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
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