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Earth Science: Relative Dating and Geological Time Periods

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Earth Science: Relative Dating and Geological Time Periods

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Questions and Answers

What is the most prominent textural feature of regional metamorphic rocks?

Strike-slip faults

Magma

Foliation (correct)

Compressional stress

According to the text, which force is believed to be the reason behind the plate tectonics theory?

Gravity slab pull (correct)

Compressional stress

Magma force

Shearing force

What did Alfred Wegener propose?

Theory of Magmatic Differentiation

Theory of Shearing Force

Theory of Gravity Slab Pull

Theory of Continental Drift Theory (correct)

In which type of plate boundary would one expect to find folds and faults?

Convergent plate boundary Signup and view all the answers

Which type of rock is more viscous than felsic according to the text?

Mafic Signup and view all the answers

What happens during magmatic differentiation?

Creation of one or more secondary magmas from single parent magma Signup and view all the answers

What is the main purpose of relative dating in Earth science?

To determine the age of rock layers by comparing them with others in sequence Signup and view all the answers

What do index fossils primarily help with in relative dating?

Identifying specific geologic time periods Signup and view all the answers

What is the primary cause of mass extinctions, according to the given text?

Shock wave from comet collision Signup and view all the answers

Which geologic time period witnessed a dramatic increase in biodiversity of life on the planet?

Cambrian Signup and view all the answers

What do scientists use half-lives for in the context of radioactive decay?

Measuring the rate of decay of radioactive isotopes Signup and view all the answers

What does the Law of Horizontality state about the deposition of sedimentary layers?

The layers were originally deposited horizontally under the action of gravity Signup and view all the answers