
	Where results make sense

Topic: Sedimentary

Related Topics

Igneous

Rock (geology)

Shale

Petrology

Metamorphism

Diagenesis

Brent Blend

List of rocks

List of stone

Limestone

Geology

Chalk

Petroleum

List of minerals

Crude oil

In the News (Tue 10 Nov 09)

Northern Trust

Marvin Harrison

Peter Chernin

Gary Locke

Match Play

Penelope Cruz

Mickey Rourke

AR Rahman

Danny Boyle

Hugh Jackman

	Sedimentary Rocks
		Sedimentary rocks are by far the most common of all rock types.
		Sedimentary rocks are formed from loose sediment; generally this sediment has come from rocks that have eroded from other rocks.
		Clastics are the most common of all sedimentary rocks, with shale accounting for 81 percent of all sedimentary rocks and sandstone for 11 percent.
	www.suite101.com /article.cfm/everyday_geology/65389 (458 words)

	Physical Geology - Sedimentary Rocks
		Describe the types of environments where sedimentary rocks are formed.
		Explain the significance of fossils in sedimentary rocks.
		By studying sedimentary rocks the geologist attempts to reconstruct the conditions under which the sediment was produced, transported and eventually deposited.
	www.uh.edu /~jbutler/physical/chapter7.html (524 words)

	Geoscience - The Earth - Shaping the Earth - Sedimentary processes and rocks
		Sedimentary rocks form by the breakdown (both physical and chemical) of pre-existing rocks (these may be of igneous, metamorphic or sedimentary origin).
		Sedimentary structures are very important as they provide us with information on the palaogeography and palaeoclimate of the areas in which they occur.
		Sedimentary environments can be classified according to the climate in which they occur and/or the geometrical arrangement of the sediments.
	www.amonline.net.au /geoscience/earth/sedimentary.htm (3868 words)

	Amateur Geologist Structured Geological Glossary: Sedimentary Rocks
		Term used to describe sedimentary or metamorphic rocks that tend to split into layer that are 1-10 cm thick.
		A detrital sedimentary rock composed of grain from 1/16 to 2 millimeters in diameter, dominated in most sandstone by quartz, feldspar, and rock fragments, bound together by a cement of silica, carbonate, or other mineral or a matrix of clay minerals.
		Clay originating in the soft sediment or sedimentary rock where it is identified and where it formed either by neoformation (i.e., from dissolved elements) or by transformation (i.e., from mineral growth on preexisting sedimentary substrate).
	www.amateurgeologist.com /content/glossary/rock/sedimentary.html (2021 words)

	Oilfield Glossary: Term 'sedimentary'
		Sedimentary rocks are formed at the Earth's surface through deposition of sediments derived from weathered rocks, biogenic activity or precipitation from solution.
		Clastic sedimentary rocks such as conglomerates, sandstones, siltstones and shales form as older rocks weather and erode, and their particles accumulate and lithify, or harden, as they are compacted and cemented.
		Sedimentary rocks can include a wide variety of minerals, but quartz, feldspar, calcite, dolomite and evaporite group and clay group minerals are most common because of their greater stability at the Earth's surface than many minerals that comprise igneous and metamorphic rocks.
	www.glossary.oilfield.slb.com /Display.cfm?Term=sedimentary (227 words)

	sedimentary - Search Results - MSN Encarta
		Sedimentary Rock, in geology, rock composed of geologically reworked materials, formed by the accumulation and consolidation of mineral and...
		A sedimentary basin has an area of at least 10,000 sq km (4000 sq mi).
		Most sedimentary basins form under oceans and are called marine basins.
	encarta.msn.com /sedimentary.html (126 words)

	Sedimentary rock - CreationWiki (Site not responding. Last check: 2007-11-02)
		Sedimentary rocks are composites of pre-existing rocks that have been weathered and eroded, or pieces of once-living organisms.
		Although sedimentary rocks can form today, it is believed by creation scientists that the majority of the Earth's strata was formed catastrophically during the Biblical flood of Noah.
		On the otherhand, uniformitarian geologists hold to the view that most sedimentary rocks were formed slowly and gradually at current rates of erosion and deposition.
	creationwiki.org /index.php?title=Sedimentary_rock (484 words)

	10(f) Characteristics of Sedimentary Rocks
		Most sedimentary rocks are formed by the lithification of weathered rock debris that has been physically transported and deposited.
		The classification of clastic sedimentary rocks is based on the particle types found in the rock.
		Several types of sedimentary rocks are formed from the lithification of once living organisms.
	www.physicalgeography.net /fundamentals/10f.html (489 words)

	Sedimentary Rocks
		Sedimentary rocks are those formed from the compaction and cementation of fragments of pre-existing rocks called clasts, or plant and animals remains.
		Sedimentary rocks are divided into two groups, clastic or detrital, and nonclastic or chemical.
		Sandstone is a common clastic sedimentary rock formed by the compaction and cementation of sand (quartz grains).
	www.uwsp.edu /geo/faculty/ritter/geog101/textbook/earth_materials_structure/sedimentary_rocks.html (632 words)

	Careers
		Sedimentary rocks are composed of bits and pieces of geological material derived from either pre-existing rock sources like mountains, or through chemical and biochemical processes in oceans and lakes (salt flats, reefs, etc.).
		Sedimentary geologists also examine the natural resources that are contained within sedimentary rock such as oil, natural gas, and a variety of economic products ranging from halite (salt) to limestone (for cement).
		Most sedimentary geologists are eager to talk to interested parties about their jobs and will usually provide you with advice about the future potential for jobs in your area.
	www.beloit.edu /~SEPM/careers.html (1539 words)

