Lesson 7: Structure and Evolution of Ocean Basin Flashcards
What covers the largest area of the earth’s surface?
Ocena Basins
Where ocean basin came from?
Volcanic rock
Where volcanic rock came from?
From the fissure that is located at the mid-ocean ridges.
Ocean basins are continuosly evolving and how many major ocean subdivision are formed?
Four major ocean subdivision
What are the four major ocean subdivision?
- North and South Pacific
- North and South Atlantic
- Indian Ocean
- Arctic Ocean
What is the largest, deepest and oldest existing ocean basin?
Pacific Ocean Basin
What is the second largest ocean basin?
Atlantic followed by Indian Ocean
What is the smallest ocean basin?
Arctic Ocean Basin
What are the features and structures formed in the formation of ocean basin?
There are 8
- Continental Shelf
- Continental Slope
- Continental Rise
- Abyssal plain
- Island
- Seamount
- Trench
- Mid-ocean ridge
What is the structure of the ocean basin that refer to the partly shallow extention of the continent underwater?
Continental Shelf
What is the structure of the ocean basin that refer to the transition of the continental shelf and deep ocean floor. This starts from the oceanic crust to continental crust?
Continental slope
What is the structure of the ocean basin that refer to the beggining of the ocean?
Continental Rise
What is the structure of the ocean basin that refer to the place where the sediments from the land are washed?
Continental Rise
What is the structure of the ocean basin that refer to the continental margin starts from continental shelf up to continental rise?
Continental Rise
What is the structure of the ocean basin that refer to the continental margin starts from continental shelf up to continental rise?
Continental Rise
What is the structure of the ocean basin that refer to the flattest part of the ocean?
Abyssal plain
How many percent of the earth’s surface are being covered by the abyssal plain?
50%
This is not just a peice of land floating up in the middle of the sea. What is the structure of the ocean basin that refer to its part extended up from the ocean floor?
Island
What is the structure of the ocean basin that refer to the undersea mountain?
Seamount
What destroyed the top of the seamount which caused it to be flattened?
Erosion caused by waves
What is the structure of the ocean basin that refer to the deepest part of the ocean?
Trench
What is the structure of the ocean basin that refer to the seafloor mountain system is situated in the middle of the ocean basin?
Mid-oceanic ridge
What is the structure of the ocean basin that refer to the seafloor mountain system is situated in the middle of the ocean basin?
Mid-oceanic ridge
What is the structure of the ocean basin that refer where the upwelling of magma happens which causes the seafloor spreading?
Mid-oceanic ridge
Who proposed the Wilson Cycle?
Canadian Geophysicist J. Tuzo Wilson
This refers to the opening (beginning) and closing (end) of an ocean?
Wilson Cycle
What are the 6 stage of evolution of ocean basin?
- Embryonic Ocean Basin
- Juvinile Ocean Basin
- Mature Ocean Basin
- Declining Ocean Basin
- Terminal Ocean Basin
- Suturing
This is the first stage of ocean basin where there is a hot spot underneath a stable continent that can lead to beggining of new ocean?
Embryonic Ocean Basin
This is the stage of ocean basin where the early rifting of a continent and opening of a new ocean can be seen?
Juvinile Ocean Basin
This is the stage of ocean basin where the full ocean basin can be seen?
Mature Ocean Basin
This the stage of oceanic basin where a subduction zone develops adjacent. The ocean begins the long process to close again?
Declining Ocean Basin
This the stage of oceanic basin where a subduction zone develops adjacent. The ocean begins the long process to close again?
Declining Ocean Basin
This refer to the stage of ocean basin where he remnant ocean basin is closing?
Terminal Ocean Basin
This is the last stage of evolution of ocean basin where the ocean basin has closed and the former sea bed can be found rising mountain chain formed as continental plated collide?
Suturing
