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31 - Buoyance of water is almost the same as ice but some...

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01:06 1. Crust 2 Major Types: Oceanic and Continental DO NOT CONFUSE CRUST WITH LITHOSPHERE (crust is part of the  lithosphere, but not the same thing) Oceanic:     Mostly Fe + Mg-rich minerals (basalt and gabbro) Thin, typically 5 km Denser Continental:     Mostly Quartz and Feldspar Thicker, typically about 30 km Thinner in rift zones More buoyant Isostacy: Ex: Rubber Ducky in water   floats back up Relative Buoyancy Ice Berg – 90% sinks, but 10% is above sea level (DIAGRAM 8)
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Unformatted text preview: Buoyance of water is almost the same as ice, but some of it is less dense so 10% goes up Himalayas DIAGRAM 8 –dependent on the relative buoyancy Crustal Root (Low-Density) 20,000 years ago – Ice Age DIAGRAM 9 Elastic Crust, Denser Mantle Melting of the ice = elastic rebound Ex: Sit on top of the Styrofoam it would sink, if you get up it will rise again 01:06 01:06...
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  • '08
  • Denser Mantle Melting, relative buoyancy Crustal, Relative Buoyancy Ice, elastic rebound Ex, Ice Age DIAGRAM

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