Don't Panic Geocast

Why do mountains form, earthquakes happen, and volcanoes form where they do? The answer is plate tectonics. This week we explore the history of being wrong about how the Earth works. Shannon’s Keyboard Plate Tectonics Tectonics is from the Greek tekton or “builder” Ben Franklin’s Letter Alfred Wegener The Origin of Continents and Oceans (Book by Wegener) Mesosaurus Arthur Holmes (1928) NOAA Seafloor Spreading Activity Seafloor spreading proposed by Hess and Dietz B.O.B and NDGT rap battle about the shape of the Earth John Tuzo Wilson Mantle Convection Slab Pull Chain demonstration Plate Boundaries Divergent Convergent Transform Lava lakes as analogs Fun Paper Friday How does cement harden? Does it turn into a continuous material or is it still a bunch of grains stuck together? Find out with this week’s Fun Paper Friday! MIT News Story on Research Ioannidou, K., Krakowiak, K. J., Bauchy, M., Hoover, C. G., Masoero, E., Yip, S., et al. (2016). Mesoscale texture of cement hydrates. Proceedings of the Nati