Cutting Edge > Courses > Petrology > Teaching Activities > Calculating Rb-Sr Isochrons

Calculating Rb-Sr Isochrons

Andy Barth
,
Indiana University~Purdue University, Indianapolis
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This activity was selected for the On the Cutting Edge Reviewed Teaching Collection

This activity has received positive reviews in a peer review process involving five review categories. The five categories included in the process are

  • Scientific Accuracy
  • Alignment of Learning Goals, Activities, and Assessments
  • Pedagogic Effectiveness
  • Robustness (usability and dependability of all components)
  • Completeness of the ActivitySheet web page

For more information about the peer review process itself, please see http://serc.carleton.edu/NAGTWorkshops/review.html.


This page first made public: Oct 22, 2008

Summary

This is a spreadsheet that I use in petrology to walk students through calculating Rb-Sr isochrons and talking about isotope heterogeneity and sampling at various scales. The example exercise is the Tuolumne intrusive series.

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Context

Audience

This activity is designed for a sophomore or junior level required course in petrology.

Skills and concepts that students must have mastered

How the activity is situated in the course

This is a stand-alone exercise.

Goals

Content/concepts goals for this activity

This activity is designed to help students understand how to calculate Rb-Sr isochrons and addresses isotope heterogeneity and sampling at various scales.

Higher order thinking skills goals for this activity

Other skills goals for this activity

Description of the activity/assignment

This is a spreadsheet that I use in petrology to walk students through calculating Rb-Sr isochrons and talking about isotope heterogeneity and sampling at various scales. The example exercise is the Tuolumne intrusive series. The file, available for download below, contains workbooks (see different tabs) with example isochrons and a spreadsheet of data for the homework problems.

Determining whether students have met the goals

Students have successfully met the goals of this exercise if they answer the homework problem set completely and accurately.

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