what is the uses of sedimentary rocks?
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Greetings,\n\nSedimentary rocks have many uses.\n\n1.  Fossils are found in sedimentary rocks.  By analyzing the composition and age of the rock they are able to determine when the animal that made the fossil lived.\n\n2. Limestone and sandstone are two kinds of sedimtary rocks.  If you've ever drank from a cool crisp mountain stream you've probably drank water filtered through limestone or sandstone.\n\n3. Visit the badlands of North or South Dakota in the U.S. and you'll see sedimtary rock of immense beauty.\n\nThere are more uses I'm sure, but I'm supposed to be working.  Good luck with your question.\n\n-matt
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Sedimentary rocks are formed at the surface of the Earth, either in water or on land. They are layered accumulations of sediments: fragments of rocks, minerals, or animal or plant material. 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. The layers are normally parallel or nearly parallel to the Earth's surface; if they are at high angles to the surface or are twisted or broken, some kind of Earth movement has occurred since the rock was formed. Sedimentary rocks are forming around us all the time. Sand and gravel on beaches or in river bars look like the sandstone and conglomerate they will become. Compacted and dried mud flats harden into shale. Scuba divers who have seen mud and shells settling on the floors of lagoons find it easy to understand how sedimentary rocks form. \n\nExamples:\n\nArkose \nBreccia \nChalk \nChert \nClaystone \nCoal \nConglomerate \nCoquina \nDolomite \nEvaporite \nGreywacke \nLimestone \nMarl \nMudstone \nOolite \nSandstone \nShale \nSiltstone \n\nFor more check :\n\nhttp://interactive2.usgs.gov/learningweb/explorer/topic_rocks_sedimentary.htm\n\nhttp://en.wikipedia.org/wiki/Sedimentary_rocks\n\nhttp://en.wikipedia.org/wiki/List_of_rocks
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Fossils form in sedimentary rocks such as Limestone, Chalk and Mudstone. They can also be found in Metamorphic rock like Slate.
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The rocks are no problem. You can go outside & find those.\n\nIgneous rocks include granite & diorite which are relatively easy to find. They are commonly used around driveways & railroad tracks.\n\nSedimentary rocks can be shale, sandstones, conglomerates, limestone, mudstones, etc. Depending on where you live it may be harder to find these.\n\nMetamorphic rocks might also be a problem unless you live somewhere near the mountains. If you have a piece of marble or slate used in flooring & countertops, they are easier to get a hold of.\n\nThe fossils are harder to get unless you actually go out to a riverbed or live near a site known to contain fossils. Your best bet would be to search the net for a reputable dealer or find a store near where you live.\n\nHappy rock & fossil hunting & good luck on the project. :)
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In the "olden" days they used ground up volcanic rock. It was a safe abrasive used to polish the teeth and give them that shine you get after a cleaning in a Dental office.
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Decomposed rock and organic matter.
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To understand sedimentary rock layers, it is important to understand that the earth's surface is always slowly - but constantly - changing.  Mountains and other areas that are raised above the surrounding land are subject to wind, rain, and water which constantly wear them down.  The bits of sand, pebbles, and rubble that get worn down from mountains, mesas, and cliffs are pulled by gravity to the low-lying areas (valleys, lake beds, sea-shores) where they collect over time.  Over millions of years, these deposits can harden and petrify into sedimentary rock layers.  Other sedimentary rock layers (like limestone) form on ancient sea or lake beds and are the remains of the various animals and plants that lived in the water.\n\nThus when you look at the different layers of the Grand Canyon, you are looking at the petrified remains of what was once the surface of the earth (or the bottom of a sea bed) at a time the region was being covered with sedimentary material.  Different rock layers occur when changes to the environment cause one type of material to stop being deposited and new materials get deposited instead.  For example, a shallow sea may create layers of limestone.  If the sea later dries up and the now exposed sea bed gets covered over with blowing dry sand, then a layer of sandstone will be deposited on top of the limestone.  In this way, geologists can see how the surface of the earth changes at a given spot over time.\n\nAs for the specific rock layers in the Grand Canyon, here is a VERY SIMPLISTIC description of the situation and processes that produced the major rock layers (from the oldest layer at the bottom to newest at the top):\n\nVishnu Schist (bottom) - 1.7+ billion years ago the area around Grand Canyon was a series of volcanic islands surrounded by a shallow sea.  The resulting deposits of ash, sand, and mud created shales, sandstones and mudestones that were eventually compressed and distorted with time and pressure into gneiss and schist.\n\nTapeats Sandstone - There is a long period where the rocks from this area did not survive and so no record is left (the Great Unconformity).  Eventually this area became part of the edge of the still forming North American continent.  Sandy beaches in this area around 540 million years ago created this sandstone formation.\n\nBright Angel Shale - The water moved further inland, causing this area to be frequently underwater and covered with deposits of mud (which is where shale comes from).\n\nMuav Limestone - The water got deeper and the area became part of the sea-floor proper leading to limestone deposits.\n\nFollowing the Muav Limestone, the sea appears to have receded and the land was again above water.  