article about basalt
		Basalt is a hard, igneous rock, formed by the rapid cooling of magma as it comes in contact with air.
		Columns of basalt at the coastal resort of Vik, in southern Iceland.
		The dark-coloured lowland maria regions of the Moon are underlain by basalt.
	encyclopedia.farlex.com /basalt (542 words)

	basalt. The Columbia Encyclopedia, Sixth Edition. 2001-05
		Basaltic magma is derived by partial melting of the peridotite that is found in the asthenosphere which reaches the mid-ocean ridges, such as the Mid-Atlantic Ridge, and forms the new oceanic crust, the uppermost layer of the lithosphere.
		Basalt dominates the mid-ocean islands and surrounding regions of the Hawaiian Islands and Iceland, as found by samples of lava flows found in drill cores recovered by vessels of the Deep Sea Drilling Project and the now defunct Project Mohole (see Mohole, Project).
		Basalt may be compact or vesicular, i.e., porous because of gas bubbles contained in the lava while it is solidifying.
	www.bartleby.com /65/ba/basalt.html (464 words)

	Basalt Continuous Fiber (Site not responding. Last check: )
		Basalt is a hard, dense, dark volcanic rock composed chiefly of plagioclase, pyroxene, and olivine, and often having a glassy appearance.
		The name "basalt" is usually given to a wide variety of dark-brown to fl volcanic rocks, which form when molten lava from deep in the earth's crust rises up and solidifies.
		Basalt differs from granite in being a fine-grained extrusive rock and having a higher content of Iron and Magnesium.
	www.albarrie.com /Filtration/fil-basalt.html (207 words)

	Basalt (Site not responding. Last check: )
		Basaltic lavas are frequently spongy or pumiceous; the steam cavities become filled with secondary minerals such as calcite, chlorite, and zeolites.
		Tholeiitic basaltic lavas are characterized by plagioclase with the pyroxenes augite, pigeonite or hypersthene.
		Alkali basalts predominate among the lavas of the ocean basins (divergent plate margins as pillow lava) and are common among the basic lavas of the forelands and backlands of the mountain belts.
	geology.csupomona.edu /alert/igneous/basalt.htm (373 words)

	Basalt fiber - Wikipedia, the free encyclopedia
		Basalt fiber or fibre is a material made from extremely fine fibers of basalt, which is composed of the minerals plagioclase, pyroxene, and olivine.
		The manufacture basalt fiber requires the melting of the quarried basalt rock to about 1,400°C. The molten rock is then extruded through small nozzles to produce continuous filaments of basalt fiber.
		Since declassification in 1995 basalt fibers have been used in a wider range of civilian applications.
	en.wikipedia.org /wiki/Basalt_fiber (261 words)

	UNFORBIDDEN GEOLOGY (Site not responding. Last check: )
		Basalt is a very fine-grained extrusive igneous rock consisting of calc-plagioclase (bytownite to labradorite) and pyroxene (commonly augite, pigeonite, and hypersthene), with apatite, magnetite, and olivine commonly present.
		These basalt deposits are a member of the Qatrani Formation and are of late Oligocene age (Siad, 1962) representing basalt surface flows, some of which are up to 25 m in thickness (Beadnell, 1905).
		Other deposits of basalt are found at Abu Za'bal, northwest of the Giza pyramids, southwest of Samalut in the Cairo-Suez desert, Aswan, the Baharia desert, and in the Sinai and Eastern desert (Siad, 1962).
	www.geocities.com /unforbidden_geology/basalt.html (515 words)

	Zavod izoliacii / Equipment / Basalt fiber tissue plant (Site not responding. Last check: )
		Basalt tissue is not susceptible to atmospheric agents or to UV rays, is supple and traction resistant, will not rot and is dimensionally stable.
		Basalt fiber tissue is used as a coating for insulation panels and rolls.
		In general basalt fiber tissue is used in construction of ground structures, substructures, dumps, roads, railroads, buildings, roofs, tunnels, hydraulic structure and everywhere basalt tissue carries out very important functions such as decommutation, protection, filtration and drainage.
	www.basaltfibre.com /eng/equip/holstline (1690 words)

	GemRocks: Basalt
		Examples are the Cape Foulweather Basalt and the Picture Gorge Basalt of the Columbia River Basalts of the Columbia River Plateau region of Washington, Oregon and Idaho.
		Amygdaloidal basalt - Two examples are: 1.an attractive polished slab that is "dead fl" with sparse salmon-colored feldspar amygdules (Figure A) and 2.a brownish, somewhat altered basalt with diversely shaped and sized white quartz, green epidote and salmon-colored feldspar amygdules.
		Today, basalt continues to be used by sculptors and carvers who fashion pieces most of which are sold as decorative articles ranging from relatively inexpensive souvenirs to objets d'art with price tags of tens of thousands of dollars.
	www.cst.cmich.edu /users/dietr1rv/basalt.htm (1123 words)

	Basalt Powder / Basalt Fiber / Basalt Sand / Basalt Rock from READE
		b) Basalt is a hard, dense, dark volcanic rock composed chiefly of plagioclase, pyroxene, and olivine, and often having a glassy appearance.
		Basalt based composites can replace steel and all known reinforced plastics (1 kg of basalt reinforcement equals 9.6 kg of steel).
		The life of basalt fiber pipes, designed for a variety of applications, could be at least 50 years without maintenance or electrical or technical protection.
	www.reade.com /Products/Minerals_and_Ores/basalt.html (585 words)

