Lab Exercise 14 & 15

Physical Geology Helpful Lab Hints

Structural Geology

Exercise 15, Problem 1:

a. Plot the strike and dip symbols as indicated below.

b. Complete the geologic map by inferring boundaries between the three rock types. Symbols are identified on page 254.

c. It might help to complete the cross section (d., below) to determine which rock type is on top.

d. To make a cross-section from X to Y.

Transfer the rock types present between X and Y on the map to the top of the cross section box at the bottom of the page.
Use the strike and dip symbols in outcrops C, D, and B to determine the trend of the rocks below those points. (see below)
Hint: Follow the sandstone, what happens to the sandstone layer in the center of the map? On the west side?

e. Compare the map and outcrop to the figures on page 267.