a. The sedimentary rocks that Mount Royal has intruded into date back to the Ordovician. Estimate their youngest-possible age, and add this information to your sketches. [5 marks]
b. Eby provides ages for the igneous rocks that comprise Mount Royal. Estimate this age and add it to your sketches. Knowing that the hornfels facies rocks (Question 3) are the byproduct of contact metamorphism, what is their age most likely to be? Explain. [8 marks]
c. Are these relative ages, i.e., your answers to questions 4(a) and 4(b), consistent with the intrusion hypothesis? Explain. [2 marks]