Earth History

What is the Law of Superposition?

It states that older rocks are on the bottom of a sequence and that rock layers are younger as you move upward.
What type of fossil is a dinosaur footprint?

Trace fossil
What is an unconformity?

A buried surface of erosion creating a gap in the rock layers.
What type of dating gives you an actual age (with a number)?

Absolute
What happened at the end of the Paleozoic?

Mass extinction of life
In what era did humans appear?

Cenozoic
What era includes the rise and fall of the dinosaurs?

Mesozoic
What era is known as the "Age of Ancient Life?"

Paleozoic

Author

lvana

18235

Card Set

Earth History

Description

Flashcards to review for the earth history, fossils, stratigraphy, and geologic time test.

Updated

2010-05-14T21:17:00Z

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