Little is left from this period.\n\nRedwall Limestone - Around 363 million years ago, the sea moves in rapidly again and the area is once again part of a sea floor leading to limestone deposits.\n\nSupai Group and Hermit Shale - This is actually a lot of smaller layers (a mix of shales, mudstones, and limestones) created as the sea came in and went out numerous times over a period of 30 million years.\n\nCoconino Sandstone - The seas pulled back and this part of North America became part of a vast sand-dune filled desert (similar to North Africa).  The Coconino Sandstone is the petrified remains of ancient sand dunes.\n\nToroweap Formation and Kaibab Limestone (top of canyon) - The sea came back and turned the area first into shallow mud flats (Toroweap) and then drowned it completely into a sea floor (Kaibab) about 240 million years ago.\n\nOne frequent related question... how can Grand Canyon rock layers be from the bottom of a sea when the canyon rim is at 6000+ feet elevation, did the water get that high?  The answer is no... at the time that the sea floor deposits were created, this part of North America was much lower (ie: below sea level).  \n\nThe reason you can find limestone rock layers with fossil fish and clams at high elevations above current se
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The rocks cycle describes how rocks are formed or change over time.\n\nAll rocks start as magma and cool into igneous rocks.  These are typically eroded into sediments and form sedimentary rocks with cementation and compaction.  These can then be heated and defomed so that minerals change, and these changes form metamorphic rocks.  Metamorphic rocks that are heated so much are eventually turned into magma again so the cycle continues.\n\nThis was only one path on the cycle.  Each part of the cycle is interchangable, and each rock follows its own unique path.  An igneous rock can directly become metamorphic, like in a granitic gneiss, many sedimentary rocks are cycled and recycled dozens of times (e. g. quartzite).  The possibilities are endless.
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dairydahm is right!  It's conglomerate.  Sedimentary (so you were right, too) rocks can contain pebbles of similar or varying sizes, depending where it formed.  Below are some sites that have pics of conglomerates for you to check--if you don't believe us.  (I'm a geology teacher, by the way.  (-; )
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sand stone, is a type of sediment rock,quartz conglomerate,shelly limestone,oil shale,coal,rock fragments that result from weathering may be transported by glacilar movements wind waves or current,this debris,is deposited at a new location,as a sediment.
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Water, wind and ice can all cause erosion in rocks.  Wind will often blow small bits of sand or pebbles at a rock, which can wear it down.\nWater does something similar, slowly wearing down a rock over time.  This is why you often find round stones in and around rivers.\nWater also gets into the cracks of a rock.  As the water freezes, it expands and causes bits of the rock to break off.
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how related is your question with Zoology?\nAnyway\nmudstones are\nPhyllite\nShale\nSlate\nShist\n(depeding on how much degree original sedimentary rock is metamorphosed)
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Volcanic soil is rich in minerals and, if there is enough rain, can be rich farmland.  Volcanoes created the Hawaiian Islands, so they produce real estate.  Volcanic rocks include pumice, used as an abrasive for swimming pools hand soap, and pre-weathered jeans, and obsidian, used by early humans to make sharp stone tools.  Also zeolites, used for a wide variety of things (see sources).  Some volcanic rocks are broken into pieces and used as a decorative groundcover in landscaping. Eroding volcanoes can produce sand, which has many uses.
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Engineering geology and environmental geology both examine properties of earth & stone in relation to their uses.  For an example:  Examination of building sites considering the geology can be essential in earthquake, erosion or mudslide prone areas.  Most oceanography teams also include a geologist to help examine areas considered environmentally sensitive. Examination of runoff properties can help determine ways to prevent contamination of water supplies.  Though research is involved, these forms of geology tend to concentrate on application which creates better environmental modifications for humans.  A house or a parking lot that falls into a sinkhole isn't really useful; bridges that collapse due to tremors aren't desirable.  I suppose you could say these applications benefit us by allowing sensible and sustainable use of our environment.
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Calcite is often the primary constituent of the shells of marine organisms (e.g. plankton, bivalves, etc.)\n\nUses: In cements and mortars, production of lime, limestone is used in the steel industry; glass industry, ornamental stone, chemical and optical uses and as mineral specimens.
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Sedimentary rock forms relatively flat. Youngest always on top of the oldest. Just like a stack of newspapers if you were to accumulate them everyday.\n\nFolding from compressional stress is one. Rock is literally pushed together creating anticlines & synclines, upward folding & downward folding arches respectively.\n\nFaults can also do this. This can be accomplished through compressional (pushed together) or tensional (pulled apart) stresses.\n\nI am not too sure about this one but isostatic adjustment could possibly tilt rocks.\n\nHope this helps.\n\n:)
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coal is used to make coke for steel. liquefaction and gasification. \n\nsee for details\nhttp://en.wikipedia.org/wiki/Coal