Cutting Edge > Petrology > Teaching Activities > Origins of Mafic Enclaves in the Dinkey Creek Pluton, Central Sierra Nevada Batholith, California

Origins of Mafic Enclaves in the Dinkey Creek Pluton, Central Sierra Nevada Batholith, California

Jade Star Lackey
,
University of Wisconsin

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: Jun 6, 2008

Summary

In this lab exercise, students use and substantial spreadsheet of major, minor and trace element data compiled from studies of the Dinkey Creek pluton (Sierra Nevada batholith) and its microgranular mafic enclaves. The use of the Excel Add-in Petroplot is a must for this exercise to save time. The Petroplot Add-in and its instructions can be found at the following web site: Petroplot Add-in

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Context

Audience

This activity would be used in an undergraduate (sophomore or junior level) required course in petrology.

Skills and concepts that students must have mastered

Some familiarity with Excel is assumed. I've included a handout introducing the problem and discussing mafic enclaves in the Sierra Nevada batholith.

How the activity is situated in the course

This is a stand-alone exercise.

Goals

Content/concepts goals for this activity

The utility of the exercise is to familiarize students with major and trace element discrimination diagrams and spreadsheet databases as tools to consider if magma mixing can explain the origin of the mafic enclaves in this pluton.

Higher order thinking skills goals for this activity

This activity involves data analysis.

Other skills goals for this activity

Description of the activity/assignment

In this lab exercise, students use and substantial spreadsheet of major, minor and trace element data compiled from studies of the Dinkey Creek pluton (Sierra Nevada batholith) and its microgranular mafic enclaves. The use of the Excel Add-in Petroplot is a must for this exercise to save time. The Petroplot Add-in and its instructions can be found at the following web site: Petroplot Add-in

Some familiarity with Excel is assumed. I've included a handout introducing the problem and discussing mafic enclaves in the Sierra Nevada batholith. Pictures of typical enclaves are provided and can be dumped into Powerpoint for lecture purposes. Several questions [and answers] about to the student-produced graphs are included, but certainly are not exhaustive. The utility of the exercise is to familiarize students with major and trace element discrimination diagrams and spreadsheet databases as tools to consider if magma mixing can explain the origin of the mafic enclaves in this pluton.

Determining whether students have met the goals

Students have met the goals of this activity if they successfully complete the assignment.

More information about assessment tools and techniques.

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