Geologic Timeperiod Boundaries Flashcards by Aaron Shim | Brainscape

Q

Pleistocene-Holocene

A

11 Ka (11,000 years ago)

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Q

Eocene-Oligocene

A

34 Ma (34 million years ago)

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Q

Creataceous-Paleogene (K-Pg)

A

66 Ma (66 million years ago)

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Q

Permian-Triassic (P-Tr)

A

252 Ma (252 million years ago)

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Q

Precambrian-Cambrian (pC-C)

A

541 Ma (541 million years ago)

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Q

Archean-Proterozoic

A

2.5 Ga (2.5 billion years ago)

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Q

Hadean-Archean

A

4.0 Ga (4 billion years ago)

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Q

Formation of earth

A

4.5 Ga (4.5 billion years ago)

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