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34 Cards in this Set
- Front
- Back
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Geologic Time
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the long period of time occupied by the earth's geologic history.
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Eon
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a major division of geological time, subdivided into eras
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Epoch
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a division of time that is a subdivision of a period and is itself subdivided into ages, corresponding to a series in chronostratigraphy
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Era
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a long and distinct period of history with a particular feature or characteristic.
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Period
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a length or portion of time
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Half-Life
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the time taken for the radioactivity of a specified isotope to fall to half its original value.
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Radiometric Dating
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a method of dating geological or archeological specimens by determining the relative proportions of particular radioactive isotopes present in a sample.
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Radioactive Decay
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The spontaneous transformation of an unstable atomic nucleus into a lighter one
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Original Horizontality
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states that layers of sediment are originally deposited horizontally under the action of gravity
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Superposition
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principle of quantum theory that describes a challenging concept about the nature and behavior of matter and forces at the sub-atomic level.
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Dendrochronology
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the science or technique of dating events, environmental change, and archaeological artifacts by using the characteristic patterns of annual growth rings in timber and tree trunks.
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Fossil
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the remains or impression of a prehistoric organism preserved in petrified form or as a mold or cast in rock
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Ice Cores
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ice core is a core sample that is typically removed from an ice sheet
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Mass Extinction
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An extinction event (also known as a mass extinction or biotic crisis) is a widespread and rapid decrease in the amount of life on Earth.
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Paleozoic
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of, relating to, or denoting the era between the Precambrian eon and the Mesozoic era.
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Mesozoic
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of, relating to, or denoting the era between the Paleozoic and Cenozoic eras, comprising the Triassic, Jurassic, and Cretaceous periods.
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Cenozoic
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relating to or denoting the most recent era, following the Mesozoic era and comprising the Tertiary and Quaternary periods
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Geologic Time
|
the long period of time occupied by the earth's geologic history.
|
|
|
Eon
|
a major division of geological time, subdivided into eras
|
|
|
Epoch
|
a division of time that is a subdivision of a period and is itself subdivided into ages, corresponding to a series in chronostratigraphy
|
|
|
Era
|
a long and distinct period of history with a particular feature or characteristic.
|
|
|
Period
|
a length or portion of time
|
|
|
Half-Life
|
the time taken for the radioactivity of a specified isotope to fall to half its original value.
|
|
|
Radiometric Dating
|
a method of dating geological or archeological specimens by determining the relative proportions of particular radioactive isotopes present in a sample.
|
|
|
Radioactive Decay
|
The spontaneous transformation of an unstable atomic nucleus into a lighter one
|
|
|
Original Horizontality
|
states that layers of sediment are originally deposited horizontally under the action of gravity
|
|
|
Superposition
|
principle of quantum theory that describes a challenging concept about the nature and behavior of matter and forces at the sub-atomic level.
|
|
|
Dendrochronology
|
the science or technique of dating events, environmental change, and archaeological artifacts by using the characteristic patterns of annual growth rings in timber and tree trunks.
|
|
|
Fossil
|
the remains or impression of a prehistoric organism preserved in petrified form or as a mold or cast in rock
|
|
|
Ice Cores
|
ice core is a core sample that is typically removed from an ice sheet
|
|
|
Mass Extinction
|
An extinction event (also known as a mass extinction or biotic crisis) is a widespread and rapid decrease in the amount of life on Earth.
|
|
|
Paleozoic
|
of, relating to, or denoting the era between the Precambrian eon and the Mesozoic era.
|
|
|
Mesozoic
|
of, relating to, or denoting the era between the Paleozoic and Cenozoic eras, comprising the Triassic, Jurassic, and Cretaceous periods.
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|
|
Cenozoic
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relating to or denoting the most recent era, following the Mesozoic era and comprising the Tertiary and Quaternary periods
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