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Topic: Glacial till

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	Till article - Till sediments glacial clays sand gravel boulders gumbo terminal - What-Means.com (Site not responding. Last check: 2007-10-20)
		As a glacier melts, especially a continental glacier large amounts of till are deposits by the rivers flowing from the glacier and in any lakes which may form.
		Till may contain alluvial deposits of gems or other valuable ore picked up by the glacier during its advance, for example the diamonds found in Wisconsin and Indiana.
		Till is also a first name in the German language, related to the medieval name Theoderich (via Dietrich, for which Tillmann is as diminuitiv and/or regional form -- which then sometimes is shortened to Till), and in the Friesian language, as a short form of medieval names beginning with Uiet-.
	www.what-means.com /encyclopedia/Till (277 words)

	Glacial till -- Facts, Info, and Encyclopedia article (Site not responding. Last check: 2007-10-20)
		Glacial drift is a general term for the coarsely graded and extremely heterogeneous (Matter deposited by some natural process) sediments of (Click link for more info and facts about glacial) glacial origin.
		A particularly sticky form of clay till is called (Long mucilaginous green pods; may be simmered or sauteed but used especially in soups and stews) gumbo.
		Till is deposited at the (Click link for more info and facts about terminal moraine) terminal moraine and along the (Click link for more info and facts about lateral moraines) lateral moraines of a glacier.
	www.absoluteastronomy.com /encyclopedia/g/gl/glacial_till.htm (225 words)

	Till - Wikipedia, the free encyclopedia
		In cases where till has been indurated or lithified by subsequent burial into solid rock, it is known as the sedimentary rock tillite.
		Split up into sub glacial melt out till (melting of debris rich ice at the bottom of the glacier) and supraglacial melt-out till (melting of ice on the glacier surface).
		The reasons behind this are largely down to the difficulties in accurately classifying different tills, which are often classified based on inferences of the physical setting of the till rather than till fabric or particle size analysis data.
	en.wikipedia.org /wiki/Till (505 words)

	10(af) Landforms of Glaciation
		Till is a heterogeneous combination of unstratified sediments ranging in size from large boulders to minute particles of clay.
		A till plain is a large, relatively flat plain of till that forms when a sheet of ice becomes detached from the main body of the glacier and melts in place.
		Glacial erratics are large pieces of rock that have been transported away from their source areas by moving glacial ice sheets.
	www.physicalgeography.net /fundamentals/10af.html (1830 words)

	CT DEP: Metadata for Surficial Materials
		Till, the most widespread glacial deposit, was laid down directly by glacier ice and is characterized by a nonsorted matrix of sand, silt, and clay with variable amounts of stones and large boulders.
		Glacial meltwater deposits are concentrated in both small and large valleys and were laid down by glacial meltwater in streams and lakes in front of the retreating ice margin during deglaciation.
		Glacial meltwater deposits that average 10-40 feet in thickness overlie the till in small upland valleys and commonly in north-sloping pockets between bedrock hills.
	dep.state.ct.us /gis/dataguides/usgs/layers/metadata/surfmat.htm (4571 words)

	HYDROLOGY OF PRAIRIE POTHOLES IN NORTH DAKOTA - C
		Because the water table in the glacial deposits is continuous with the water surface in prairie potholes, the water-table gradient is adjusted to the water-surface elevation of the potholes.
		Glacial drift west of the Coteau du Missouri consists mainly of thin ground moraine that is discontinuous and patchy near the Missouri River.
		Glacial till on the Coteau du Missouri, which is very stony, consists largely of limestone, dolomite, quartzite, granite, and gneiss.
	www.lib.ndsu.nodak.edu /govdocs/text/potholes/585c.html (10796 words)