	Basalt and Granite
		The volcanoes that make basalt are very common, and tend to form long and persistent zones of rifting in nearly all of the ocean basins.
		Basalt is commonly very fine grained, and it is nearly impossible to see individual minerals without magnification.
		Basaltic crust is dark and thin and heavy, while granite is light and accumulates into continent-sized rafts which bob about like corks in this "sea of basalt." When a continent runs into a piece of seafloor, it's much like a Mac truck running into a Volkswagon.
	jersey.uoregon.edu /~mstrick/AskGeoMan/geoQuerry27.html (826 words)

	card 10 BASALT (Site not responding. Last check: )
		Picture 1 shows a handsample of basalt, which is usually fl in color.
		Basalt erupts on the ocean floor at ocean ridges.
		The islands of Hawaii are mostly composed of layer upon layer of basalt which crystallized from flows initially erupting from submarine volcanos.
	seis.natsci.csulb.edu /basicgeo/BASALT/BASALT.html (191 words)

	Basalt, Colorado (CO) Detailed Profile - relocation, real estate, travel, jobs, hospitals, schools, crime, news
		Back to Basalt, CO housing info, Eagle County, Colorado big cities, CO smaller cities, CO small cities, All Cities.
		Basalt, Colorado business and economic data: stores, dealers, real estate agents, wholesalers, restaurants...
		Back to Basalt, CO housing info, Eagle County, Colorado, CO smaller cities, CO small cities, All Cities.
	www.city-data.com /city/Basalt-Colorado.html (1504 words)

	basalt articles on Encyclopedia.com (Site not responding. Last check: )
		basalt BASALT [basalt], fine-grained rock of volcanic origin, dark gray, dark green, brown, reddish, or fl in color.
		Basaltic magma is derived by partial melting of the peridotite that is found in the asthenosphere which
		Its cliffs, of limestone and basalt, rise at Slieveacarn to 449 ft (137 m).
	www.encyclopedia.com /searchpool.asp?target=basalt&Submit.x=50&Submit.y=13 (427 words)

	Basalt Rocks
		Basalt is an extrusive igneous rock that is very dark in color.
		Basalt also contains some light colored minerals such as feldspar and quartz, but the amounts are small.
		Basalt forms when lava reaches the Earth's surface at a volcano or mid ocean ridge.
	www.windows.ucar.edu /tour/link=/earth/geology/ig_basalt.html (255 words)

	Untitled
		Basalt is one of the most common igneous rocks found.
		It is the major constituent of the upper layer of the ocean floors (usually as pillow lava), and hot spot volcanoes (such as the Hawaiian islands).
		Basalt commonly forms on the continents too, usually the result of hot spot activity.
	csmres.jmu.edu /geollab/Fichter/IgnRx/Basalt-1A1.html (219 words)

	Geological Society - Teaching Resources - Flood Basalts, Mantle Plumes and Mass Extinctions (Site not responding. Last check: )
		If there is a causal link between flood basalt events and mass extinctions, it may lie in the environmental impact of the gases released, because basalt eruptions are not particularly explosive.
		Basaltic magmas are often very rich in dissolved sulphur, and sulphuric acid aerosols formed from sulphur volatiles (largely SO) are injected into the stratosphere by convective plumes rising above volcanic vents and fissures.
		Although the correlation between some flood basalt episodes and extinctions may implicate volcanism in the extinctions, it is also possible that other factors lead to an apparent association.
	www.geolsoc.org.uk /template.cfm?name=fbasalts (1166 words)

	Decorative Cast Basalt Sales, Ltd. :: FAQ
		In studies conducted by independent laboratories, basalt tile proved to be far more durable and to have less long-term cost of any material tested including vinyl, carpet, and wood.
		Basalt tiles never need waxed, but if you prefer shine that is greater than normal it can be waxed or polished polyurethane.
		Basalt tile is a dense, thermal product that absorbs both heat and cold.
	www.decorativebasalt.com /faq.htm (368 words)

	Neighborhood Rocks: Scoria Basalt
		Basalt is a plain, gray rock with an exciting history -- it formed as lava erupted from a volcano, cooled, and hardened.
		Basalt is made mostly of tiny crystals, but it may contain scattered larger crystals.
		Basalt is an extrusive igneous rock, because it formed from lava "extruded" onto the surface of the Earth.
	saltthesandbox.org /rocks/basalt.htm (520 words)

	aspentimes.com Topic Index - BASALT
		Carter and Erin Holmes of Basalt and Roger and Amelia Eshelman of Carbondale are pleased to announce the engagement of Makenzie Holmes and Thaddeus Eshelman.
		Basalt native Janice Duroux cringes at the thought of presenting Basalt history in a stale setting in which displays of artifacts sit on shelves and gather dust but little interest.
		Basalt girls basketball coach Carolyn Compton said her three seniors deserved better Saturday after the Longhorns' season came to a close with a 36-36 loss against Colorado Springs Christian.
	apps.aspentimes.com /topics/Basalt.html (2642 words)

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