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Geologic Time

Relative Age Geologic Time

QuestionAnswer
gap in geological record where some rock layers have been lost due to erosion unconformity
lava that hardens on the surface extrusion
rock age compared with ages of other rocks relative age
magma cools and hardens into a mass beneath the surface intrusion
method used to determine absolute ages of rocks by determining amount of radioactive element it contains radioactive dating
number of years since the rock formed absolute age
widely distributed and represent a type of organism that existed briefly index fossil
oldest layer of rock is at the bottom in sedimentary rock layers Law of Superposition
Created by: caron.kosters
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