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Flashcards - Plate Tectonics and Dating Methods

Flashcards - Plate Tectonics and Dating Methods
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asthenosphere
The asthenosphere is the highly viscous, mechanically weak and ductilely deforming region of the upper mantle of the Earth
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lithosphere
A lithosphere is the rigid, outermost shell of a terrestrial-type planet or natural satellite that is defined by its rigid mechanical properties
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eras
An era is a span of time marked by character, events, changes on earth, etc
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mantle
The mantle is a layer inside a terrestrial planet and some other rocky planetary bodies
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plates
A plate is a broad, concave, but mainly flat vessel on which food can be served
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faults
In geology, a fault is a planar fracture or discontinuity in a volume of rock, across which there has been significant displacement as a result of rock mass movement
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faults
In geology, a fault is a planar fracture or discontinuity in a volume of rock, across which there has been significant displacement as a result of rock mass movement
plates
A plate is a broad, concave, but mainly flat vessel on which food can be served
mantle
The mantle is a layer inside a terrestrial planet and some other rocky planetary bodies
eras
An era is a span of time marked by character, events, changes on earth, etc
lithosphere
A lithosphere is the rigid, outermost shell of a terrestrial-type planet or natural satellite that is defined by its rigid mechanical properties
asthenosphere
The asthenosphere is the highly viscous, mechanically weak and ductilely deforming region of the upper mantle of the Earth
divergent boundary
In plate tectonics, a divergent boundary or divergent plate boundary is a linear feature that exists between two tectonic plates that are moving away from each other
transform boundary
A transform fault or transform boundary , is a type of fault whose relative motion is predominantly horizontal, in either a sinistral or dextral direction
epoch
In the fields of chronology and periodization, an epoch is an instant in time chosen as the origin of a particular era
numerical dating
Absolute dating is the process of determining an age on a specified chronology in archaeology and geology
radioactive decay
Radioactive decay is the process by which the nucleus of an unstable atom loses energy by emitting radiation, including alpha particles, beta particles, gamma rays, and conversion electrons
relative dating
Relative dating is the science of determining the relative order of past events , without necessarily determining their absolute age,
rift valley
A rift valley is a linear-shaped lowland between several highlands or mountain ranges created by the action of a geologic rift or fault

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