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Geology Vocabulary for 7th Graders

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What is the common characteristic of angular unconformities, disconformities, and nonconformities?

They are all related to volcanic eruptions

They all indicate periods of no geological activity

They are all caused by meteorite impacts

They all involve the deposition of new rock layers on eroded surfaces (correct)

Which type of unconformity is characterized by tilted or folded rock layers overlaid by horizontal rock layers?

Angular unconformity (correct)

Transitional unconformity

Disconformity

Nonconformity

What is the distinguishing feature of a disconformity among the types of unconformities?

It occurs when sedimentary rocks are deposited on an eroded surface of crystalline rocks.

It involves the uplift and tilting of existing rocks followed by the deposition of younger rocks.

It represents a gap in the rock record between parallel sedimentary layers. (correct)

It involves the erosion of tilted or folded rock layers followed by deposition of horizontal layers.

Which type of unconformity occurs between sedimentary rocks and metamorphic or igneous rocks?

<p>Nonconformity (B)</p> Signup and view all the answers

Geology Vocabulary for 7th Graders

Choose a study mode

Podcast

Questions and Answers

What is the common characteristic of angular unconformities, disconformities, and nonconformities?

Which type of unconformity is characterized by tilted or folded rock layers overlaid by horizontal rock layers?

What is the distinguishing feature of a disconformity among the types of unconformities?

Which type of unconformity occurs between sedimentary rocks and metamorphic or igneous rocks?

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