exam3guide_15 - ESS101 Fall 2015 Exam 3 study guide...

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ESS101 Fall 2015 Exam 3 study guide Geologic Time What the current best estimate for the age of the Earth? For the present day: Which eon? Which era? Which period? Which epoch? What is the difference between relative and absolute dating? What is radioactivity? Which isotopic systems are commonly used in geochronology? Understand the concept of closure temperature. What is a contact? What are the four main types of contacts? What are the three types of unconformities? Be comfortable with the principles of relative age dating so that you could work out the sequence of events in a block diagram such as we did in lab. Which isotopic system is used to date relatively young things? Geologic Structures Define stress, strain. What are the three kinds of stress? What are three types of strain? What factors determine how a rock responds to stress? Understand strike and dip and the symbol used on geologic maps. Be able to distinguish between a syncline and an anticline in cross section.
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  • Fall '10
  • MARTINHELMKE
  • Geology, deep focus earthquakes, current best estimate

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