Oceanic Basin by Joshell Ballano https://padlet.com/ballanojoshell09/pf6zhmkldlcnip1b An oceanic basin is the land surface under an ocean that includes the various topography below the water. en-us 2023-01-30 23:46:40 UTC 2023-02-01 12:20:54 UTC hello@padlet.com The Structure of Ocean Basins ballanojoshell09 https://padlet.com/ballanojoshell09/pf6zhmkldlcnip1b/wish/2464363019 The continental margins of major features of the ocean floor are

]]> 2023-02-01 10:33:12 UTC https://padlet.com/ballanojoshell09/pf6zhmkldlcnip1b/wish/2464363019 Continental Shelf ballanojoshell09 https://padlet.com/ballanojoshell09/pf6zhmkldlcnip1b/wish/2464365314
  •  is a portion of a continent that is submerged under an area of relatively shallow water, known as a shelf sea.
  • less than 150 meters of water depth
    • ]]>     2023-02-01 10:35:27 UTC https://padlet.com/ballanojoshell09/pf6zhmkldlcnip1b/wish/2464365314     Continental Slope ballanojoshell09 https://padlet.com/ballanojoshell09/pf6zhmkldlcnip1b/wish/2464368027
  • depth up to 1200 meters
  • is a geological feature marking the divide between two ocean zones.
    • ]]>     2023-02-01 10:38:04 UTC https://padlet.com/ballanojoshell09/pf6zhmkldlcnip1b/wish/2464368027     Continental Rise ballanojoshell09 https://padlet.com/ballanojoshell09/pf6zhmkldlcnip1b/wish/2464374303
  • at the base of the continental slope 
  • is a wide, gentle incline from a deep ocean plain (abyssal plain) to a continental slope.
    • ]]>     2023-02-01 10:43:11 UTC https://padlet.com/ballanojoshell09/pf6zhmkldlcnip1b/wish/2464374303     Type of margins ballanojoshell09 https://padlet.com/ballanojoshell09/pf6zhmkldlcnip1b/wish/2464382053
  • Active (less than 1 kilometer wide) Active new ocean basins have a lot of new structures being created and shaped.
  • Passive (hundreds of kilometer wide)
     Inactive surface is slow to change and does little more than collect sediment.

    • ]]>     2023-02-01 10:50:22 UTC https://padlet.com/ballanojoshell09/pf6zhmkldlcnip1b/wish/2464382053     Abyssal fan ballanojoshell09 https://padlet.com/ballanojoshell09/pf6zhmkldlcnip1b/wish/2464398970
  • also known as deep-sea fans, underwater deltas, and submarine fans, are underwater geological structures associated with large-scale sediment deposition and formed by turbidity currents. 

    • ]]>     2023-02-01 11:07:30 UTC https://padlet.com/ballanojoshell09/pf6zhmkldlcnip1b/wish/2464398970     Mid ocean ridges ballanojoshell09 https://padlet.com/ballanojoshell09/pf6zhmkldlcnip1b/wish/2464416800
  • Above the oceanic floor
  • At the center of oceans basins
  • 23% of the earth’s surface water
  • Long linear mountain chain in all oceans and bound basins
  • Fracture zones are perpendicular to ridges 
    • ]]>     2023-02-01 11:24:36 UTC https://padlet.com/ballanojoshell09/pf6zhmkldlcnip1b/wish/2464416800     Oceanic Trenches ballanojoshell09 https://padlet.com/ballanojoshell09/pf6zhmkldlcnip1b/wish/2464438332
  • is a deep indent in the surface floor of the ocean and is the deepest part of the ocean
  • They are typically 50 to 100 kilometers wide and 3 to 4 km below the level of the surrounding oceanic floor, but can be thousands of kilometers in length
    • ]]>     2023-02-01 11:46:33 UTC https://padlet.com/ballanojoshell09/pf6zhmkldlcnip1b/wish/2464438332     Guyot ballanojoshell09 https://padlet.com/ballanojoshell09/pf6zhmkldlcnip1b/wish/2464448090
  • or seamount, is an undersea mountain 
  • Seamounts are formed by volcanic activity and can be taller than 10,000 feet.
  • They can be isolated or part of large mountain chains
    • ]]>     2023-02-01 11:55:49 UTC https://padlet.com/ballanojoshell09/pf6zhmkldlcnip1b/wish/2464448090     Stages of Ocean Basins Evolution (Wilson Cycle) ballanojoshell09 https://padlet.com/ballanojoshell09/pf6zhmkldlcnip1b/wish/2464460482
  • Embryonic 
  • Juvenile 
  • Mature 
  • Declining 
  • Terminal
  • Relict scar
    • ]]>     2023-02-01 12:07:33 UTC https://padlet.com/ballanojoshell09/pf6zhmkldlcnip1b/wish/2464460482     Embryonic ballanojoshell09 https://padlet.com/ballanojoshell09/pf6zhmkldlcnip1b/wish/2464465469
  • Continental rifting plays a key role in the formation of an ocean.
  • A new basin will become part of the eventual continental shelf-slope-rise zone
    • ]]>     2023-02-01 12:11:23 UTC https://padlet.com/ballanojoshell09/pf6zhmkldlcnip1b/wish/2464465469     Juvenile ballanojoshell09 https://padlet.com/ballanojoshell09/pf6zhmkldlcnip1b/wish/2464467963
  • Seafloor basalts begin forming 
  • Fairly shallow 
  • Normal marine sedimentation of muds, sand and limestone depending on local conditions.
    • ]]>     2023-02-01 12:12:51 UTC https://padlet.com/ballanojoshell09/pf6zhmkldlcnip1b/wish/2464467963     Mature ballanojoshell09 https://padlet.com/ballanojoshell09/pf6zhmkldlcnip1b/wish/2464469214
  • Broad as it widen 
  • Fairly shallow
  • Trenches develop and subduction begin
  • Abyssal plains form
  • Fully-developed shelf-slope-rise zone 

    • ]]>     2023-02-01 12:13:45 UTC https://padlet.com/ballanojoshell09/pf6zhmkldlcnip1b/wish/2464469214     Declining ballanojoshell09 https://padlet.com/ballanojoshell09/pf6zhmkldlcnip1b/wish/2464470355
  • Subduction eliminates much of seafloor and oceanic ridges
  • Dominant are spreading and shrinking 
    • ]]>     2023-02-01 12:14:51 UTC https://padlet.com/ballanojoshell09/pf6zhmkldlcnip1b/wish/2464470355     Terminal ballanojoshell09 https://padlet.com/ballanojoshell09/pf6zhmkldlcnip1b/wish/2464471169
  • African plate is being consumed under of European plate
  • the continents are not yet touching but subduction of the intervening oceanic crust causes a narrowing of the sea separating the continents
    • ]]>     2023-02-01 12:15:40 UTC https://padlet.com/ballanojoshell09/pf6zhmkldlcnip1b/wish/2464471169     Suturing ballanojoshell09 https://padlet.com/ballanojoshell09/pf6zhmkldlcnip1b/wish/2464477060
  • Continental collision 
  • Shrinking and uplifting of young mountains
  • Example can be given are the himalaya mountains
    • ]]>     2023-02-01 12:20:47 UTC https://padlet.com/ballanojoshell09/pf6zhmkldlcnip1b/wish/2464477060