
	Where results make sense

Topic: Dolostone

Related Topics

Sedimentary rock

Karst topography

Felsic

Metamorphism

Karst

Marble

Fluorite

Sandstone

Granite

Aquifer

Niagara Escarpment

Ivanovo

Rhaetian languages

Ladino language

Ivanovo, Russia

In the News (Tue 7 Oct 08)

Breast Cancer

Golden Circle

Keating Five

Stephen Harper

Eli Lilly

Nobel Prize

Eli Manning

Josh Beckett

Sage Rosenfels

South Ossetia

	Dolostone - Wikipedia, the free encyclopedia
		Dolostone is a sedimentary carbonate rock that contains a high percentage of the mineral dolomite.
		The usage of the term dolostone is controversial because the word dolomite was first applied to the rock during the late eighteenth century and thus has technical precedence.
		The use of the term dolostone is not recommended by the Glossary of Geology published by the American Geological Institute (AGI).
	en.wikipedia.org /wiki/Dolostone (213 words)

	Dolostone, Rocks and Minerals, Kentucky Geological Survey
		Dolostone is a sedimentary rock composed chiefly of the mineral dolomite, which is magnesium calcium carbonate.
		Dolostones often exhibit a sugary (saccharoidal) texture and commonly weather to a buff or brown color caused by iron carbonate in the rock.
		Dolostone is used as a building and ornamental stone; for road aggregate, and as agricultural lime; in the making of rock wool; as a flux in the production of pig iron in the blast furnace; for the making of natural cement; and in the manufacture of magnesium and dolomite refractories.
	www.uky.edu /KGS/rocksmn/dolostone.htm (288 words)

	Limestone & Dolostone
		Dolostone is quite similar to limestone, but is composed mostly of the mineral dolomite (CaMg(CO Both are sedimentary rocks that occur as thin to massive beds of fine- to coarse-grained rock.
		Dolostone forms when magnesium in pore water is substituted for some of the calcium in the original limestone, or by direct precipitation.
		All of the dolostone and most of the limestone in Arkansas are Paleozoic in age and are present in the Ozark region.
	www.state.ar.us /agc/limeston.htm (793 words)

	Point Ann South
		Dolostone, occurs as a ledge former, generally seen as 3-4 distinct beds, but laterally may appear as one bed with prominent joints.
		Dolostone, lower 32 cm is intraclast conglomerate, vf-m sandy; upper 88 cm is vf-m sandy peloidal dolograinstone.
		Dolostone, stromatolite boundstone, f xtln, non-sandy, wavy mat in lower part grading upward to small (2-4 cm across) LLH with 1-2 cm relief; wavy to low-relief mounded upper surface.
	www.igsb.uiowa.edu /gsi/gb70/point_ann_south.htm (1792 words)

	GemRocks: Marble, Limestone, Dolostone
		Dolostone is used in this document as part of my mission to discontinue the dual application of the mineral name to both the mineral and the rock.
		Dolomite (regrettably not Dolostone) : For a given unit, the ellipsis is replaced by a geographic name, and the resulting binomial designation is the accepted stratigraphic unit designation (see Appendix B, Glossary), which is used in geological reports and on geological maps.
		The origin of the term limestone is quite apparent; that of dolostone is based on its consisting largely or wholly of the mineral dolomite, which was named in late 18th century for the French geologist and mineralogist M. Déodat de Dolomieu.
	www.cst.cmich.edu /users/dietr1rv/marble.htm (2771 words)

	Dolostone (Site not responding. Last check: 2007-10-29)
		Dolostone is a sedimentary rock in the class known as chemical sedimentary rocks.
		The main constituent is the mineral dolomite, CaMg(CO The main pathway to the formation of dolostone is thought to be the replacement of some of the calcium in limestone with magnesium.
		Dolostone deposits are mainly ancient rocks, giving time for the replacement process in limestone.
	hyperphysics.phy-astr.gsu.edu /hbase/geophys/dolostone.html (73 words)

	Dolostone
		As with limestone, much of the dolostone that is found in Ohio today occurs in the western half of the state.
		Dolostone was formed in warm, clear, shallow seas during the Paleozoic Era.
		A kind of dolostone known as "Springfield Dolomite" from Clark County was used by builders for part of the eterior walls of Orton Hall on the campus of The Ohio State University in Columbus.
	www.ohiohistorycentral.org /entry.php?rec=1382 (290 words)

	Dolomite - Wikipedia, the free encyclopedia
		Dolomite is the name of both a carbonate rock and a mineral consisting of calcium magnesium carbonate (formula: CaMg(CO) found in crystals.
		Dolomite rock (also dolostone) is composed predominantly of the mineral dolomite.
		Limestone which is partially replaced by dolomite is referred to as dolomitic limestone, or in old U.S. geologic literature as magnesian limestone.
	en.wikipedia.org /wiki/Dolomite (1007 words)

