Metamorphic, Sedimentary, Igneous Rock Characteristics Crossword
                   
                   
                   
                   
                   
                   
                   
                   
                   
                   
                   
                   
                   
                   
                   
                   
                   
 
 
Down: 1) -Parent Rock: Sandstone -Dense -Non-foliated -Contains large quartz crystals -Uniformly crystalline, making it harder to break than sandstone 2) -Parent Rock: Shale & Basalt -Extremely High Temps & Pressure -Many Varieties -Named for the major mineral content 3) -Particle fragments up to the size of the head of a pin -Well sorted -Predominantly quartz -Moderate porosity and permeability 5) -Parent Rock: Shale -Forms when the lowest degree of regional metamorphism occurs -Foliated -Very fine grained -Composed of mainly clay and quartz 6) -Parent Rock = Limestone -Largely made up of calcite -Will fizz with acids -Non-foliated -Sugar-like texture (gritty to touch) 10) -Forms from dissolved calcium in sea water -Ranges in color from brown to gray -Fine grained -Can contain fossils _Often will contain calcium carbonate and will fizz with weak HCL Acid Across: 4) -Extrusive -Porous -Formed from felsic magma/lava -Looks like a sponge -Will float on water 5) Sediments are very fine, about up to the size of flour Clay minerals Not Porous & Nearly Impermeable Smooth to touch -Brownish to Gray to Black 7) -Intrusive -Coarse-grained -Formed from Felsic Magma -Ranges in color from white to gray to pink -Extremely common in mountainous regions -Primarily made of quartz 8) -Extrusive -Very fine grained -Looks like glass -Conchoidal fracture -Formed from Felsic minerals, but, is usually dark colored due to the presence of iron oxides. 9) -Large fragments ranging from gravel to boulders -Coarsest clastic rock -Any mineral composition -Usually poorly sorted 11) -Extrusive -Fine grained -Formed from Mafic Magma/Lava -Ranges in color from dark gray or black -Most common rock formed from lava flows -Igneous rock that makes-up the ocean floor 12) -Forms from the fossilized remains of plants. -Black -Extra Fine Grained -Primarily Carbon 13) -Intermediate composition -Color ranges from medium gray to dark green -Coarse grained -Intrusive -Less quartz than granite
 

 

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