Objectives: Understand glacial erosion, deal with and report "real" data.

1. Define: (5 pts each)

clast form

quarrying

P-forms (what type is this image of ?)

Nye-channels

2. Data Analysis

In this lab you were given the chance to sample the end-members of two erosion processes (fluvial rounding and glacial abrasion).

You collected samples by your own design (in the past we used Clast Data Collection) as a guideline.

We are not trying to classify the two samples (after all we were given the proceses), what we are trying to do is develop some way to measure the products of those two processes so that when we come across an unknown sample, we can apply that measure to determine its origin.

Thus we ask - "What charisteristic can we measure to "best" separate samples from these two processes?"

Your task is to try a couple measures to see how different the two samples are and pick and report on the best.

(In the past we added our data to the larger data [unit 1 is the glacial unit 2 is the fluvial] to increase the sample size, you are welcome to do so also. See Clast Data Collection for explination of symbols used.)

Reporting Format

Following the Laboratory Report Format , address the following specific question in +/- 2 pages:

• Describe the measure which best separates products from fluvial and glacial erosion processes.
• (Worth 50 points)
  • 30 pts for content
  • 20 pts for presentation

Some background information.

These should be e-mailed to me - they will posted on the web -

3. Thought Questions

(15 pts) Try this little Striation Problem.

4. Bonus

(15 pts) Suggest which erosion process(es) acted on this feature and if more than one in what order.

(50 pts) Use image analysis to measure these Glacial clasts, from Beardmore Glacier, Antarctica.

If you want to try this e-mail me for instructions

DUE

Sunday Midnight