Printable Copy of the Field Study Guide (PDF)
Printable Copy of the Field Study Guide (PDF) Printable Copy of the Field Study Guide (PDF)
3) (a) How is chert nodule formation similar to how stalactites are formed? (b) Using the boulder with the nodules, explain the concept of differential weathering. Cephalopod Reading: Cephalopods are an ancient group that appeared some time in the late Cambrian period several million years before the first primitive fish began swimming in the ocean. Scientists believe that the ancestors of modern cephalopods (Subclass Coleoidea: octopus, squid, and cuttlefish) diverged from the primitive externallyshelled Nautiloidea (Nautilus) very early - perhaps in the Ordovician, some 438 million years ago. How long ago was this? To put this into perspective, this is before the first mammals appeared, before vertebrates invaded land and even before there were fish in the ocean and upright plants on land! Thus, nautilus is very different from modern cephalopods in terms of morphology and life history. -http://www.thecephalopodpage.org/ (a) Identify the fossil in the boulder. (b) What does the fossil tell you about the environment in which the rock was formed? (c) What does this fossil tell you about the type of rock in which it’s found?
5) (a) Why do the tree roots appear to grow out in mid air along the stream walls? (b) Why are some of these roots flattened? 6) List and describe the weathering and erosional processes that are taking place with the bedrock containing the tree roots in the table below. Physical Weathering Chemical Weathering Erosional Processes
- Page 1 and 2: June's place Gravel Pit Site: Clark
- Page 3 and 4: 5) Describe the series of events th
- Page 5 and 6: Relative Age Ripple Marks Root Wedg
- Page 7 and 8: 5. Since only one reading for the g
- Page 9 and 10: Questions - Station #1 1) (a) How d
- Page 11 and 12: 2) Make several observations to des
- Page 13 and 14: (b) Suggest how these cracks were f
- Page 15 and 16: Side of Boulder Fossil in Boulder
- Page 17: 5) Make several detailed observatio
- Page 21 and 22: Profile Activities _________ % Usin
- Page 23 and 24: time it takes to form a pothole? Ex
- Page 25 and 26: Sketch a cross-section across the s
- Page 27 and 28: 2) Relative date the following from
5) (a) Why do <strong>the</strong> tree roots appear to grow out in mid air along <strong>the</strong> stream walls?<br />
(b) Why are some <strong>of</strong> <strong>the</strong>se roots flattened?<br />
6) List and describe <strong>the</strong> wea<strong>the</strong>ring and erosional processes that are taking place<br />
with <strong>the</strong> bedrock containing <strong>the</strong> tree roots in <strong>the</strong> table below.<br />
Physical Wea<strong>the</strong>ring Chemical Wea<strong>the</strong>ring Erosional Processes
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