Similarities between granite and basalt?
82561
Both are igneous rocks, meaning they formed from molten rock (called magma when it is underground and lava when it is on the surface) and are pretty hard and dense, but the similarities trail off fast from there.\n\nGranite is an intrusive rock, which means it cooled off slowly well underground and crystals had time to grow relatively large.  If the crystals grow really large they call the rock a pegmatite; I've heard of a pegmatite in Russia with feldspar crystals the size of boxcars.\n\nBasalt is an extrusive rock, which means the molten rock flowed out onto the surface and cooled there quite quickly, leaving very little time for crystals to grow.  Some basalts do include some larger crystals that formed while the magma was still underground and moving up (and cooling) relatively slowly.  I've seen basalt from Hawai'i that contains pea-sized lumps of green olivine crystals.\n\nThe two differ chemically as well.  Granites contain more silica, and tend to be lighter in color than basalts.  Basalts tend to be more alkaline.\n\nGranites are associated with relatively low temperatures, around 800 degrees Celsius.  The minerals in basalt typically form at temperatures above 1300 degrees celsius.\n\nGranites are formed in continents , while basalts form at ocean spreading centers, like the mid-Atlantic Ridge, "hot spots", like the one that formed Hawai'i, and sometimes on continents.  Basalt also erupts on land; there are huge masses of basalt in the western United States (the Columbia River basalts) and in western India (the Deccan traps).
644490
granite it not permeable, its impermeable. Unless of course if you dissolve the various minerals using acid to make it permeable.
213437
That is like asking someone to list all of the existing and past mountain ranges on the Earth. However, not all mountain ranges have exposures of granite. In any case, the list would be quite long. \n\nGranite is found in many parts of the continental crust. Granite is associated with volcanic areas, continental shields (old parts of the continents), and orogenic belts. It forms batholiths (very large area), plutons (smaller in size) and sills and dikes. Granites only form beneath the surface as intrusive rock, and are later exposed by erosion and uplift.  \n\nGranite is found in the Canadian Shield, the Rocky Mountains, the Sierra's, the Appalachians, the Andes, the Arbuckle Mountains in Oklahoma, the Alps, the Pyrenees, West Antarctica, eastern Egypt, the Queensland Granite Belt in Australia, the Urals of Russia, the Zagros Mountains of Iraq,  ...and many many more places....\n\nHere is a good reference on the origins of granite:\nhttp://www.geologynet.com/granite1.htm\n\nThe answer about "granite is a basaltic rock" is wrong. Basalt is an extrusive mafic rock, and granite is an intrusive felsic rock, with a different mineral composition than basalt.
958216
Is all basalt radioactive , No. Might some basalt havae radioactive isotopes, yes maybe.sometimes
832073
Glass is made of sandstone.  Stone would be earth.
1066723
I'm quite sure it's A, extrusive rocks are exposed and cool very quickly.  Since they cool rapidly, crystals have no time to grow, and most crystals are smaller than a millimeter.  Obsidian, in fact, has no crystals at all and is a type of glass.  Intrusive rocks (such as granite) on the other hand, cool slowly (as they are insulated by the earth) and larger crystals form.  \n\nFor further information,\nhttp://www.geology.ufl.edu/Class_Notes/GLY2010_Fall_1996/summaries/intrus1.html\nhttp://www.nps.gov/brca/Geodetect/Rocks%20&%20Minerals/igneous.htm\n\nHope this is helpful.
99355
igneous extrusive basalt
762090
With ribbons in the structure (where the pressure changed the rock) just like gneiss\nWith sheets in the structure (also caused by pressure) just like schiste\nWithout ribbons or sheets (where heat changed the rock) just like marble
890775
rocks their more jaggedy, i know ur thinking they weigh the same, but a pound of rock is concentraded jaggedness, whilst feathers are all fluffy... so yeah rocks
205880
igneous... hmm fudge? sedimentary, sugar cookies? metamorphic chocolate chip. neat question but I think candy is more like igneous, fudge more like sedimentary, and metamorhic... crush up several types and rebake them as granite!
631145
I have to admit im not too clued up on the geology of Maryland, however over here in the UK we have in the Mendip Hills something which resembles Obsidian but in fact its not. On a university field trip we went to an old smelt, where the guys used to smelt Limestone and the result was this black shiny stuff that looked identical to Obsidian. The stuff was strewn all over the place in big heaps. Confused the 'ell out of us students initially until we were told the what it actually was. I wish I could remember more about it but then again uni was a bit of a blur!
479025
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.
331558
Oceanic crust is generally thinner since it is closer to the mantle, more dense since it is composed of mainly mafic basaltic rocks (have more ferromagnesians in them, i.e. iron) , and younger than continental crust since it is in a constant state of change near subduction zones and gets reformed sooner and more often then continental crust.
225768
Breccia is formed in a very similar fashion to conglomerate. The difference between the two rocks is that breccia's rock fragments are very sharp and angular. These rock fragments have not been transported by water, wind, or glaciers long enough to be rounded and smoothed like in the conglomerate. The cementing agents silica, calcite (CaCO3), and iron oxides are the same as in conglomerate.
442695
http://www.pubs.asce.org/WWWdisplay.cgi?9605225\nSaprolite is a rare find in our area.  We've found it in a few parking lots, and we can buy it from only a few dealers.\n\nSaprolite is also called "rotten granite" -- it really is granite that's been partially changed by thousands or millions of years of weathering. \n\nhttp://saltthesandbox.org/rocks/saprolite.htm\n\nProperties\n1.Saprolite forms when granite and other igneous and \nmetamorphic rocks are exposed to humid climates for \nthousands or millions of years. \n2.Saprolite is mostly reddish in color.\n3.Its crystals are usually pea-sized or smaller\n4.it started out as granite\n5.Is made mostly of the minerals feldspar and quartz, and may also contain small crystals of mica or darker minerals.
1069472
First of all any rock can undergo ductile formation under the right conditions...\n\n1.) Heat & pressure - if enough heat & pressure are applied as in conditions deep w/in the earth then ductile deformation can occur.\n\n2.) Time - if a rock has pressure applied over long periods of time then ductile deformation can occur. If done over short periods of time a rock may undergo brittle deformation no matter what type of rock it is.\n\nThe question you are asking I believe has to do w/ composition...\n\n3.) Composition - rocks w/ strong internal bonds are more likely to undergo brittle deformation whereas rocks w/ weak bonds will more than likely undergo ductile deformation. Rocks in the former category include igneous such as basalt & granite. Rocks in the latter category would include sedimentary & some types of metamorphic rocks.\n\nRocks such as quartz & feldspars tend to be very brittle whereas ones containing calcite & micas are more ductile.\n\nBased on this, the answer to your question would be dolomite just as the first person said.\n\nWhy? Rhyolite is composed of quartz & feldspar; Chert is made of cryptocrystalline quartz; Quartzite is made up of quartz (SiO2).\n\nDolomite is calcium magnesium carbonate or quite simply put, a carbonate rock. It will be more likely to deform than the other 3.
334845
Skip geology class?...j/k\n\nhere's a link to everything you never wanted to know about basalts\nhttp://en.wikipedia.org/wiki/Basalts