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Topic: Granulite

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	Granulite - LoveToKnow 1911
		To the German petrologists "granulite" means a more or less banded fine-grained metamorphic rock, consisting mainly of quartz and felspar in very small irregular crystals, and containing usually also a fair number of minute rounded pale-red garnets.
		The granulites are very closely allied to the gneisses, as they consist of nearly the same minerals, but they are finer grained, have usually less perfect foliation, are more frequently garnetiferous, and have some special features of microscopic structure.
		Meanwhile, however, Lehmann's advocacy of post-consolidation crushing as a factor in the development of granulites has been so successful that the terms granulitization and granulitic structures are widely employed to indicate the results of dynamometamorphism acting on rocks at a period long after their solidification.
	www.1911encyclopedia.org /Granulite (900 words)

	Granulite - Wikipedia, the free encyclopedia
		To the German petrologists granulite means a more or less banded fine-grained metamorphic rock, consisting mainly of quartz and feldspar in very small irregular crystals and usually also containing a fair number of minute, rounded, pale-red garnets.
		The granulites are very closely allied to the gneisses, as they consist of nearly the same minerals, but they are finer-grained, have usually less perfect foliation, are more frequently garnetiferous, and have some special features of microscopic structure.
		Meanwhile, however, Lehmanns advocacy of post-consolidation crushing as a factor in the development of granulites has been so successful that the terms granulitization and granulitic structures are widely employed to indicate the results of dynamometamorphism acting on rocks at a period long after their solidification.
	en.wikipedia.org /wiki/Granulite (926 words)

	Water Softeners - Glacia Granulite (Site not responding. Last check: 2007-10-13)
		Granulite is scientifically formulated to meet every one of your requirements: efficiency in operation, convenience of use, reliability of supply...
		Granulite particles are sized between 2mm and 6mm and, due to their high purity, large surface area and porosity, produce a premium quality brine that is required by today's high-efficiency water softening equipment.
		Granulite is packed in strong 25kg polythene bags which are palletised and stretch wrapped, to ensure that the product remains perfectly dry both in transit and storage.
	www.britishsalt.co.uk /watersofteners/granulite2.htm (363 words)

	Granulit - Wikipedia
		Somit treten Granulite in der unteren Erdkruste auf.
		Zumeist zeigen Granulite ein massiges, mittel- bis grobkörniges Gefüge.
		Bei der isobaren Abkülung kühlt der Granulit ohne nennenswerte Druckveränderung ab, was auf Wärmezufuhr durch z.
	de.wikipedia.org /wiki/Granulit (244 words)

	GRANULITE (Lat. granul... - Online Information article about GRANULITE (Lat. granul...
		The granulites are very closely, allied to the gneisses, as they consist of nearly the same minerals, but they are finer grained, have usually less perfect foliation, are more frequently garnetiferous, and have some See also:
		case the granulites are indistinguishable from certain varieties of See also:
		There are, however, many granulites which undoubtedly were originally sediments (arkoses, grits and sandstones).
	encyclopedia.jrank.org /GOA_GRA/GRANULITE_Lat_granulum_a_little.html (1105 words)

	THE QUEENS TUNNEL COMPLEX - A GRANULITE FACIES ORTHOGNEISS TERRANE EXPOSED IN NYC WATER TUNNEL #3 (Site not responding. Last check: 2007-10-13)
		Granulite facies metamorphism of predominately mesocratic intrusive rocks resulted in coarse granoblastic textures consisting of interlocking plagioclase, pyroxenes (opx+cpx), and garnet.
		This early phase of high-pressure granulite metamorphism dehydrated the rock mass and produced a tough fabric that was subsequently annealed under similar P-T conditions.
		Here, the coarse-grained "old" granulite textures were partially replaced by granular amphibole+garnet with oval garnet reaction rims and then by biotite grade metamorphism associated with late syntectonic pegmatites and a suite of glassy, post-tectonic rhyodacite dikes.
	gsa.confex.com /gsa/2001AM/finalprogram/abstract_21855.htm (475 words)

