GEO 1111 Lecture Notes - Lecture 7: Outer Core, Closure Temperature, Iceberg

• School: University of Ottawa
• Department: Geology
• Course: GEO 1111
• Professor: Donald Cummings

Document Summary

Refractory: a substance with a high mp and bp things that form rocks. H and he from big bang, not anymore since there was such a short amount of time (hard to get correct orientation) Boron to iron within stellar bodies- to create more heat, however there is an iron limit due to the amount of energy needed to make it. (more work than heat given) Iron to everything else with supernovas, more pressure and heat. Using radioactive elements as clocks. (ur, very long half life. 14- shorter half life: can date organic material. ) Half life: amount of time it takes for half the parent isotope to decay into daughter isotopes. Can date up to 10 half lives (otherwise not enough parent material) Earthquakes generated when a fracture within the earth is caused, elastic defamation until eventually theres a rebound of energy within the crust. Epicenter is the surface, focus is where the earthquake originated.