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Topic: Siltstone

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Malin Head

Mudstone

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Sandstone

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	Geology - Van Zijl Guesthouses at Nieuwoudtville
		The lower stage consists of siltstone, mudstone, and shale with interbedded bands of sandstone, grit and conglomerate.
		The middle stage is made up mainly of shale, mudstone and siltstone with interbedded bands of sandstone and greywacke.
		Lenticular bands of sandstone, shale and siltstone are found on all horizons.
	www.nieuwoudtville.co.za /information19.html (971 words)

	Dakota--OFR 91-1a--Appendix 3
		The coarsening-upward sandstones and interlaminated siltstones and sandstones are crevasse splay and bay fill sediments, respectively, that were deposited in an interdistributary bay environment; the lignites are from accumulations of plant material in swamps or boggy areas and represent the final filling of an interdistributary bay.
		Siderite nodules are abundant in the unmottled gray siltstones.
		The gray siltstones were deposited during periods of nonmarine deposition on a natural levee or coastal plain adjacent to the shoreline.
	www.kgs.ku.edu /Dakota/vol3/ofr91_1a/appen3.htm (2795 words)

	Siltstone - Wikipedia, the free encyclopedia
		Siltstone is a geological term for a sedimentary rock whose composition is intermediate in grain size between the coarser sandstone and the finer mudstone.
		As its name implies, it is primarily composed of silt, defined as grains smaller than 62 micrometres.
		Siltstones are important geological elements in certain stratigraphic series, such as in Muldraugh Hill in Kentucky.
	en.wikipedia.org /wiki/Siltstone (169 words)

	Smalley's Landtype Classifications
		Bedrock-Sandstone, conglomerate, sandstone interbedded with thin strata of siltstone and shale, interbedded shale and sandstone, and siltstone interbedded with sandstone and silty shale.
		Bedrock-Sandstone, conglomerate, sandstone inter bedded with thin strata of siltstone and shale, inter bedded shale and sandstone, and siltstone interbedded with sandstone and silty shale.
		Occupies the gently sloping to vand steep upper one-third to one-half of southerly slop that extend from the Plateau escarpment to the adjacent limestone valleys.
	www.sewanee.edu /Forestry_Geology/OFM_Page/smalley.htm (4762 words)

	KGS--Tonganoxie Sandstone--Lithology, Origin, Environment
		The constituents of the conglomerate unit are: (1) pebbles of limestone, siltstone, and claystone; (2) reworked invertebrate fossils; (3) plant fragments; (4) quartz sand and silt; and (5) limonite, clay calcite, and siderite cement.
		The siltstone pebbles, together with the compressed claystone pebbles, are identical in color and lithology to the associated siltstone and shale of the Tonganoxie sandstone.
		As shown in Figure 2, the festooned cross-bedded and massive-bedded siltstones and sandstones occur in the lower and central parts of the valley where the sandstone unit is thickest and grade laterally and upward into the thin-bedded sandstone type which characterizes the margins of the valley (Fig.
	www.kgs.ku.edu /Publications/Bulletins/86_5/04_lith.html (5802 words)

	CT DEP: Geology of Penwood State Park
		Siltstone is thinly bedded (breaks in thin layers) and here is red in color because of the iron cementing the grains together.
		The flatness of the area suggests a softer rock supports the area than the basalt in the higher area to the east and the steep drop to the west.
		According to the geologic map of the Avon Quadrangle, which covers this area, this should be in the middle of the Holyoke Basalt, with the Shuttle Meadow siltstone to the west and the East Berlin siltstone to the east.
	dep.state.ct.us /stateparks/geology/penwoodgeo.htm (745 words)

	PP - Permian and Pennsylvanian Sedimentary Rocks (Site not responding. Last check: 2007-10-26)
		Upper unit sandstone with intercalated siltstone and some limestone, lower unit siltstone with some shaley mudstone and intercalated limestone conglomerate, limestone, and sandstone.
		Sandstone, siltstone, and mudstone, fine-grained, pale- to dark-reddish-brown, thin- to thick-bedded, cross-laminated.
		Mainly siltstone and sandstone, fine-grained, red to gray; contains reddish sandy shale and chert breccia at the base; includes interbeds of gray to pink arenaceous limestone.
	www.verde.org /usgs/pp.html (211 words)

	LITHOSTRATIGRAPHY
		The sandstones and siltstones were derived from a continental area that included metamorphic rocks (e.g., mica schists and quartzite), such as those exposed in Newfoundland and adjacent areas of the Atlantic continental margin (Bell and Howie, 1990).
		The sandstones and siltstones are pervasively cemented by carbonate microspar and spar.
		The siltstone and sandstone layers show parallel and cross lamination, which, it is suggested in the site report for Site 398, records "geostrophic flow." In contrast, Maldonado (1979) estimates that 30%-40% of the interval is turbidites, the bulk of which are nannofossil-rich mudrocks.
	www-odp.tamu.edu /publications/210_IR/chap_03/c3_3a.htm (12584 words)

