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vobulary chapter 10

TermDefinition
Relative age Is the age of rocks and geologic features compared with other rocks and features nearby.
Superposition Is the priniciple that in undisturbed rock layers, the oldest rocks are on the bottom.
Inclusion A piece of a older rock that becomes part of a new rock is called a inclusion.
Unconformity is a surface where rock has eroded away, producting a break, or gap, in the rock.
Correlation matching rocks and fossils from seperate locations is called correlation.
Absolute age to mean the numerical age, in years, of a rock or objects.
Isotopes are atoms of the same element that have different numbers of neutron
Radioactive decay is the process by which on unstable element naturally changes into another element that is stable
Fossils are the preserved remains or evidence of ancient living things.
Catastrophism is the idea that condidtions and organisms on earth change in quick, violent events.
Uniformitarianism states that geologic processes that occur today are similar to those that have occured in the past.
Carbon film is the fossilized carbon outline of an organism or part of an organism.
Mold is the impression in a rock left by an ancient organism.
Cast is a fossil copy of an organism made when a mold of the organism is filled with sediment or mineral deposits
Trace fossil is the preserved evidence of the activity of a organism
Paleontologists scientist who study fossils are called paleontologist
Half-Life is the time required for half of the parent isotopes to decay into daughter isotopes
Index Fossil a fossil representative of a species that existed on earth for a short period of time was abundant and inhabited many locations
Created by: harriala
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