	Glacial Geology glossary
		Plucking: A process of glacial erosion by which blocks of rock are loosened, detached, and borne away from bedrock by the freezing of water in fissures.
		Till: (or "glacial till"): Deposits of a glacier - usually described as massive (not layered), poorly-sorted, and composed of multiple types of angular to sub-rounded rocks, but varying greatly with source material.
		Valley Glacier: A subtype of alpine glacier or mountain glacier which is longer than it is wide, and flows along the floor of a mountain valley.
	www.homepage.montana.edu /~geol445/hyperglac/glossary.htm (2573 words)

	Geology and Mineral Resources
		The stones in the brook bed to the left of the mattock head are glacially transported pebbles and cobbles which are actually part of the glacial till.
		Glacial striations are caused by the larger stones, which gouge out grooves as they are scraped over the rock by the moving ice.
		After the retreat of the glacier, this particular surface was protected by a covering of glacial till, which was removed when the highway was constructed.
	www.anr.state.vt.us /dec/geo/stjedu2.htm (2121 words)

	Geologic History and Geomorphology - GIS - Otter Tail County Minnesota
		The geomorphic landforms in Otter Tail County are drumlin fields, stagnation moraines, till plains, pitted outwash plains, kame moraines, and glacial lake plains (Hobbs and Goebel, 1982).
		The Altamont Moraine in Otter Tail County is the portion of the Alexandria Moraine that was overridden by the Des Moines Lobe glacial drift.
		The Henning Till Plain was formed behind the advancing front of the glacial ice of the Wadena or Winnipeg Lobe and the Des Moines Lobe.
	www.co.otter-tail.mn.us /gis/soilsurvey07geologic.php (1228 words)

	ES 331/767 Lecture 17
		The lower till was deposited by ice advances from the northeast, whereas the upper till was laid down by ice movement from the northwest.
		Nearly all glacial deposits and erratics visible at the surface in northeastern Kansas are related to this glaciation.
		Glacial striations and shallow grooves beautifully preserved on surface of lichen-covered quartzite boulder, Wabaunsee County.
	academic.emporia.edu /aberjame/ice/lec17/lec17.htm (2705 words)

	ES 331/767 Lecture 4
		Deposition of till must postdate erosion or deformation of the underlying substratum; most till was probably deposited late in the glacial cycle; the law of superposition applies to till as well as to other glacial sediment.
		Till is a mixture of anything and everything over which the ice moved, including: bedrock, older till and sediment, weathered material, soil, plant fragments, and animal remains.
		Till is dominated at any spot by material of local origin; the content of local material generally decreases upward in a till sequence.
	academic.emporia.edu /aberjame/ice/lec04/lec4.htm (1316 words)

	Search Tuna Report for glacial till (Site not responding. Last check: 2007-10-20)
		Description: Glacial till Glacial till with tufts of grass Glacial drift is a general term for the coarsely graded and extremely heterogeneous sediments of....
		Till -unsorted and unstratified sediment that is deposited by the glacier, usually an assortment of rock types, crushed and broken and therefore angular...
		Surficial sediments are comprised mainly of loamy textured glacial till, although clayey sediments, derived from erosion of the surrounding uplands during deglaciation, occur sporadically in the southern regions....
	www.searchtuna.com /ftlive2/990.html (1880 words)

	IRRS
		The reason that this top surface is called glacial till is because it is composed of rock and mineral particles that have been mixed together and deposited by large glaciers that covered most of this region millions of years ago.
		The till is sediment that is deposited along the edges, the front, and the back of a glacier, which over time leads to the creation of landforms and deposits.
		Another example would be when till is deposited at the rear of a glacier it forms a type of plain called a till plain or a ground moraine.
	www.southwest.msus.edu /regional/teaching/IRRS/Geologisttext.htm (899 words)

	Aaron Lodgement Till (Site not responding. Last check: 2007-10-20)
		A lodgement till is a glacial sediment deposited by plastering of debris from the sole of a glacier by pressure melting or other mechanical processes.
		An unknown section of exposed glacial till was studied in a creek bed in Anderson Township.
		To determine the nature of a glacial till, a detailed study of the till is necessary.
	tvl1.geo.uc.edu /ice/projects/lab99/HW699/Aaron/Aaron.html (963 words)