	MFA - CAMEO - Material Description
		Siltstone grains usually measure 0.01 - 0.05 millimeters (Aston et al 2000).
		The color of siltstone ranges from dark gray to greenish gray.
		Siltstone does not have the pronounced layering of shale and schist.
	www.mfa.org /_cameo/frontend/fullrecord.asp?name=siltstone (87 words)

	Siltstone
		It feels very gritty, like a very fine sandstone, or fine sandpaper, yet under the microscope it is difficult or impossible to distinguish the individual grains.
		As a practical matter, if the rock is distinctly gritty feeling, but under a handlens or a general laboratory microscope you cannot see the individual particles (they all seem to run together), then the rock is a siltstone.
		Coarse silt is capable of forming cross laminations in a current, while the finer-end particles generally deposit from suspension.
	csmres.jmu.edu /geollab/Fichter/SedRx/Rocks/Silt1.html (256 words)

	Siltstone: Sedimentary rocks (Site not responding. Last check: 2007-10-26)
		As a practical matter, if the rock is distinctly gritty feeling, but under a handlens or a general laboratory microscope you cannot see the individual particles (they all seem to run together), then the rock is a siltstone.
		Siltstone is a product of semi-quiet depositional environments.
		Coarse silt is capable of forming cross laminations in a current, while the finer-end particles generally deposit from suspension.
	freespace.virgin.net /craven.pendle/rocks/sedimentary/siltstone.htm (140 words)

	Geologic Maps of Maryland:
		Red and green shale, siltstone, and sandstone, with thin lenticular beds of argillaceous limestone and thin beds of impure coal; thick-bedded, white conglomeratic sandstone at base; thickness greater than 200 feet; occurs only on hilltops in center of Georges Creek Basin.
		Interbedded sandstone, siltstone, claystone, shale, and coal beds; conglomeratic orthoquartzite and protoquartzite at base; thickness 60 feet in northeast, increases to 440 feet in southwest.
		Red to greenish-gray, thin- to thick-bedded siltstone, shale, subgraywacke, and protoquartzite; interbedded conglomerate; thickness 180 feet in east, increases to 500 feet in west.
	www.mgs.md.gov /esic/geo/lgdalleg.html (1229 words)

	Bakken 1995: Eastern Region
		Siltstone is especially abundant in the Eastern Resource Region, both as a raw material and at archaeological sites (Romano 1991).
		With some reluctance I suggest that it is better to reserve the term "Knife Lake Siltstone" for siltstone that can be demonstrated to originate from the Knife Lake sources, at least until more is known about the material.
		The siltstone was used to produce a variety of tools, including a stemmed point, other bifaces, keeled scrapers, blades and chipped stone adzes.
	www.tc.umn.edu /~bakk0029/MinnLith/4.East.HTML (2125 words)

	Silt and Siltstone
		This rock may be found as thin slabby beds in many of the Pennsylvanian formations of eastern Kansas.
		Many siltstones contain layers rich in tiny flakes of mica which glitter in the sun.
		The mica is concentrated along the bedding planes where the rocks break easily.
	people.ku.edu /~stalder/KS-loess.html (318 words)

	Paper
		The basic description of a Silicified Siltstone Blade (SSB) is a secondary flake, twice as long as it is wide, that is roughly rectangular or ovate in form and exhibits a triangular shaped, or prismatic profile.
		Silicified siltstone is a clastic sedimentary rock that is characterized by a homogenous structure dense in silica and forms in quiet lake bed environments where minute particles are able to settle out into discreet layers (American Geological Institute 1976).
		One of the important characteristics of siltstone, although not as common as with shale, is the property of fissility, or the ability to separate into bedding planes (American Geological Institute 1976).
	www.ssblade.com (1627 words)

	Palaeontology - Late Devonian fauna from the Hunter Siltstone near Grenfell, New South Wales
		Late Devonian fauna from the Hunter Siltstone near Grenfell, New South Wales
		The Grenfell fauna, from the Hunter Siltstone near the town of Grenfell, New South Wales represents the youngest Devonian locality in New South Wales, and includes a wide variety of placoderm, acanthodian and sarcopterygian fishes.
		The fishes preserved in this fauna are largely disarticulated so that the material recovered is separate placoderm plates, bones, scales toothplates, etc. This represents a very different mode of preservation than seen in the Canowindra fauna, signalling transport after death in moving water, perhaps a river or stream.
	www.austmus.gov.au /palaeontology/field_sites/grenfell.htm (556 words)

