can anyone name me all the rocks??? and what group they are in.\nMetamorphic, sedimentary and igneous rocks...
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Metamorphic rocks are already existing rocks that change under heat, pressure or in chemical reactions (usually underground). Examples are Gneiss (that froms from Granite), Slate (formed from Shale), and Quartzite (formed from Sandstone).\n\nSedimentary rocks are rocks made from sediment (haha makes sense, no?) which can be both organic (fossils!) or inorganic. They are formed into a solid rock through a variety of different forces, including erosion, deposition, compaction, and cementation. There are 3 major groups of sedimentary rocks, which are clastic (formed from the compression of rock fragments), organic rocks (Key word: ORGANIC, aka the remains of plants and animals), and chemical rocks (formed when a solution dissolves, & minerals are left behind). Examples:\nClastic: Shale, Sandstone, Conglomerate, and Breecia\nOrganic: Coal, Limestone\nChemical: Halite, Gypsum\n\nIgneous rocks are formed from magma or lava. They are classifed according to where they were formed-- extrusive rocks are formed from lava on Earth's surface, while intrusive rocks are formed from hardened magma beneath Earth's surface. Texture and mineral composition are also factors of classification. Examples include granite (which is extremely abundant), Rhyolite, Pegmatite, Porphyry, Basalt, Pumice, and Obsidian.
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Igneous, they tell us a lot about what the age of the Earth and location of the poles.\n\nSedimentary, tell us the climate of an area and preserve fossils.\n\nMetamorphic, they look cool but are hard to tell anything from.  Their general location tells us of orogenies and faults.\n\nAll rocks are important and different geologists study different things.  Oil bearing shale is important to some geologist since if we can figure out an economical method of extraction we wouldn't be dependent on other countries for oil.\n\nGeology is like a big puzzle, and it's interesting seeing how the pieces fit together.
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Sedimentary Rocks usually have layers and are made up of pieces of other rocks. The grain size that makes up the sedimentary rocks can be of any size. Microscopic as in silt, small as in sandstone and large as in conglomerate.
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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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OMG!!!!\nYou rock girl-great research!
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http://www.acstones.com/gemofmonth/2001/gemofmonth.8.01.html
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Classification \nClastic \nBiogenic \nPrecipitate \n\nread and learn --> http://en.wikipedia.org/wiki/Sedimentary_rock#Classification
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This doesn't really belong in Earth Sciences.  Biology or Botany are more specific categories for questions about living matter.  However, I'm in a good mood because it's Friday.  Check the link.
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Well, sedimentary has "sediment" in it. You know, the yucky mud stuff on the bottom of a river or stream. That's what sedimentary rocks are made of.\n\nIgneous looks like ignite, which is to start a fire. Volcanoes have red-hot magma in them, and that's what igneous rocks are formed from.\n\nA metamorphosis is a change from being one thing to being something else (like a caterpillar becoming a butterfly.) Metamorphic rocks are formed when other rocks are transformed by heat and pressure deep withing the earth's crust. \n\nI know you probably wanted some kind of clever mnemonic device, but in this case all you have to do is remember the meanings of three common words.
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* rock - mineral matter of variable composition, consolidated or unconsolidated, assembled in masses or considerable quantities in nature, as by the action of heat or water. \n* Igneous rock - rock formed by the solidification of molten magma\n* metamorphic rock - rock altered by pressure and heat\n* sedimentary rock - rock formed from consolidated clay sediments
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Try Wikipedia, or perhaps your local library has a general Geology book that you can reference
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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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www.geology.com\n\nSeriously...\nGo there.
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Talc\nGypsum\nCalcite\nFluorite\nApatite\nFeldspar\nQuartz\nTopaz\nCorundum\nDiamond
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Also check out the " Four Peaks Amethyst Mine", its in Arizona. It will give you additional information which you are seeking.
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Sorry, they were never the greatest for me.  You are comparing too many different styles or genre's of rock.  Go listen to some Mountain, look for some of Jeff Becks work.  And for me, the best is CSN&Y though I do not put them in the same genre as the Stones.  One thing I will give the Stones though is longivity.
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the simplest explanation is as follows:\n\n* igneous rocks are formed when molten lava is erupted on to the earth's surface and cools. i.e. basalt lavas. \n\n* sedimentary rocks are formed when other rocks (possibly igneous, metamorphic or previous sediemtnary rocks) are eroded chemically or physically and are then redeposited. i.e. sandstones and mud stones.\n\n* metamorphic rocks are formed when other rocks (igneous or sedimentary typically) are buried and then exposed to high temperatures and pressures that change the properties of that rock. i.e. marble - metamorphosed limestone.