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geologic time scale

atmosphere the gaseous portion of the planet
eon largest time unit on the geologic time scale
fossils remains or traces of organisms preserved from the geologic past
geologic time scale the division of earth's history into blocks of time
glaciation covered with or affected by a glacier
igneous rock rock formed by the crystallization of molten magma
pangea proposed supercontinent, which 200 mya began to break apart
paleontologist scientist who studies fossils and the history of life
periods basic unit of the geologic time scale that is a subdivision of an era
phanerozoic eon part of geologic time that is represented by rocks containing abundant (lots of various) fossil evidence
plate tectonics theory which proposes that earth's outer shell consists of individual plates which interact in various ways
precambrian eon all geologic time prior to the Phanerozoic eon
radiometric dating a complex procedure of calculating the absolute age of rocks
relative dating a form of dating by placing rocks in their proper sequence
Created by: kcurtin
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