	Neighborhood Rocks: Dolostone
		Dolostone is one of the most common rocks in our neighborhood.
		Dolostone is made mostly of the mineral, dolomite.
		Dolostone is sometimes classified as a chemical sedimentary rock, because it usually forms when limestone is chemically changed.
	www.saltthesandbox.org /rocks/dolostone.htm (631 words)

	Jerry Lucia, Origin and Petrophysics of Dolostone Pore Space
		There is no relationship between porosity and permeability in dolostone, however, and dolomite crystal size and the precursor fabric are key elements in predicting the permeability of dolostones.
		Instead dolostone porosity is (1) inherited from the precursor limestone and (2) occluded by the process of overdolomitization.
		The explanation for this observation is that the limestones have lost porosity through compaction and cementation, whereas dolostones resisted compaction and retained much of their porosity.
	www.beg.utexas.edu /news-events/news-archive/lucia-12-02.htm (461 words)

	Illinois Geology Gallery
		One practical way to tell limestone apart from dolostone is to put a drop of diluted hydrochloric (muriatic) acid on the rock sample in question.
		When the Vermilion River is low, the outcropping Ordovician dolostone on the west side of the anticlinorium is clearly visible outcropping in the stream bed.
		Relatively thick layers of dolostone alternate with thinner layers of crumbly shale.
	raymondwiggers.homestead.com /Illinois_Geology_Gallery~ns4.html (4480 words)

	History and Lore of Alibates Flint by Wes Phillips
		Due to downwarping of the sediments along faults and to salt dissolution in the subsurface, the dolostone does not form a continuous bed through the area, but comes and goes as it sinks to the level of the creek beds, or remains as the caprock along the river.
		The upper dolostone unit is the lesser in thickness, often being only about two feet thick and may be absent at some localities.
		The origin of both the dolostone and the chert are somewhat problematic in that both dolomite and chert are often replacement products in an original limestone bed.
	www.panhandlenation.com /explore/alibates2.htm (2562 words)

	MohawkCrystals
		These diamond mines are not “holes in the ground” in the classic sense; they’re stone quarries or “walls” of dolostone where certain layers of this sedimentary rock contain pockets or “vugs”.
		Even when dolostone formations were exposed in other areas of the valley during the construction of railroads in the mid 1800s, few people took the time to collect or even consider a market for them.
		Except for the dolostone, diamonds and digging tools used by miners—and the hedgerow between them—these operations are as different as night and day.
	www.paulkeeslerbooks.com /MohawkCrystals.html (1481 words)

	B 2143 Part I
		The chemical composition of essentially unmineralized dolostone marble (table 3) is an essential parameter for evaluation of a syngenetic versus epigenetic origin of the disseminated REE ores of Bayan Obo.
		Disseminated bastnaesite from dolostone marble sample 85-10,21-4 (table 14), with an internal isochron mineral age of 475+-8 Ma, is chemically characterized by a moderate La content (24.89 wt.
		Coarse-grained ferroan dolomite in H8 dolostone marble was strongly twinned and stretched, and prismatic alkali amphiboles crystallized parallel to the direction of carbonate stretching within and along foliation planes in the marble.
	pubs.usgs.gov /bul/b2143/part1.html (11966 words)

	Nature-Wise by Roy Lukes (Site not responding. Last check: 2007-10-29)
		The steep, sheer Niagara Escarpment of dolostone, with its incredible vertical forest of arborvitae trees, is an endangered natural resource that deserves the highest priority of protection from all people.
		A vertical forest of arborvitae trees (eastern white cedar) clings precariously to the dolostone, their roots grotesquely and with uncanny precision reaching for the thin cracks into which to grow.
		The newly-coined word, dolostone, is being preferred today by geologists because the majority of the Niagara Escarpment is made up of stone that is roughly 46% magnesium carbonate (dolomite) and 54% calcium carbonate (limestone).
	www.doorbell.net /lukes/a011003.htm (673 words)

	IBRI Research Report #16 - CORAL REEFS AND RELATED CARBONATE STRUCTURES AS INDICATORS OF GREAT AGE (Site not responding. Last check: 2007-10-29)
		Practically all of the layers of limestone and dolostone are of types which could have been formed only by the usual slow processes of limestone formation.
		The fact that the larger reefs became heavily dolomitized (changed to dolostone), as their burial progressed, is further evidence of the slow change to more saline (salty) water.
		Bebout found these remaining effects in the reef limestone and dolostone at numerous levels on the sides of the Rainbow reefs, and also in the reefs of nearby subbasins which are buried at similar depths.
	www.ibri.org /RRs/RR016/16coral.htm (8085 words)

