Historical Geology

Lab #7 Pre-lab Name _________________________

Read the Introductory text for Exercise 14 and answer the following questions.

1. The study and interpretation of ancient climates is known as:

2. a. List the lithologies that are evidence for an arid climate.

b. List the lithologies that are evidence for an humid climate.

3. Bauxites are evidence for a ______________________ paleoclimate, and are an important source of ______________________.

4. Invertebrate skeletal elements that lack seasonal banding is evidence for:

5. What organism is restricted to latitudes within 30 degrees of the equator?

6. During cold periods (glacial periods) the d18O of carbonate secreting organisms increases.

a. true b. false

7. Atmospheric concentrations of ________________ are related to global temperatures.

8. Which one of the Milankovitch cycles exerts a control over the degree of seasonality?