	Synagro Technologies, Inc. - Granulite
		Granulite improves soil yield and nutrient concentration for consumers—while helping improve the American economy and environment.
		Granulite’s particle sizing makes it ideal for use in fertilizer blends or for spreading directly on crops.
		When it comes to keeping your golf course green and lush, Granulite is a smart complement to your course management program: versatile, inexpensive and good for any plant or grass on the course.
	www.synagro.com /services/granulite.html (239 words)

	GRANULITE - LoveToKnow Article on GRANULITE
		To the German petrologists granulite means a more or less banded fine-grained metamorphic rock, consisting mainly of quartz and felspar in very small irregular crystals, and containing usually also a fair number of minute rounded pale-red garnets.
		The felspar of the granulites is mostly orthoclase or cryptoperthite; microcline, oligoclase and albite are also common.
		On account of the minuteness with which it has been described and the important controversies on points of theoretical geology which have arisen regarding it, the granulite district of Saxony (around Rosswein, Penig, andc.) may be considered the typical region for rocks of this group.
	95.1911encyclopedia.org /G/GR/GRANULITE.htm (897 words)

	PGS Spring 2003 Field Trip (Site not responding. Last check: 2007-10-13)
		As in the granulite gneiss, garnet coronas are present between pyroxene and plagioclase.
		These rocks are similar to the eastern granulites in the West Chester massif, described by Wagner and Crawford (1975) and are interpreted to be Proterozoic in age, though the metagabbro is clearly younger than the host gneiss.
		Granulite facies gneiss contains evidence for two periods of metamorphism: an older high temperature episode, which produced the granulite facies assemblages; and a younger metamorphic episode that resulted in the formation of garnet coronas and complete re-equilibration to amphibolite facies assemblages in some rocks.
	geology.wcupa.edu /hbosbysh/pgs_trip/stop4.htm (504 words)

	Agronomic Crops Team On-Farm Research Projects 1998, Special Circular 166-99 (Site not responding. Last check: 2007-10-13)
		Granulite sludge is a dried, pelletized source of organic nutrients with an analysis of at least 5-3-0.
		In the study areas, Granulite was applied during the fall of 1997 at the rate of 4,000 lbs/acre at a cost of $17 per ton.
		Granulite sludge may have contributed extra nitrogen to allow the lower sidedress nitrogen to yield equally well in the Knepley and Fruth fields; however, a check strip with no Granulite was not available to confirm this.
	ohioline.osu.edu /sc166/sc166_28.html (453 words)

	Agronomic Crops Team On-Farm Research Projects 1999, Special Circular 176-00, Effects of Granulite Sludge on Corn Yield (Site not responding. Last check: 2007-10-13)
		Granulite sludge is a dried, pelletized source of organic nutrients with an analysis of 5-3-0 of which 4.5% nitrogen is in the organic form and 0.5% inorganic nitrogen is readily available.
		In this study, Granulite was broadcast and incorporated the summer of 1998 on wheat stubble.
		The amount of release of usable nitrogen from Granulite sludge is difficult to predict.
	ohioline.osu.edu /sc176/sc176_29.html (330 words)

	Granulite - Encyclopedia.WorldSearch (Site not responding. Last check: 2007-10-13)
		Petrology, mineralogy and geochemistry of granulites of the Ford River and North River belts of Northern Labrador, Canadian Shield (Paper / Geological Survey of Canada)
		Signification géodynamique des domaines granulitiques: La ceinture des granulites de Laponie : une suture de collision continentale d'âge Protérozoïque...
		The pyroxene granulites of the Mount Wright map-area, Quebec-Newfoundland, (Geological Survey of Canada.
	encyclopedia.worldsearch.com /granulite.htm (1057 words)

	Granulite Gallery (Site not responding. Last check: 2007-10-13)
		Despite the very high grade of the Namaqualand granulites, there is enough petrographic evidence to indicate that the peak granulite assemblages and dehydration-melting features entirely post-date the major regional compressive deformation D2, and are approximately coeval with upright, ductile, but relatively low-strain deformation D3.
		Waters D.J. (1990) Thermal history and tectonic setting of the Namaqualand granulites, Southern Africa: clues to Proterozoic crustal development.
		Waters D.J. (1989) Metamorphic evidence for the heating and cooling path of Namaqualand granulites.
	www.earth.ox.ac.uk /~davewa/research/gallery/granulite-gallery.html (765 words)

