History of the Earth: Geologic Time and Rock Stratification

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By UndisputableDahlia

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10 Questions

What is the primary reason for the occurrence of stratified layers in rocks?

How do scientists determine the relative age of fossils in stratified rocks?

What is the significance of index fossils in defining subdivisions of the geologic time scale?

What is the difference between relative and absolute dating in determining the age of stratified rocks?

In geologic time, what does stratification of rocks primarily indicate?

How are layers of stratified rocks used to show the relative ages of different rock layers?

What is the method used to determine the age of rocks by comparing them with rocks in other layers without figuring their exact date?

Which law of stratigraphy states that in the sequence of sedimentary rocks, those below the bed of rocks are older and those above are younger?

What type of unconformity represents a long period during which deposition stopped, erosion removed previously formed rocks, and then deposition resumed?

What is the name given to the long period during which deposition stopped, erosion removed previously formed rocks, and then deposition resumed?

Description

Test your knowledge of the history of the Earth and the processes behind rock stratification. Explore topics such as methods for determining the age of stratified rocks, relative and absolute dating, and the use of index fossils in defining geologic time subdivisions.

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