We speak with Sheldon from the C-Word podcast and mine his brain for valuable nuggets of geological data. He has a degree in geology and has experience in using his degree in the field for oil, gas and mining industries. We talk about uniformitarianism, catastrophism, the Younger Dryas, plate tectonics, the Mohorovicic Discontinuity, vulcanism, rock formation and dating technologies, and pirates at strip clubs. Thanks very much to The C Word for letting us borrow their geologist for one show! Check them out on Twitter @cwordpod and on iTunes. Enjoy! Exposed mantle material at Gros Morne National Park, Newfoundland "Ultramafic" rock, Gros Morne Subduction of oceanic crust Back-arc Basin and volcanic result of subduction The Mid-Atlantic Ridge Standing on the Mid-Atlantic Ridge exposed in Iceland Oceanic Gyre currents