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Topic: Conglomerate (geology)

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	Conglomerate (geology) - MSN Encarta
		Conglomerate (geology), aggregate of sedimentary rock fragments cemented in a matrix of silica, calcite, or limonite.
		Though some conglomerates are the result of the action of glaciers, most are formed after deposition along the shores of bodies of water, where they are rounded by stream action.
		In North America, conglomerates are found in Canada, in northern Michigan and Wisconsin, and underneath the coal beds of Pennsylvania and adjacent states.
	encarta.msn.com /encyclopedia_762508344/Conglomerate_(geology).html (167 words)

	Conglomerate
		Conglomerates are sedimentary rocks consisting of rounded clasts and are thus differentiated from breccias, which consist of angular clasts.
		A spectacular example of conglomerate, the Crestone Conglomerate, may be viewed in and near the town of Crestone, Colorado at the foot of the Sangre de Christo Range in Colorado's San Luis Valley.
		The Crestone Conglomerate is a metamorphic rock statum and consists of tiny to quite large rocks that appear to have been tumbled in an ancient river.
	www.teachersparadise.com /ency/en/wikipedia/c/co/conglomerate.html (189 words)

	Search Results for "Geology"
		geology, science of the earth's history, composition, and structure, and the associated processes.
		...spring, in geology, in geology, natural flow of water from the ground or from rocks, representing an outlet for the water that has accumulated in permeable rock strata...
		...conglomerate, in geology, in geology, sedimentary rock composed largely of pebbles or other rounded particles whose diameter is larger than 2 mm (.08 in.).
	www.bartleby.com /cgi-bin/texis/webinator/sitesearch?query=Geology&filter=colReference (236 words)

	conglomerate- FREE conglomerate Information \| Encyclopedia.com: Facts, Pictures, Information!
		Conglomerate mergers are undertaken for many reasons, including the prospect of making additional use of existing facilities, improving the...
		conglomerate In geology, a sedimentary rock made up of rounded pebbles embedded in a fine matrix of sand or silt, commonly formed along beaches or on river beds.
		Conglomerates on trial: conglomerates have taken a battering from management theorists.
	www.encyclopedia.com /SearchResults.aspx?Q=conglomerate (1328 words)

	Geology of Salt Point State Park, CA
		Geology of Salt Point State Park, CA Salt Point State Park provides the visitor spectacular vistas of the ocean, with rugged offshore rocks and steep sea cliffs that take the full impact of the waves.
		The thick layers of sandstone alternating with layers of conglomerate and mudstone in a particular succession, forms a pattern that is interpreted to have been deposited by flows of dense, turbulent sediment-laden water flowing down a submarine canyon.
		The sandstones and conglomerates at Salt Point are thought to have formed in the channels, and the thinner beds of sandstone and mudstones are thought to have formed in between the channels on a large submarine deep-sea fan millions of years ago.
	eqdoc.home.netcom.com /salt2.html (3485 words)

	Honduras Geology
		The Tabacón beds are composed of maroon to green, cobble to boulder, subangular to angular breccia and conglomerate of quartzite, volcanic rock, quartz, and minor red sandstone clasts.
		The limestone clast conglomerate of the Valle de Angeles Group was always found south of and distal from the exposed Honduras Group highlands.
		It can be stated that the associated environmental, land use and cultural impact of any hydropower development in the Project Area would be severe, altering dramatically and forever the identity of the indigenous people who depend on the rivers and the nature of the flora and fauna of their environment.
	geology.csustan.edu /rrogers/honduras/wampu.htm (7166 words)