	Granulit
		Granulite mit saurer oder basischer Zusammensetzung man am Auftreten von metamorph gebildetem Orthopyroxen.
		Zumeist zeigen Granulite ein massiges mittel- grobkörniges Gefüge.
		der IBC kühlt der Granulit ohne nennenswerte ab was auf Wärmezufuhr durch z.
	www.uni-protokolle.de /Lexikon/Granulit.html (225 words)

	Geotimes - July 2003 - Highlights - Metamorphism
		One controversy in granulite facies metamorphism concerns whether the "dry" mineral assemblages are residue after extraction of melt or whether such assemblages are consequent upon infiltration metasomatism by carbonic fluids.
		Under these circumstances, melting due to biotite breakdown in rocks of semi-pelitic composition is delayed until approximately 875 degrees Celsius, due to higher titanium and fluorine in biotite in the starting materials, which stabilize the materials to higher temperatures.
		The distribution of melt is important, because it relates to retrogression by reaction between peritectic phases formed at the metamorphic peak and melt during cooling (Richard W. White and Roger Powell, Journal of Metamorphic Geology, September 2002, v.
	www.geotimes.org /july03/high_metamorph.html (1476 words)

	Earth Materials, Experimental Petrology (Site not responding. Last check: 2007-10-13)
		At granulite facies conditions, determining formation ages is only possible with isotopic systems that have high closure temperatures, such as U-Pb in zircon and monazite.
		Zircons from a lower crustal metapelitic granulite (Val Malenco, N-Italy) display inherited cores with apparent ages spanning from 520 to 3050 Ma, and three metamorphic overgrowths with ages of 281±2, 269±3 and 258±4 Ma.
		The obtained ages indicate that the granulite facies metamorphism lasted for about 20 Ma and that heating rates were significantly higher than cooling rates.
	www.rses.anu.edu.au /pep/annualreports/annualreport2002/hermann1.htm (370 words)

	Geology of Greenland Survey Bulletin, no. 177
		Coastal exposure of purplish grey orthogneiss retrogressed from granulite facies, with angular fragments of homogeneous amphibolite.
		Syntectonic granulite facies metamorphism is thought to be due to heat accumulation by repeated injection of tonalitic magma.
		Widespread high-grade retrogression preserved a granulite facies core in the south-west; to the east the retrogressed gneiss grades into amphibolite facies gneiss not affected by granulite facies metamorphism and retrogression.
	www.geus.dk /publications/bull-gl/gree-177-dk.htm (635 words)

	GRANULITE- AND AMPHIBOLITE-FACIES METAMORPHISM IN A CONVERGENT-PLATE-MARGIN SETTING: SYNTHESIS OF THE QUEBEC-BAFFIN ...
		Granulite- and amphibolite-facies metamorphism in a convergent-plate-margin setting: synthesis of the Quebec-Baffin segment of the Trans-Hudson Orogen
		Abstract: The tectonometamorphic histories of basement and cover units in the eastern Trans-Hudson Orogen attest to the importance of structural, geohydrological, and magmatic controls on the attainment of metamorphic conditions in a convergent-plate-margin setting.
		In contrast, the attainment of greenschist- to amphibolite-facies conditions at mid-crust levels during plate collision is primarily a function of structural and geohydrological controls.
	www.nrc-cnrc.gc.ca /cisti/journals/mineral/37938-2.html (519 words)

	Lamb
		The presence of CO -rich fluid inclusions in many granulites may be evidence of a CO -rich peak metamorphic fluid, and may support the CO -infiltration hypothesis.
		Given these compositional constraints, evaluation of the stability of carbonates in granulites can largely be accomplished by examining the stability of calcite, dolomite-ankerite solid solutions, and magnesite-siderite solid solutions.
		Given that the end-member dol and ank are not stable in the presence of quartz at granulite P-T, it is unlikely that solid solutions with intermediate values of Fe and Mg would be stable.
	www.geology.wisc.edu /flincs/fi/pac6/lamb.html (1168 words)

