Look at the following samples of sedimentary rocks. Remember that
these are just small pieces that represent an entire depositional
environment. Deriving information from small samples does not give you
the full story. Your sample may have been created in 1 day, and then
took 100 years to be cemented together. But the entire rock formation
where your piece was collected may have taken millions of years to form.
Use a hand lense to look at the samples in detail. Answer the
questions while looking at the sample.
Grand Canyon - a more complete picture