	Waterloo Quarry Conglomerate
		The conglomerate itself is composed of quartzite clast and sandstone.
		This same conglomerate is seen to the northeast along Hubbleton Rd, (Luther, 1992) as well as along the western edge of the quarry.
		Due to the lack of quartzite in the nearby areas, we suggest that the surrounding quartzite beds are the source of the quartzite clasts in the conglomerate.
	www.uwm.edu /Dept/Geosciences/fieldtrips/ugfc/waterloo_quarry/waterloo_conglomerate.html (641 words)

	conglomerate
		Conglomerate is evidently gravel compacted into a more or less coherent mass.
		Like coarse gravel and shingle, some conglomerates are very tumultuous in appearance, and show no lines or planes of deposition.
		Conglomerates are generally beach-deposits, either marine or lacustrine; sometimes they are of fluvial origin.
	www.daviddarling.info /encyclopedia/C/conglomerate.html (148 words)

	conglomerate, in geology. The Columbia Encyclopedia, Sixth Edition. 2001-07
		in geology, sedimentary rock composed largely of pebbles or other rounded particles whose diameter is larger than 2 mm (.08 in.).
		Essentially a cemented gravel, conglomerates are formed along beaches, as glacial drift, and in river deposits.
		Conglomerates formed of angular shaped pebbles are called breccias.
	www.bartleby.com /65/co/conglom-geo.html (100 words)

	City of Newton--Planning & Development
		The Roxbury Conglomerate was deposited at the foot of high mountains by streams which washed sediment down the mountains and out to sea.
		The interfingering of the Slate and the Roxbury Conglomerate suggests alternations in the rhythm of transportation of particles.
		The surface distribution of slate, conglomerate and volcanics in the Newton area is shown in Figure 3.
	www.ci.newton.ma.us /Planning/Geology.htm (780 words)

	Volume 17 No. 2
		The Estes Conglomerate, which is exposed in the Nemo District on the northeastern flank of the Black Hills, South Dakota, is inferred to be of early Proterozoic age (early Precambrian X or Paleoaphebian of Canada) and to be resting on granitic continental crust of late Archean age (late Precambrian W of former usage).
		The high thorium and gold values in the oligomictic conglomerate favor a placer mechanism for the concentration of radioactive minerals, and the thorium appears to eliminate the possibility that mineralization is the product of low-temperature epigenetic processes, such as reduction and fixation of uranium by pyrite.
		Uranium in the Estes Conglomerate may be of an origin similar to the origin of the economically very important uranium deposits in the Matinenda Formation of the Elliot Lake District, Ontario.
	pubs.gg.uwyo.edu /CTGs/CTG_17-2.htm (2260 words)

	The Bedrock Geology of Mount Battie, Camden, Maine
		Conglomerates are sedimentary rocks that accumulated at places like pebble beaches or in offshore basins or channels where small stones might accumulate.
		The sequence of rocks that comprise the Battie Quartzite, from conglomerate to bedded conglomerate and quartzite to bedded quartzite, suggests they were deposited in an ocean basin.
		Current estimates of the positions of continents at that time suggest that the ocean we are talking about is the Iapetus Ocean (predecessor of the Atlantic), and that the sediments of this part of Maine accumulated near the south margin of that ocean, not far from the South Pole.
	www.maine.gov /doc/nrimc/mgs/explore/bedrock/sites/jul01.htm (1332 words)

	CENTRAL GEOLOGICAL SURVEY, MOEA
		The E conglomerate, named by Yen and others (1956), was proposed as a basal conglomerate separating, the "Cretaceous" Pihou Formation from the Eocene slate in northeastern Taiwan and has already been discussed in the section "age and fossils".
		The conglomerate occurs in several discrete bulging patches or lenses interbedded at varying horizons in the slate and is not restricted to a definite horizon separating two different rock units.
		This conglomerate was named the N conglomerate by L. Chang (1972) to mark a possible Oligocene hiatus or unconformity between Miocene and Eocene in the slate belt.
	www.moeacgs.gov.tw /english/twgeol/twgeol_western_16.jsp (3600 words)

	The Geology of the San Juan Islands (Triassic System)
		The pebbles of the conglomerate are composed of andesite, granodiorite, diorite, chert, argillite, graywacke, and specimens of all of the known older formations.
		There are five horizons of this conglomerate and their general strike is N 80° W. They dip to the southward at angles of 20-30 degrees.
		This conglomerate forms a ridge that extends from one end of the island to the other, and it connects the two main parts of the island.
	www.nps.gov /history/history/online_books/geology/publications/state/wa/uw-1927-2/sec3b.htm (3124 words)

