The document discusses marine biology topics covered in a lecture, including deep ocean basins, mid-ocean ridges, and hydrothermal vents. Deep ocean basins cover 70% of the planet and can be active or inactive. Mid-ocean ridges form as materials from the mantle push up the oceanic crust, leaving a central rift valley. Hydrothermal vents were discovered in 1977 and occur where hot water emerges from cracks in the ocean floor near spreading centers, supporting unique ecosystems.

1. Subject : Marine Biology
Lectured by : Prof: Chea Leng
Room : Samdach Oum Su
Topic : Deep-Ocean Basins, Mid-
Ocean Ridge, and Hydrothermal
Vents

2. Deep-Ocean
Basins, Mid-Ocean
Ridge, and The
Hydrothermal
Vents

3. Content
• Deep Ocean Basins
• Mid-Ocean Ridges
• The Hydrothermal Vents
• Conclusion
• References
3

4. 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
4

5.  Ocean Basin Features
 Abyssal hill
 Seamount
 Guyot
 Ocean trenches
Deep-Ocean Basins (Con’t)
5

6. 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”.
6

7. Mid-Ocean Ridge (Con’t)
7

8. The Hydrothermal Vent
8

9. 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.
9

10. The Hydrothermal Vent (Con’t)
• Process: water flout into the gap during oceanic
and the water got heated (400C) then it pushes up.
10

11. 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.
11

12. 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.
12

13. 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
13

14. Thank You for Your Paying
Attention!!!
Q & A
14