	College Geology Department, Physical Geology, sedimentary rock examples
		Illustrations and explanations to accompany the sedimentary rock lab.
		Examples of some clastic sedimentary rocks and their textures
		Shale is the most common sedimentary rock type on earth.
	www.union.edu /PUBLIC/GEODEPT/COURSES/geo-10/sediment.htm (507 words)

	Sedimentary Rocks
		Sedimentary rocks are divided into two broad classes, detrital sedimentary rocks and chemical sedimentary rocks as described below.
		Sedimentary rocks make up perhaps only five percent or so of the outer 16 kilometers (10 miles) of the Earth (Lutgens and Tarbuck), but the majority of surface rocks are sedimentary.
		The texture of sedimentary rocks is described as "clastic", meaning that they are composed of discrete particles that are compacted and cemented together.
	hyperphysics.phy-astr.gsu.edu /hbase/geophys/sedime.html (242 words)

	Sedimentary Rock Identification Exercise
		Sedimentary rocks are rocks are rocks are formed by materials that have been derived by the processes of weathering and erosion from other, pre-existing rocks at the Earth's surface.
		Sedimentary rocks make up only about 5% of the Earth's lithosphere, but they are concentrated near the surface and actually represent about 75% of those rocks exposed at the surface.
		Sedimentary rocks also have important commercial value as a source of petroleum, ground water, building materials, and economically valuable mineral deposits such as aluminum, gold, iron and others.
	newterra.chemeketa.edu /Faculty/fraa/rocks/sedimentary/sedrxs.htm (535 words)

	Occurrence & Mineralogy of Sedimentary Rocks
		Since most sedimentary rocks are derived by processes of weathering, transportation, deposition, and diagenesis, the textures we find in sediment and sedimentary rocks are dependent on process that occur during each stage.
		In sediments or sedimentary rocks the porosity depends on grain size, the shapes of the grains, the degree of sorting, and the degree of cementation.
		A sedimentary facies is a group of characteristics that reflect a sedimentary environment different from those elsewhere in the same deposit.
	www.tulane.edu /~sanelson/geol212/sedrxintro.htm (3373 words)

	USGS Learning Web :: Explorers :: Rocks and Images
		Sedimentary rocks are formed at the surface of the Earth, either in water or on land.
		Temperatures and pressures are low at the Earth's surface, and sedimentary rocks show this fact by their appearance and the minerals they contain.
		Most sedimentary rocks become cemented together by minerals and chemicals or are held together by electrical attraction; some, however, remain loose and unconsolidated.
	interactive2.usgs.gov /learningweb/explorer/topic_rocks_sedimentary.htm (234 words)

	Sediments and Sedimentary Rocks
		Sedimentary rocks are classified by texture and composition into two major types, detrital and chemical.
		Evaporites are sedimentary rock composed of minerals precipitated from evaporated sea water (e.g., gypsum and halite).
		Sedimentary rocks tend to change in composition and nature laterally due to changes in depositional environment.
	www.geo.ua.edu /intro03/Seds.html (1841 words)

	Sedimentary Rocks (Site not responding. Last check: 2007-11-02)
		Sedimentary rocks are formed by deposition and precipitation (collectively known as sedimentation) of materials derived near earth's surface.
		Sedimentary rocks are generally stratified, fine-grained or composed of fragments of older rocks from which these were derived, such as pebbles, sand, angular fragments of older rocks, broken shells, rounded mineral grains and alteration minerals such as clays.
		Layers of sedimentary rocks are piled up one on top of the other a bit like a club sandwich.
	www.stemnet.nf.ca /CITE/rocks_sedimentary.htm (228 words)

	Appendix F - Sedimentary Rocks
		By studying sedimentary rocks the geologist attempts to reconstruct the conditions under which the sediment was produced, transported and eventually deposited.
		The layer of sedimentary rocks is relatively thin (especially as compared with the average thickness of the continental lithosphere), although there is good evidence that several tens of thousands of feet of sediment can accumulate in a basin.
		In the previous paragraphs a number of important clues for the interpretation of sedimentary rocks and the recreation of their history have been summarized.
	www.uc.edu /geology/org-cont/refer/INTERNETGUIDE/appendf.htm (2745 words)

	Sedimentary Rocks
		Sedimentary rocks are the product of 1) weathering of preexisting rocks, 2) transport of the weathering products, 3) deposition of the material, followed by 4) compaction, and 5) cementation of the sediment to form a rock.
		When rocks (igneous, sedimentary, or metamorphic) are at or near the surface of the earth they are exposed to the processes of weathering.
		Clastic sedimentary rocks may first be classified according to their grain size.
	www.columbia.edu /~vjd1/sed_rx.htm (1585 words)

	LAB 4 - SEDIMENTARY ROCKS
		Although sedimentary rocks make up only about 5% of the Earth's lithosphere, they are conveniently concentrated near and at the surface, where they actually represent about 75% of the rocks exposed at the surface.
		Clastic sedimentary rocks are formed from aggregates of particles that originate as mineral and rock fragments weathered and eroded from pre-existing rocks.
		These sedimentary particles may range in size from very large boulders down to those that are mud or clay-sized, and these size variations are used to classify these rocks.
	www-rohan.sdsu.edu /~rhmiller/sedimentaryrocks/SedimentaryRocks.htm (5814 words)

	WEATHERING/SEDIMENTARY ROCKS
		Sedimentary Rocks - Layered or stratified rocks formed at or near the earth's surface in response to the processes of weathering, erosion, transportation and deposition.
		Sedimentary rocks cover 75% of the earth's surface, but amount to only 5% of the outer 10 km.
		Examples of sedimentary environments in which cross beds form are dune fields and deltas.
	geology.csupomona.edu /drjessey/class/Gsc101/Weathering.html (1228 words)

Try your search on: Qwika (all wikis)