Paññāsāstra Univerity of Cambodia

Subject : Marine BiologyLectured by : Prof: Chea

LengRoom : Samdach Oum Su

Topic : Deep-Ocean Basins, Mid-Ocean Ridge, and Hydrothermal

Vents Prepared by : Group 2

Deep-Ocean Basins, Mid-Ocean Ridge,

and The Hydrothermal Vents

Content• Deep Ocean Basins• Mid-Ocean Ridges• The Hydrothermal Vents• Conclusion• References

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Deep-Ocean Basins• Ocean basins are those

areas found under the sea.

• About 70% of the planet's surface is made up of ocean basins

• Ocean basins can be either active ocean basins or inactive ocean basins

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Ocean Basin Features Abyssal hill Seamount Guyot Ocean trenches

Deep-Ocean Basins (Con’t)

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Mid-Ocean Ridge• Mid-ocean ridge is formed when

materials rising from the mantle pushes up by the oceanic crust.

• After crust it will leave a great gap called “Central Rift Valley” or known as “Wound in the Earth’s Crust”.

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Mid-Ocean Ridge (Con’t)

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The Hydrothermal Vent

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The Hydrothermal Vent (Con’t)

• Hydrothermal vents are the result of seawater percolating down through fissures in the ocean crust in the vicinity of spreading centers

• The Scientists first discovered hydrothermal vents in 1977 while their exploring near the Galapagos Islands.

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The Hydrothermal Vent (Con’t)

• Process: water flout into the gap during oceanic and the water got heated (400C) then it pushes up.

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The Hydrothermal Vent (Con’t)

• A black smoker is a kind of hydrothermal vent that can be found on the ocean floor.

• It’s contained the rich of dissolved minerals such copper, iron, zinc, most notably of sulfides.

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Conclusion• Deep-sea hot spring is the greatest

interesting for both geologist and biologist.• Rich of marine life around hydrothermal

vents. • That all the result, what the scientists

studying from the complex system of the sea.

• Maybe everything's on what they’ve been discovered help to supply the world population with the raw materials.

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Reference• Marine Biology (Textbook) • http://

study.com/academy/lesson/ocean-basins-definition-formation-features-types.html

• http://oceanservice.noaa.gov/facts/vents.html• www.botos.com• http://cellrelics.com/tag/hydrothermal-vents/• http://c-est-quoi.com/en/define/hydrothermale

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Thank You for Your Paying Attention!!!

Q & A