	[No title]
		Glacial till is unsorted and stratified material depostied beneath and within glacial ice done by the ice itself.
		Glacial outwash is sediment deposited by glacial meltwater consisting of stratified layers of sand and gravel sized particles.
		Glacial lacustrine is a fine textured sediment depostied in a glacial lake during glacial recession.
	www.earlham.edu /~jaffebe/webs/massoil.htm (1252 words)

	Glaciers (Site not responding. Last check: 2007-10-20)
		A glacier is defined as a body of ice that flows under its own mass due to gravity.
		Glaciers are powerful enough to transport vast quantities of sediment of all sizes, though there is differential erosion and sedimentation through the glacier profile.
		Evidence from the Illinoian and Wisconsinan glacial periods are easier to interpret than older ones because sediment deposits are directly accessible on the glacially shaped landscape.
	jove.geol.niu.edu /faculty/fischer/429_info/429trips/NIF/Glaciers.htm (3107 words)

	USGS - Direct Recharge
		The till is underlain, in part, by glacial outwash deposits that make up the principal aquifers in the region.
		Although an important component of recharge to the aquifers is direct percolation of precipitation through the till, there are no reliable estimates of the magnitude of this component, and little is known about the lateral and vertical movement of moisture-and possible contaminants-through the till.
		To provide a better understanding of the quantity and movement of water in glacial till, the USGS is investigating the amount of precipitation that percolates directly through surficial glacial till to underlying aquifers and describing the generalized flow paths through the till.
	wa.water.usgs.gov /projects/directrecharge (214 words)

	Glacial Deposits
		An indicator boulder is a glacial erratic of known origin used to locate the source area and the transport distance of any given glacial till.
		A lateral moraine is the debris from erosion and avalanches along the edges of a glacier.
		Glacial till is nonstratified material deposited directly by glacial ice.
	www.innvista.com /science/earth/geology/glacial.htm (445 words)

	Glossary (Site not responding. Last check: 2007-10-20)
		Drumlin – a low, smoothly rounded hill of compact glacial till, built under the margin of the ice and shaped by its flow.
		Kame – a mound, knob or ridge composed of stratified sand and gravel deposited by a subglacial stream as a fan or delta at the margin of a glacier, by a superglacial stream, or as a ponded deposit on the surface or margin of stagnant ice.
		Kettle – a depression in glacial drift, formed by the melting of a detached block of stagnant ice that was buried in the drift.
	jove.geol.niu.edu /faculty/fischer/429_info/429trips/NIF/Glossary.html (356 words)

	Ground Water: The determination of glacial till specific storage in North Dakota. (aquifers)@ HighBeam Research (Site not responding. Last check: 2007-10-20)
		Ground Water: The determination of glacial till specific storage in North Dakota.
		The determination of glacial till specific storage in North Dakota.
		A large comprehensive data set is used to derive the specific laboratory-determined storage Ss of till covering a wide area in the state.
	www.highbeam.com /library/doc0.asp?DOCID=1G1:20990302&refid=ip_encyclopedia_hf (191 words)

	Glacial Moraine (Site not responding. Last check: 2007-10-20)
		Glacial moraine consists of soils formed over sandy glacial till and generally of the steeper soils formed over water-sorted sand and gravel.
		Among the differences between the till and outwash is the amount of fines in the soil.
		Many of the soils that formed over the glacial till are good sources of topsoil because of their large content of silt.
	www.chipr.sunysb.edu /eserc/longis/moraine.html (374 words)

	N:\MATHEM\WAITOINT\nodaway\html\geology\280getxt.htm (Site not responding. Last check: 2007-10-20)
		Most basin soils are formed from glacial till (a mixture of clay, rock, gravel and sand), alluvium (water deposited soil), and a windblown silt called loess.
		The depth of the till is highly variable, but it generally ranges between 200 and 400 feet, obscuring most of the bedrock in the region.
		Glacial soil occurs on steeper, eroding slopes and it is a less productive brown loam or gritty silt loam.
	www.conservation.state.mo.us /fish/watershed/nodaway/geology/280getxt.htm (708 words)

