Professor Dave Explains
Pillow Lava, Dikes, Gabbro, and Peridotite
Magma from the Earth's crust routinely bubbles up, forming various types of volcanic rock on the ocean floor. What types of lava rocks can be found in the ocean? How are the formed and what happens to them over time? Plus, learn where...
PBS
Pbs Learning Media: Treasures of the Earth When Did Plate Tectonics Begin?
When you hear the word "diamonds" what comes to mind? Rings, necklaces, earrings? How about plate tectonics? Believe it or not, the minerals in diamond inclusions have helped scientists understand when the process of plate tectonics...