____________________name period ____ #_____

Chapman Creek Virtual Field Trip

Allers, Cleveland, Spanneut

Perry Jr. High, New Hartford, NY

Use the sedimentary rock identification chart on page 8 of your Earth Science Reference Tables and the information given in the Virtual Field Trip to answer the following questions.

Sample A – Frankfort formation

1. What is the grain size of the sediment in this clastic rock?

2. What rock name would you use to identify this sample?

3. Under what environmental conditions was the sediment that formed this rock deposited?*

Sample B – Frankfort Formation

1. What is the grain size of the sediment in this sample?

2. What rock name would you use to identify this rock?

3. Where might the sediment have come from to form this rock?*

4. How is the source of the sediment that formed this rock different from the source of the darker, more finely grained layers in the Frankfort formation?*

5. Do you think that this part of the world had few or many earthquakes during the late Ordovician period?*

Sample C – Oneida Formation

1. What is the grain size of the sediment in this rock?

2. What rock name would be given to this sample?

3. In what environment of deposition would this rock have formed?*

4. What does this rock indicate about sea level change from the late Ordovician to the Silurian in this part of the world?*

5. How much time is missing in the rock record between the deposition of the Frankfort formation and the Oneida formation?*

Sample D - Unknown formation

1. Examine sample D. Is this rock made of cemented grains or interlocking crystals?

2. Is rock sample D igneous, metamorphic, or sedimentary?

3. Is this rock similar to the other rocks you have looked at in this activity?

4. How could sample D have been deposited in the area around Chapman Creek?*

* More advanced questions- higher level thinking skills