	Dolostone-Hosted Gold-Rich Jasperoids and their Relationship to Copper Replacement Mantos, LS &A and Queen Creek ...
		Gold in these mines is found within quartz-iron oxide bodies (jasperoids) that replace a 7 m thick dolostone bed located at the base of a 600 m thick Paleozoic limestone sequence.
		The host rock is a fine- to medium-grained finely laminated dark gray dolostone, regionally known as the "fetid dolomite" of the Devonian Martin Formation.
		Small bodies and pods of talc-quartz-calcite and talc-tremolite-calcite replacing dolostone are locally found in the area, although their relationship with a given style of mineralization is not clear.
	pangea.stanford.edu /research/ODEX/willi-gsn.html (769 words)

	eLibrary Manuscript Preview Page
		If dolostone reservoirs are divided into petrophysical/mineralogical facies of similar depositional and diagenetic textures - and, thus, similar pore geometries and mineralogy - empirical equations that apply specifically to that geologically identified facies can be developed.
		Four general petrophysical/mineralogical facies characterize Permian shallow-water dolostone reservoirs: (1) subtidal, mud-dominated dolostone; (2) subtidal, grain-domi-nated dolostone; (3) dolomitic and siliciclastic peritidal rocks; and (4) diagenetically altered, subtidal dolostone.
		We describe herein methods of determining petrophysical properties in complex dolostone reservoirs by discussing the key rock properties of mineralogy and pore and pore-throat geometries that are a result of depositional and diagenetic textures.
	www.spe.org /elibinfo/eJournal_Papers/spe/2004/EREE/02/00087595/00087595.htm (775 words)

	Ozark Plateaus
		The lowest and northern-most plateau is the Salem Plateau and is generally underlain by dolostones, sandstones, and limestones of Ordovician age.
		Geology: The Cotter Dolomite is composed of dolostone of predominantly two types: a fine-grained, argillaceous, earthy textured, relatively soft, white to buff or gray dolostone called "cotton rock", and a more massive, medium-grained, gray dolostone that weathers to a somewhat hackly surface texture and becomes dark on exposure.
		Geology: The Joachim Dolomite is chiefly a fine-grained dolostone and dolomitic limestone with thin beds of shale.
	www.state.ar.us /agc/ozark.htm (4607 words)

	eLibrary Manuscript Preview Page
		If dolostone reservoirs are divided into petrophysical-mineralogical facies of similar depositional and diagenetic textures and, thus, similar pore geometries and mineralogy, empirical equations that apply specifically to that geologically identified petrophysical-mineralogical facies can be developed so that porosity and water saturation can be calculated accurately.
		The four general petrophysical-mineralogical facies that characterize Permian shallow-water dolostone reservoirs are (1) subtidal, muddominated dolostone; (2) subtidal, grain-dominated dolostone; (3) dolomitic and siliciclastic peritidal rocks; and (4) diagenetically altered, subtidal dolostone.
		The multiple pore types and associated pore-throat geometries and variations in siliciclastic and calcium-sulfate content, which are characteristic of complex dolostone reservoirs and a consequence of both depositional and diagenetic processes, require that petrophysical calculations from wireline logs be tailored to specific rock types.
	www.spe.org /elibinfo/eLibrary_Papers/spe/2002/02IOR/00075214/00075214.htm (532 words)

	little falls dolostone (Site not responding. Last check: 2007-10-29)
		The minerals of the Little Falls Dolostone are among the most famous in New York State.
		The Little Falls Dolostone is a rock of Cambrian age that formed at the bottom of a shallow sea about 495 million years ago.
		As the Little Falls Dolostone was slowly buried by new sediments, the temperature slowly rose from perhaps 20 degrees C to 175 degrees C or slightly higher.
	www.nysm.nysed.gov /nysam/littlefalls/lttlflls.htm (344 words)

	Trenton-Black River Outcrop Analogs AAPG 2003 Abstract (Site not responding. Last check: 2007-10-29)
		These dolostone bodies are spatially related to the Kentucky River Fault Zone, and the Jeptha Knob cryptoexplosive structure.
		The dolostone bodies are analogs to subsurface tectonic dolostone gas reservoirs in the equivalent Trenton and Black River Groups in New York.
		Two of the larger dolostone bodies will be cored to allow vertical trends in dolomite geochemistry to be documented.
	www.uky.edu /KGS/emsweb/abstract/trnt_aapg03.html (399 words)

	Summary of Citation
		Is mapped undivided with Simonson Dolostone in study area, Lincoln and White Pine Cos, NV in east-central part of Great Basin province.
		Is chiefly medium- to light-gray aphanitic dolostone in beds 3-5 ft thick.
		The name "dolostone" is used for rocks composed predominantly of the mineral "dolomite" on Figure 2 and throughout this chapter, although in the literature it has been common practice to use dolomite rather than dolostone in formal names of dolomitic formations and members.
	ngmdb.usgs.gov /Geolex/Refsmry/sumry_6177.html (812 words)

	NIagara County Rock Collection
		Under the shale, harder layers of limestone and dolostone are encountered.
		Lockport Dolomite (Dolostone) is one of the major sedimentary rocks found in this area.
		Here the Dolostone formation is about 75-feet high and was one of the most difficult challenges for builders of the canal.
	www.lockport-ny.com /Museum/rocks.htm (758 words)

Try your search on: Qwika (all wikis)