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Meteorology

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TermDefinition
Amber Fossilized tree sap
Fossil The remains or impression of a prehistoric organism preserved in petrified form or as a mold or cast in rock.
Cast A mold filled with sediment and hardened to create a replica of the original fossil
Index Fossil A fossil that is useful for dating and correlating the strata in which it is found.
Mold An impression made by sediments by the hard parts of an organism
Permineralization
Trace fossil
Cross-cutting relationships One of Steno's principles that states that an intrusion or fault is younger than the rocks that it cuts through
Geologic time The divison of Earth's history distinguished by geologic and evolutionary events
Lateral Continuity A sedimentary rock layer that extends as wide as the basin in which it forms
Original horizontality Sedimentary layers that were formed horizontally
Relative age
Superposition
Unconformity
Uniformitarianism
Absolute Age The actual age of a mineral in years
Half-life The amount of time required for half of the atoms of a radioative substance to decay to the daughter product
Ice core long cylinder of glacial ice recovered
Isotope A chemical element that has a different number of protons
Radiometric dating
Differentiation The separation of planetary materials by density to create distictly different layers
Outgassing The transfer of gases from Earth's mantle to the atmosphere by volcanic eruption
Supercontinent
Pangaea
Orogeny A mountain building event. Takes up to 10-100 million years
Evolution The gradual development of something, especially from a simple to a more complex form.
Natural Selection the process whereby organisms better adapted to their environment tend to survive and produce more offspring.
Created by: Jayden1130
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