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The Formation of the Earth's Oceans

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Prachi Srivastava

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The Formation of the Earth's Oceans

by Prachi Srivastava and Maria Santillana

Where did all of the water in the oceans come from?

Theory #1: Volcanic Activity leading to Condensation

Theory #2: Comets brought in gases and condensed water vapor

Only watch this section!

Bibliography

watch till the end

"Age of Ocean Basins." Age of Ocean Basins. N.p., n.d. Web. 22 Sept. 2014.

"Cartoon World Clip Art." - Vector Clip Art Online, Royalty Free & Public Domain. N.p., n.d. Web. 21 Sept. 2014. <http://www.clker.com/clipart-cartoon-world.html>.

Earth the Biography: Oceans. Prod. National Geographic. YouTube. YouTube, 26 June 2008. Web. 22 Sept. 2014. <

"How Did the Oceans Form?" How Did the Oceans Form? N.p., n.d. Web. 22 Sept. 2014.

"Seminars on Science | American Museum of Natural History." Seminars on Science | American Museum of Natural History. N.p., n.d. Web. 22 Sept. 2014.

Tarbuck, Edward J., and Frederick K. Lutgens. Earth Science. Upper Saddle River, NJ: Prentice Hall, 1997. Print.

"Why Is the Ocean Salty?" Why Is the Ocean Salty? N.p., n.d. Web. 21 Sept. 2014. <http://www.palomar.edu/oceanography/salty_ocean.htm>.

Water in Earth's Mantle:

When did the earliest oceans form?

What evidence supports each of these ideas?

The earliest oceans formed about 3.8 billion years ago.

1) the mantle contains 3-6 times more water than our oceans

2) outgassing continues today, earth's atmosphere has similar gases

How old are the ocean basins on Earth today?

Cycle of Salinity

How did the oceans become salty?

(Make a guess!)

-the water flowed off the land bringing dissolved minerals, this process is often referred to as chemical weathering

The oldest one recorded is 150 million years old!

THANKS FOR LISTENING!

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