	Surficial Materials Broad Brook
		Till, the most widespread glacial deposit, was laid down directly by glacier ice and is characterized by a non-sorted matrix of sand, silt, and clay with variable amounts of stones and large boulders.
		Till is thickest in drumlins and on the northwest slopes of hills.
		most extensive till and is commonly observed in surface exposures, especially in areas where till thickness is less than 15 ft; it is described in the thin till unit description below.
	magic.lib.uconn.edu /metadata/37811/surf.37811.0023.1992.s24.ctdep.1.md.htm (3216 words)

	GEO 100 Glacial Geology
		U-shaped valleys are characteristic of glacial widening and deeping of pre-existing V-shaped river valleys.
		Glacial deposits, because they are derived from a very large area eroded by the glacier, contain the widest variety of different rock types.
		Glacial tills are poorly sorted and unstratified or crudely stratified.
	www.oswego.edu /~gabel/QGlac.html (778 words)

	Enhanced Electrokinetic Remediation of Heavy Metals in Glacial Till Soils using Different Electrolyte Solutions (Site not responding. Last check: 2007-10-20)
		Previous electrokinetic remediation studies involving the geochemical characterization of heavy metals in high acid buffering soils, such as glacial till soil, revealed significant hexavalent chromium migration towards the anode.
		Tests were conducted on a glacial till soil that was spiked with Cr(VI), Ni(II), and Cd(II) in concentrations of 1,000, 500, and 250 mg/kg, respectively, under the application of a 1.0 VDC/cm voltage gradient.
		Compared to low buffering capacity soils, such as kaolin, the removal of heavy metals from the glacial till soil was low, and this was attributed to the more complex composition of glacial till.
	www.pubs.asce.org /WWWdisplay.cgi?0406748 (353 words)

	MICROMORPHOLOGY OF SEASONALLY SATURATED SOILS IN CARBONIFEROUS GLACIAL TILL (Site not responding. Last check: 2007-10-20)
		Soils formed in dark-colored glacial till (chroma 3, value < 4) are common in southern New England.
		The low chroma, low-value colors reflect the carboniferous nature of the sedimentary and metasedimentary rocks that compose the till.
		Much of this till is very dense, resulting in soils with seasonal high water tables.
	nesoil.com /images/soilabstract.htm (299 words)

	Igneous errosion vs Glacial till
		The area I'm thinking about prospecting is a combination of pluton and glacial till in easter Ontario.
		There have been several gold mines in the area over the last 130 years or so, but the geology is very inconsistent, as a result there are very few concentrated veins, the gold is sort of mixed up everywhere, though mostly at the surface.
		So my first question is, would you be more inclined to prospect areas of glacial till, or areas of errosion at the bottom of creeks and streams running through faults/cracks in the pluton.
	www.treasurenet.com /f/index.php?topic=8493.0 (501 words)

	Read about Glacial till plains at WorldVillage Encyclopedia. Research Glacial till plains and learn about Glacial till ... (Site not responding. Last check: 2007-10-20)
		Read about Glacial till plains at WorldVillage Encyclopedia.
		The Glacial till plains are in the Northwest of Ohio.
		This region is fertile and has gently rolling moraine hills created by the movement of
	encyclopedia.worldvillage.com /s/b/Glacial_till_plains (79 words)

	Glacial Till Outcrop (Site not responding. Last check: 2007-10-20)
		This photo is an outcrop of a glacial till deposit.
		Glacial till is a heterogeneous mixture of clay to boulder size particles deposited within or beneath glacial ice.
		The till type on this photo is a dense or basal till with lenses of looser, sandy material (sandy till), the soil type mapped in this area is the Montauk series (the solum has been removed on this photo).
	nesoil.com /images/tillcut.htm (76 words)

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