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Science Rock Test Study Sheet

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Question
Answer
clastic rocks   breccia or conglomerate, sandstone, shale  
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organic rocks   limestone, coal  
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chemical rocks   calcite, halite, gypsum  
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foliated rocks   slate, gneiss, schist  
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non-foliated rocks   quartzite, marble  
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intrusive rocks   granite, gabbro  
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extrusive rocks   basalt, obsidian, scoria, pumice  
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mafic   dark colored  
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felsic   light colored  
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intrusive...   formed inside the earth  
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extrusive...   formed on or near the Earth's surface  
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inorganic, solid, naturally occuring, chemical formula, and other unique physical properties   a mineral  
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regional metamorphisism occurs over...   big scale  
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contact metamorphisism occurs over...   small scale  
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pebble and larger clastic rock example(s)   conglomerates and breccias  
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sand sized clastic rock example(s)   sandstone  
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silt and clay sized clastic rock example(s)   shale  
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clastic rocks are cemented or...   pressed together  
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chemical rocks come out of...   solution  
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organic rocks are from former plants or...   animals  
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sandstone + heat/pressure =   quartzite  
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shale + heat/pressure =   slate  
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limestone + heat/pressure =   marble  
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slate + heat/pressure =   schist  
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granite + heat/pressure =   gneiss  
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why is quartizite is not a mineral?   no crystal structure  
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why do marble and limestone weather in the presence of acid?   compounds of calcium carbonate reacts with acid  
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steps in the formation of coal   peat > lignite > bituminous > anthracite  
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steps in the progression from clay/mud to schist   mud > shale > slate > schist  
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why are quartzite and marble non-foliated?   foliated rocks show layering  
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what type of sedimentary rock underlies valley and ridge   limestone  
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what region of the Virginia has Karst topography?   Valley and Ridge  
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