The unconformable contact of Old Red Sandstone on vertical Silurian rocks noted by James Hutton, who in 1788 first recognized the significance of its meaning.
CHAPTER 10 SECTION 1. CONTINENTAL DRIFT Objectives Summarize Wegners hypothesis of continental drift Describe the process of sea floor spreading Identify.
Earth science. Plate Tectonics ppt
Prentice Hall Earth Science ch09 plate tectonics
Chapter 9: Plate Tectonics Review Feb 11, 2013. What to study? Layers of the Earth Convection Currents Continental Drift Sea-floor Spreading Theory of.
Natural Hazards Revision. Plate tectonics The core extends to about half of the radius of the Earth. It is made mostly from iron and nickel and is where.
OBJECTIVE Describe one piece of early evidence that led people to suggest that Earth’s continents may have once been joined. Drifting Continents Identify.
CONTINENTAL DRIFT SEAFLOOR SPREADING THEORY OF PLATE TECTONICS Plate Tectonics.
Plate Tectonics, Earthquakes and Volcanoes.. How do Scientists Know what is inside the Earth? Scientists use indirect evidence to determine what is inside.
Objectives Describe one piece of early evidence that led people to suggest that Earth’s continents may have once been joined. Drifting Continents Discuss.
Proposed by Alfred Wegener German scientist – 1912 Not accepted by scientific community until 1930’s Theory of Continental Drift All the continents were.
Please get your science notebook and get out your plate boundaries map and worksheet from Friday.