	City of Newton--Planning & Development
		The conglomerate contains quartzite, granite and felsite pebbles which are rounded to sub-rounded in shape.
		Outcrops of sandstone embedded in the conglomerate can be seen along the east side of Hammond Pond Parkway or along the bend in the main path in the Reservation.
		Trees growing in joints in the conglomerate in the hemlock grove on the west side of the Reservation.
	www.ci.newton.ma.us /Planning/Geology2.htm (663 words)

	Greens Creek Geology Page
		One striking example that has yet to be fully developed is the relationship of conglomerates and buckshot pyrite at Greens Creek to similar features in the Witwatersrand gold deposits--deposits that have produced about half of the world's total gold.
		Conglomerate is noted as being mostly derived from the footwall phyllites.
		The conglomerates (or pseudoconglomerates) at Greens Creek have some characteristics in common with the conglomerates at Witwatersrand.
	www.erictwelker.com /greenscreek.htm (7276 words)

	Geology and Topography of Race Rocks
		An interesting discovery was made in 2005 on the preliminary dives to examine the substrate where the tidal current generator was going to be installed, The bottom at location 1, just North of the docks at Race Rocks, yielded a conglomerate type of rock surface at 15 meter depth in the channel.
		Conglomerate rock overlays the igneous rocks although it has been eroded away in many places.
		The source of the "boulders" within the conglomerate is often from within the Metchosin Complex but there may also be sources from other parts of Vancouver Island.
	www.racerocks.com /racerock/abiotic/geology/geology.htm (1050 words)

	Suggested New Vocabulary for Disaster Newscasters
		In geology, a conglomerate is a sedimentary rock composed mainly of largeish, rounded to sub-rounded chunks, cemented together in a matrix of smaller grains.
		A fanglomerate is a specific type of conglomerate, namely one that has formed in an alluvial fan, where a fast-flowing mountain stream exits onto the plain in a series of shifting braided channels.
		While a conglomerate consists of pebbles that’ve been knocked around a while and had their sharp edges worn away, a breccia is formed of jagged pieces, often freshly torn by a volcano, landslide, or other traumatic event.
	greengabbro.net /2005/09/02/suggested-new-vocabulary-for-disaster-newscasters (235 words)

	Bibliography for provenance using conglomeratic clasts
		Dorr, W., Floyd, P.A., and Leveridge, B.E. (1999) U-Pb ages and geochemistry of granite pebbles from the Devonian Menaver Conglomerate, Lizard peninsula: provenance of Rhenohercynian flysch of SW England.
		Hidaka, H., Shimizu, H., and Adachi, M. (2002) U-Pb geochronology and REE geochernistry of zircons from Palaeoproterozoic paragneiss clasts in the Mesozoic Kamiaso conglomerate, central Japan: evidence for an Archean provenance.
		is the Campanile Charities Professor of Geology and Geophysics at Louisiana State University whose research specialty is metamorphic petrology.
	www.geol.lsu.edu /henry/Geology7900/Bibliographies/Provenance-conglomerates.htm (450 words)

	conglomerate - Definitions from Dictionary.com
		Geology A rock consisting of pebbles and gravel embedded in cement.
		Conglomerates diversify their business risk through profit gained from profit centers in various lines of business.
		Conglomerates were popular among investors during the 1960s but investors' interest in them faded during the 1970s and the 1980s.
	dictionary.reference.com /browse/conglomerate (1008 words)

