ESCI 1111 Lecture Notes - Lecture 7: Geothermal Gradient, Peridotite, Positron

• School: University of Windsor
• Department: Earth and Environmental Sciences
• Course: ESCI 1111
• Professor: samson

Document Summary

Motion in the mantle: see plume of material from mantle boundary relatively hot mantle that rises us gets close to surface and cool and magma. How long would it taken to construct mauna loa? flows are quite thin. Erupts about once a year to form one layer is 100 years put all of this together you need 1 million years by seeing what is happening today and applying the rule of uniformatorisnism. Mauna loa third answer is right built on an older volcano. Understand a little chemistry isotopes that don"t do this are stable isotope. 4 decay processes some isotopes will spontaneously change makeup (the nucleus changes) or decay to another isotope carbon 14 can decay into something else spontaneously. Alpha particle emission: emitted from nucleus comprises 2 protons and 2 neutrons this is the part that dangerous. Electron capture nucleus gains an electron that"s the opposite of beta change makeup of nucleus so it changes.