The Origin of Ocean Basins or Plate Tectonics

Dec 10, 2012

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Significance of Plate Tectonics. Unifying theory explaining many different observations in GeologyVolcanoesEarthquakesOcean RidgesDeep-Sea TrenchesMountain Belts. Outline. Structure of the EarthChemical StructurePhysical StructureContinental DriftSea Flood SpreadingPlate TectonicsEarthqua

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The Origin of Ocean Basins or Plate Tectonics

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PLATE TECTONICS

PLATE TECTONICS. Nafisa Skeie. What is plate tectonics?. The build up of plates…?. Or is it the build up of food onto a plate…?. Geographically…. Plate: Large, rigid slab of Earth’s solid rock. + Tectonics: From the Greek root “to build”. Plate Tectonics =

1.14k views • 19 slides

PLATE TECTONICS

PLATE TECTONICS. Objectives. Explain how paleomagnetism provided the definitive evidence for continental drift. Define seafloor spreading. Define theory of plate tectonics. Describe the different types of plate margins. Explain the role of mantle convection in plate tectonics.

1.29k views • 28 slides

Ocean Basins

Ocean Basins. The hypsigraphic curve. The submersible Alvin. Echo sounding Seismic Profiling. As they cool down through the Curie point, . The Formation of Magnetic Stripes. The Ocean Floor Sinks as it gets older .

678 views • 19 slides

Plate Tectonics

Plate Tectonics. Continental Drift. Evidence for Continental Drift A. Theory of continental drift is the idea that the continents have moved horizontally to their current locations. 1. This theory was developed by Alfred Wegener. 2. Wegener believed that all of the continents

512 views • 13 slides

Chapter 2 Plate Tectonics and the Ocean Floor

Chapter 2 Plate Tectonics and the Ocean Floor. Essentials of Oceanography 7 th Edition. Continental drift. Alfred Wegener, a German meteorologist and geophysicist, was the first to advance the idea of mobile continents in 1912

776 views • 31 slides

THE EVOLUTION OF OCEAN BASINS

2.08k views • 25 slides

The Ocean Basins

The Ocean Basins. Ocean Basins. Oceans are all connected, so it’s really just 1 big ocean! 5 ocean basins Atlantic Pacific Indian Antarctic (Southern) Arctic (northern extension of the Atlantic). Ocean Basins. How old are the Earth’s Oceans?.

933 views • 48 slides

Plate Tectonics and the Ocean Floor

Plate Tectonics and the Ocean Floor. Continental Drift. Theory proposed by Alfred Wegener in 1912 Continents once formed a single landmass. Early Evidence. Age of Oceanic Crust. Courtesy of www.ngdc.noaa.gov. Paleomagnetism. Plate Tectonics – 1960’s. Explains HOW the plates moved.

548 views • 31 slides