tailieunhanh - Geography and Oceanography - Chapter 4

Alfred Wegener -1912 large “supercontinent” (Pangea) existed and then split into pieces fossil & glacial deposit evidence Wegener not able to provide MECHANISM for his theory Major mechanism later found in the OCEANS Harry Hess - 1960s new ocean basins form from volcanism ocean floor forms IN BETWEEN pieces that have split SEAFLOOR SPREADING | Today’s Tunes Fathoms Below / Under the Sea From soundtrack of Disney’s The Little Mermaid Continental shelf Submarine canyons (cut into the c. slope) Abyssal plain Continental rise Continental slope Seafloor Features: Continental Margins Abyssal plain Seamounts Abyssal Hills (linear hills) Seafloor spreading center (., East Pacific RISE or Mid-Atlantic RIDGE) Deep Ocean Seafloor Features: Deep Ocean Plate Tectonic Boundaries Ridges or Rises Trenches Transform Faults, Fracture Zones The Shifting Crust Continental Drift Alfred Wegener -1912 large “supercontinent” (Pangea) existed and then split into pieces fossil & glacial deposit evidence Wegener not able to provide MECHANISM for his theory Major mechanism later found in the OCEANS Seafloor Spreading & Plate Tectonics Harry Hess - 1960s new ocean basins form from volcanism ocean floor forms IN BETWEEN pieces that have split SEAFLOOR SPREADING Seafloor Spreading & Plate Tectonics Theoretical breakthrough PLATE TECTONICS surface of earth composed of “plates” (LITHOSPHERE) that move on a “conveyor belt” (ASTHENOSPHERE) Evidence for Continental Drift Fit of the continents Correlation of mountain belts Diversity of species correlation of dinosaur species (Pangea) isolation of mammal species (after breakup) Glaciers Important Quote “Relationships known since early in the century yet the validity of continental drift was not generally recognized until the late 1960’s” It took ocean floor data to solidify ideas and convince scientific community! The oceans rule! One Mechanism seafloor-spreading lithosphere asthenosphere Another Mechanism subduction world’s most explosive volcanos are formed over subduction zones Oregon’s Cascades Mtns. over Cascadia Subduction Zone Juan de Fuca plate under N. American plate “Munch and Crunch” “MUNCH” - subduction of oceanic plate under continent or ocean oceanic crust is thin and dense dives “CRUNCH” - collision of continental plates India into Tibet and China continental crust is . | Today’s Tunes Fathoms Below / Under the Sea From soundtrack of Disney’s The Little Mermaid Continental shelf Submarine canyons (cut into the c. slope) Abyssal plain Continental rise Continental slope Seafloor Features: Continental Margins Abyssal plain Seamounts Abyssal Hills (linear hills) Seafloor spreading center (., East Pacific RISE or Mid-Atlantic RIDGE) Deep Ocean Seafloor Features: Deep Ocean Plate Tectonic Boundaries Ridges or Rises Trenches Transform Faults, Fracture Zones The Shifting Crust Continental Drift Alfred Wegener -1912 large “supercontinent” (Pangea) existed and then split into pieces fossil & glacial deposit evidence Wegener not able to provide MECHANISM for his theory Major mechanism later found in the OCEANS Seafloor Spreading & Plate Tectonics Harry Hess - 1960s new ocean basins form from volcanism ocean floor forms IN BETWEEN pieces that have split SEAFLOOR SPREADING Seafloor Spreading & Plate Tectonics Theoretical breakthrough PLATE TECTONICS surface .

• Địa Lý
• Oceanography
• new ocean basins
• Geography
• The Future of Ocean Observing
• Seafloor Spreading
• Plate Tectonics
• Open Sea Observatories
• Human Awareness
• Oceanographic Observations
• Seismic Oceanography
• Physical Oceanography
• Internal Solitary
• tourism geography
• geographical documents
• ancient wonders
• natural wonders
• historic sites
• coastal engineering
• lectures
• ocean
• marine engineering
• Wonders of the World
• tourism sites
• Water World
• towering waves
• weather and climate
• Historical Review
• biological measurements
• El Niño and La Niña
• the Earth Unusual oceanic
• Coastal Ocean
• OSU glider operations
• Autonomous Underwater Gliders
• geophysics
• wave prediction
• ocean circulation
• tides
• ocean acoustic
• economic textbooks
• university documents
• a detailed outline of the subject
• coastal protection works oceanography
• flow
• coastal works
• designed a sea to sea
• economic syllabus
• detailed outline of study
• coast guard
• coastal protection works
• welding torches
• oblique waves to
• kỹ thuật bờ biển
• bài giảng địa lý
• hải dương học
• đại dương
• kỹ thuật biển
• River sediment loads
• sea water
• Marine Sediments
• oceanographic
• Sediment Transport
• Size Sorting
• The Water Molecule
• electrical attraction
• planet surface
• Physical States of Water
• Surface tension
• Temperature vs Heat
• Structure of the Ocean
• Light Absorption
• Ocean Temperature Solar Heating
• Global Heat Budget
• Annual Heat Budgets