February 10, 2018 By webmaster 0 Comments Teacher Development: Relative Age Determination Relative Age of Rocks Volcanoes, molten magma,…and a nice cup of tea! Student Development: Recent Advances in Understanding the Geology of Diamonds How Old is the Atlantic Ocean? Plate Tectonics NOAA: Ocean Floor Features Explore the World’s Most Detailed Map of the Seafloor Pangaea, The Continent