Cascade Volcanism Concept Sketch

Create a concept sketch of Crater Lake caldera through time

  1. Watch both videos in the link.
  2. Create your Concept Sketch

In the videos, you saw three examples of concept sketches. They each illustrate different ways to construct concept sketches starting with either a picture or a definition as a prompt. The water cycle and the divergent boundary concept sketches illustrate the important processes using a single figure while the unconformity concept sketch uses several panels to illustrate how the system evolves with time.

In this activity, you’ll create a multi-panel concept sketch showing the formation and evolution of the Crater Lake caldera over time. Your first panel should start before the caldera forms and show the general tectonic setting that produces volcanism here. Your sketch must be hand drawn (with pen on paper or with editing software). Be sure to carefully annotate your sketches, use different scales where appropriate, and don’t be afraid to use color in your illustration. They don’t need to be professional, but should simply convey as much information as necessary.

Below are a few features that you’ll want to draw and label on your sketches, but feel free to add any other relevant information to flesh out the concepts.

  • Tectonic forces (show directional arrows)
  • Tectonic setting
  • Role of fluids in creating magma
  • Processes leading to caldera formation
  • Primary volcanic products (including rock type(s))
  • Includes these topics in your sketch:Juan de Fuca Plate
    North American Plate
    Directional Forces
    Subduction and melting
    Cascades volcanic region
    Rock types
    Eruption style
    Magma chamber
    Collapse of volcano
    eruption products
    after eruption/evolution of caldera
    Mount Mazama

Before submitting your uploaded file, be sure everything is clearly legible and that your files are either .png .jpg or .pdf files. Name your file in the format of lastname_firstname_app4.(file type) and upload it in this question.

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