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chapter-6

rocks

QuestionAnswer
rock cycle diagram showing how geologic forces and processes change one rock type to another
igneous rock rock type formed from cooling magma or lava
coarse large crystal size; result of slow cooling
fine small crystal size; result of rapid cooling
glassy no crystals present; result of very fast cooling
felsic light colored minerals; large percentage of silica
mafic dark colored minerals; large percentage of iron, magnesium, pryoxene, or other dark minerals
Bowen's Reaction Series pattern showing the order minerals crystallize from magma
vesicular full of holes; result of rapid cooling
prophyritic mixture of both large and small crystals; result of cooling slowly at first, then rapid cooling
intrusive igneous rock that forms slowly underground
extrusive igneous rock type that cools fast on the surface
sill igneous intrusion that forms between rock layers
dike igneous intrusion that cuts across rock layers
laccolith igneous intrusion that forms between rock layers, and pushes overlying rocks up into a domw shape
batholith largest type of igneous intrusion
stock igneous intrusion that forms between rock layers
sedimentary rock rock type formed from sediments cemented or pressed together, precipitating out of solution, or from organic material
clastic sedimentary rock that forms from sediments being compacted together; classified by size and shape of sediments
chemical sedimentary rock type that forms by minerals precipitating out of solution
organic sedimentary rock type that forms from once living things; examples are coal and coquina
evaporite another name for chemical
sorting when water or air deposits sediments by size (large particles first)
stratification layering of sedimentary rock
cross-beds slanting layers within a clastic sedimentary rock; result of changing wind or water directions
graded bedding characteristic of wind or water blown deposits of sediments that have largest particles on the bottom and smallest on top
ripple marks sedimentary rock feature which shows the wind or water effects on sand
mud cracks sedimentary rock feature formed by a muddy deposit drying and shrinking
metamorphic rock rock type formed by heat, pressure, or chemical reactions
foliated metamorphic rock texture that shows layers or bands
nonfoliated metamorphic rock type that has a blocky appearance
Created by: sisteele
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