1. Plate Tectonics 2. The Plates 3. How do we know this? Part 1 – older evidence Biology – same fossils in different parts of the world Geology – same rocks in different…

Slide 1 Chapter 3 The Origin of Ocean Basins ©2003 Jones and Bartlett Publishers Slide 2 Introduction Last week: Physiography of ocean floor- what it looks like. - Earth’s…

Development of Sea Floor Spreading DSDP 1950,s SONAR Sea- floor Spreading The longest chain of mountains in the world is the Mid-Ocean Ridge. Scientists have mapped the ocean…

Meteor Crater, Arizona http://www.solarviews.com/eng/tercrate.htm 1.2 kilometers (0.7 miles) 40,000 years old Wolfe Creek, Australia 0.9 kilometers (0.5 miles) 300,000 years…

Development of Sea Floor Spreading DSDP 1950,s SONAR Sea- floor Spreading The longest chain of mountains in the world is the Mid-Ocean Ridge. Scientists have mapped the ocean…

1. Plate tectonicsBoundaries and Hotspots 2. How do we know this?Part 1 – older evidenceBiology – same fossils in different parts of the worldGeology – same rocks in…

Chapter 18Chapter 18Oceans and CoastsChapter 18Outline Ocean exploration & oceanography The globes oceans-Lithosphere density and ocean basins-Global ocean landscape…

Biogeochemical cycles - The lithosphere Lithosphere = crust + upper portion of the mantle Rocks and Minerals of the crust Crust is the interface with the other geospheres…

Continental Drift Continental Drift Mobile Continents Alfred Wegener: Continental Drift in 1915 German geophysicist and meteorologist. He suggested that a single super-continent…

Meteor Crater, Arizona http://www.solarviews.com/eng/tercrate.htm 1.2 kilometers (0.7 miles) 40,000 years old Wolfe Creek, Australia 0.9 kilometers (0.5 miles) 300,000 years…