Sedimentary deposits in the Canadian Rockies

Sedimentary deposits in the field: virtual field experience via GigaPan

Instructions: explore the images below. You can zoom in to any spot you would like to see more detail. If at first the image looks like a black box, then click the “reload” icon (a circular arrow) at the upper right. You are going to be comparing the sediment deposited by rockfalls, rivers, and glaciers.

Site #1 – How many different depositional settings can you count in this scene?

Compare and contrast the sediment which will likely be deposited in each.

 

Site #2 – Now consider this site, not too far away, yet sedimentologically quite different:

How many types of sediment do you see here? Compare and contrast them.

 

Site #3 – Here is a third site, showing a third characteristic style of sedimentation:

How does the sediment accumulating at this site compare to the first two sites? (Compare and contrast sites #1, #2, and #3.)

 

Deposit A: Describe the texture (rounding, sorting, grain size) of this sedimentary deposit.

Which of the three sites above (#1, #2, or #3) would be most likely to host this sedimentary deposit?

 

Deposit B: Describe the texture (rounding, sorting, grain size) of this sedimentary deposit.

Which of the three sites above (#1, #2, or #3) would be most likely to host this sedimentary deposit?

 

Deposit C: Does this sedimentary deposit more closely resemble deposit “A” or “B”? What sets it apart?

How many organic-rich soil horizons can you count in this deposit (including the modern soil on top)?

What story is therefore recorded by Deposit “C”?

 

Site #4 – Find a location in this image where the sedimentary deposit most closely matches site #1, site #2, and site #3 earlier in this virtual field experience.

Take a screenshot of each: rockfall sediment, river sediment, and glacial sediment, and submit those screenshots as your answers to this final question.

Please submit your answers to the instructor.