	[No title] (Site not responding. Last check: 2007-10-26)
		During analysis, Bradley noted a distinctive silicified siltstone as the dominant material in an outside flaking area adjacent to the excavated house at Krasnyi Yar.
		It was clear from the deposits of dark red siltstone that we had found where the road material had been obtained.
		Two of the siltstone blades from Zhusahn are red, one is gray, and one is green.
	www.primtech.net /Zhartas/Report.htm (1806 words)

	Jefferson County
		The Siltstone Trail traverses the knob country of southern Jefferson County and climbs to some of the highest points in the area.
		The Siltstone Loop is essentially a continuation of the Siltstone Trail and starts at its western end.
		From the parking area at the western end of the Siltstone Trail go through the cow sifter next to the gate, and follow the posts with red blazes, up the hill to the trail.
	www.iglou.com /mooseland/jefferso.htm (445 words)

	NMBGMR Staff - Peter Scholle - Guadalupe Mountains (Site not responding. Last check: 2007-10-26)
		Clastic terrigenous sandstones and siltstones, transported from the shelves either through penecontemporaneous channels in the reef or during episodic events of sea level lowering, provide greater than 90 percent of the fill.
		These strata consist of subarkosic, very fine-grained sandstones and coarse siltstones which are compositionally very similar to the thin clastic terrigenous units found on the shelf.
		The fractured siltstone Spraberry reservoir of the Midland basin has a very low recovery factor, although the volume of oil in-place is the largest of any single Permian pool.
	geoinfo.nmt.edu /staff/scholle/guadalupe.html (11226 words)

	Official Series Description - GILPIN Series (Site not responding. Last check: 2007-10-26)
		Rock fragments are mostly angular to subangular channers of shale, siltstone and sandstone and comprise 5 to 40 percent of individual horizons of the solum and 30 to 90 percent of the C horizon.
		The R horizon is horizontal interbedded shale, siltstone or fine grained sandstone.
		The climate is humid temperate with an average annual rainfall of 36 to 50 inches, average annual air temperatures of 46 to 57 degrees F., and a growing season of 120 to 180 days.
	ortho.ftw.nrcs.usda.gov /osd/dat/G/GILPIN.html (1115 words)

	australian sandstone (Site not responding. Last check: 2007-10-26)
		"Eidsvold Siltstone" is a mixture of sandstone, siltstone and mudstone, white coloured with streaks of limonite through it.
		The Siltstone was formed during the Mesozoic era, comprising three distinct periods, the Triassic, Jurassic and Cretaceous.
		The Mesozoic era was characterised by the development of mammals, flying reptiles, birds and flowering plants, the appearance and death of the dinosaurs and the age of reptiles.
	www.eidsvoldsiltstone.com /main.htm (119 words)

	Del Puerto
		A near-shore,shallow water, light brown to dark gray, thinly bedded siltstone and claystone of the Moreno Formation, containing wood fragments, plant fossils and microfossils.
		Load cast and load waves, sedimentary structures typical to turbidities are common in the sandstone and siltstone of the Panoche Formation along Del Puerto Canyon Road.
		A variety of ore deposits such as manganese, mercury, chromite, and magnesite have been mined during the past 80 years in the Del Puerto Canyon area.Photograph shows a prospect hole drilled in Ophiolite and Franciscan graywacke for magnesite and probably chromite.
	geology.csustan.edu /fieldtrips/delpuerto (405 words)

	Official Series Description - ALSUP Series
		The Alsup series consists of deep, moderately well drained, moderately slowly permeable soils formed in a mantle of colluvium or loess and the underlying residuum from shale or interbedded shale, siltstone, and limestone.
		Siltstone channers range from 0 to 80 percent by volume.
		Siltstone and chert fragments are commonly a part of the colluvium.
	ortho.ftw.nrcs.usda.gov /osd/dat/A/ALSUP.html (1200 words)

	Groundwater Resources of Lincoln County, Kentucky
		The lower part of the formation is composed of siltstone and argillaceous limestone.
		A minor spring horizon occurs at the contact of the limestone with the underlying siltstone or argillaceous limestone.
		Water from shale is soft, from the siltstone, hard, and from the limestone, very hard.
	www.uky.edu /KGS/water/library/gwatlas/Lincoln/GWavailability.htm (1520 words)

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	www.altrec.com /shop/detail/24693 (306 words)

	siltstone - OneLook Dictionary Search
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		siltstone : Compact Oxford English Dictionary [home, info]
		siltstone : The American Heritage® Dictionary of the English Language [home, info]
	www.onelook.com /?w=siltstone (126 words)

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