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15: Sea Change episode artwork

EPISODE · May 24, 2022 · 15 MIN

15: Sea Change

from Bedrock: Earth's Earliest History

How do we know when the first oceans existed?Water leaves its' fingerprints over every surface of Earth, even in the oldest, toughest crystals. Today, we'll take an imaginary ride through the earliest oceans, examine how water slowly transforms everything it touches, and how these changes are recorded in the Jack Hills zircons, 4.4 billion years ago. Extra Credit: Make an underwater rock garden, walk into a muddy beach, or visit a dog park.

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15: Sea Change

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Frequently Asked Questions

How long is this episode of Bedrock: Earth's Earliest History?

This episode is 15 minutes long.

When was this Bedrock: Earth's Earliest History episode published?

This episode was published on May 24, 2022.

What is this episode about?

How do we know when the first oceans existed?Water leaves its' fingerprints over every surface of Earth, even in the oldest, toughest crystals. Today, we'll take an imaginary ride through the earliest oceans, examine how water slowly transforms...

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