Analyze this fossiliferous rock from New York.

Analyze this fossiliferous rock from New York.

Activity 8.1C –Question 1 no need to submit the figure to show your tracing of the contacts (Page 218)

  1. Using a pen, trace two of the contacts between layers of the red sandstone as well as you can. Assuming that the red sandstone layers were originally horizontal, what may have caused them to be folded in this way?

Activity 8.3A – (Page 221)

A. Analyze this fossiliferous rock from New York.

Figure 8.10

  1. What index fossils from Figure 8.10 are present?
  2. Based on the overlap of range zones for these index fossils what is the relative age of the rock (expressed as the early, middle, or late part of one or more periods of time)?
  3. Using Figure 8.10, what is the absolute age of the rock in Ma (millions of years old/ago), as a range from oldest to youngest?

Activity 8.5A (Page 223)

A. Refer to the image below, an outcrop in a surface mine (coal strip mine) in northern New Mexico. Note the sill, sedimentary rocks, fault, places where a fossil leaf was found, and isotope data for zircon crystals in the sill.

  1. What is the relative age of the sedimentary rocks in this rock exposure? Explain your reasoning.
  2. What is the absolute age of the sill? Show how you calculated the answer.
  3. Locate the fault. How much displacement has occurred along this fault

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