	ISGS - Why study glacial and Quaternary Geology
		These conglomerates were derived from the Canadian Shield rocks (Precambrian Lorrain Formation) that crop out north and northwest of Bruce Mines, which is located in Ontario along the north shore of Lake Huron.
		The Lorrain Formation contains rocks associated with Precambrian glaciation, and the jasper conglomerates are attributed to sand and pebbles derived by erosion from older rocks and redeposited as gravity flows in water.
		Later these materials were lithified to form conglomerates and transformed by heat and pressure of later volcanic activity to form quartzite conglomerates.
	www.isgs.uiuc.edu /research/glacial-geology/conglomerates.shtml (158 words)

	pg 039: Geology of the Marathon region, Texas Publication 6445288
		At Monument Spring fine conglomerates in the upper part of the lower member are interbedded with lenses and layers of fl chert a few inches thick, which are clearly not transported and are probably not due to replacement of some previous rock (fig.
		-In the Dagger Flat anticlinorium the conglomerate beds of the Maravillas chert are fewer and thinner, and the differentiation between the lower calcareous and the upper cherty parts of the formation is not sharply marked.
		Near the middle of the formation along the southeast flank of the anticlinorium there are reef-like aggregates of bryozoans, some of which form massive beds with a maximum thickness of 10 feet.
	www.lib.utexas.edu /books/landscapes/publications/txu-oclc-6445288/txu-oclc-6445288-b-039.html (445 words)

	pg b205a: First annual report of the Geological Survey of Texas Publication 5235917-1
		Near Rochelle, the conglomerate attains a maximum thickness of fifty feet, and because of its development at Rochelle I propose the name of Rochelle Conglomerate bed of the Richland Sandstone division.
		Traced northeastward the conglomerate becomes finer grained, is very much cross-bedded, is interbedded with layers of sandstone, and eventually becomes, near the Colorado, a conglomeritic sandstone with thin layers of conglomerate.
		This shale grades from the conglomerate below to an argillaceous shale above, and is overlaid by a deposit of clay 15 feet thick, with scattered nodules of clay ironstone.
	www.lib.utexas.edu /books/landscapes/publications/txu-oclc-5235917-1/txu-oclc-5235917-1-b205a.html (513 words)

	Description of the Geology of Warren County Pennsylvania
		All the highest highlands of the southern half of the county consist of massive coarse Olean conglomerate, sloping gently south-westward at a rate of 16 feet per mile;= consequently the only coal beds in the county are the Sharon and perhaps Scrubgrass coals, and nowhere of much importance.
		The outcrops of the Sub-olean conglomerate form cliffs and steep bluffs along all the valleys and ravines; the lower slopes consist of Crawford shales, in the upper part, and the Venango oil sand group (300` thick) in the lower part.
		Here the highest summits are capped by Olean conglomerate and Sharon shales, and (in Deerfield) by Kinzua sandstone (middle XII.); the general highland by Shenango shales and Sub-Olean conglomerate; and along the river bluffs run the three Mountain Sands of Oil Creek.
	www.libraries.psu.edu /emsl/guides/X/warren.htm (1165 words)

	SDSU - Department of Geological Sciences - SDSU Geology
		Overlying the Friars Formation is the Stadium Conglomerate, a unit composed of coarse sandstone and conglomerate with pebble to cobble sized clasts (show me).
		The lithology and sparse fossils found in these three formations suggest that they were deposited in a variety of environments including floodplain, beach, lagonal, and as a deltaic complex that covered the older igneous rocks of Mesozoic age.
		Another way to depict the geology of a region is by using a vertical representation to indicate the relative and numerical ages of the rocks.
	www.geology.sdsu.edu /localgeology/sandiegogeology.htm (1038 words)

	Geology of Kent and the Boulonnais
		This conglomerate rests on steeply dipping shales and mudstones dated by acritarchs and chitinozoa to the late Llandovery or early Wenlock (Molyneux, 1991).
		Red and green mottled sandstones, conglomerates and siltstones of Old Red Sandstone facies were proved beneath Carboniferous Limestone in the Harmansole borehole [TR 142 529], just to the west of the coalfield and also in three boreholes near Chislet at the northern limit of the coalfield (Holmes, 1981).
		At Wissant, a conglomerate of remanié bulliensis Subzone (mammillatum Superzone) phosphatised nodules (P2) with ammonites at the top of the Formation des Gardes is overlain directly by sediments with spathi Subzone phosphatised ammonites at the base.
	www.geologyshop.co.uk /geolkb.htm (14969 words)

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