	The History of Granulite-Facies Metamorphism and Crustal Growth from Single Zircon U-Pb Geochronology: Namaqualand, ... (Site not responding. Last check: 2007-10-13)
		Prograde transformation from amphibolite to granulite grade is recorded by pseudomorphed relics of andalusite and staurolite (Waters, 1989), assemblages that are consistent with low-pressure amphibolite facies (~700°C and 4 kbar).
		This is consistent with an interpretation of the two-pyroxene granulite as a sill in the ~1220 Ma Nababeep gneiss.
		The evolution of granulite terranes along an anticlockwise, isobaric cooling path at relatively shallow depths is relatively uncommon (Harley, 1989).
	library.iem.ac.ru /j-petr/12-4099/html/egc082_gml.html (9048 words)

	Metamorphic Facies & Metamorphism and Plate Tectonics
		The granulite and hornfels facies were named after the textures of the rocks, with hornfels being the rocks commonly found in contact metamorphic aureoles (high temperature, low pressure environments) and granulites being coarse grained rocks with a granulitic texture and being generally free of hydrous minerals.
		Furthermore, emplacement of batholiths and isostatic adjustment after magmatism has ceased cause these belts of high T, high P metamorphism to be uplifted and exposed at the surface.
		This can be seen in the northern Appalachians of New England, as shown in the map to the right, or in the southern Appalachians as seen on the map below, which illustrates the complexity of these belts due to the complex structural and deformational history of the collisional event.
	www.tulane.edu /~sanelson/eens211/metamorphic_facies.htm (1407 words)

	GNEISSES FROM THE GRANULITE TERRANE OF THE CENTRAL BOOTHIA UPLIFT, ARCTIC CANADA (Site not responding. Last check: 2007-10-13)
		Gneisses from the granulite terrane of the central Boothia Uplift, Arctic Canada
		The Boothia-Somerset granulite terrane probably represents an extension of the 1.9-2.0 Ga Taltson-Thelon orogen, noted for its high-temperature metamorphism and magmatism, but is marked by a distinctive syntectonic intrusive suite and the presence of gneissic protoliths of earliest Proterozoic age.
		Résumé : Des gneiss granitiques (s.l.) a orthopyroxène, des roches métamafiqueset des paragneiss a grenat-sillimanite, qui ont subi un métamorphisme au faciès granulite et l'intrusion d'un magma syénitique il y a 1.9 Ga, constituent la majorité des unités fortement déformées du socle cristallin de l'axe de soulèvement de Boothia, dans l'Arctique canadien.
	pubs.nrc-cnrc.gc.ca /mineral/44338-2.html (481 words)

	Research Interests - Granulite Facies (Site not responding. Last check: 2007-10-13)
		The formation of the granulite facies is a topic that has generated some debate, in part because granulite formation plays an important role in the stabilization of continental crust.
		Another line of evidence, often cited in support of CO -streaming, is the presence CO -rich fluid inclusions in rocks from the granulite facies.
		We tested the hypothesis that fluid inclusions contain samples of the peak metamorphic fluid by comparing the compositions of the fluid found in inclusions with the compositions of metamorphic fluids as inferred from fluid-buffering mineral equilibria.
	geoweb.tamu.edu /Faculty/Lamb/Research/ResInt-Granulites.html (408 words)

	Abebooks Search Results - Granulite
		Shear zone reactivation at granulite facies: the importance of plutons in the localization of viscous flow.
		The ultramafites and layered gabbro sequences in the granulite facies rockson Sternöy (Finnmark,Norway).Thesis.
		Granulite xenoliths from the western Dharwar Craton: constraints on the composition of the lower continental crust/A.G. Dessai.
	awww.abebooks.co.uk /search/sortby/3/kn/Granulite (2170 words)

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