In an area, a bed of sandstone is exposed. The slope of the ground and of the dip of the bed are 10° W and 20° E, respectively. If the width of the outcrop is 60 m , the true thickness of the sandstone bed is:
A. 20 𝑚
B. 30 𝑚
C. 40 𝑚
D. 50 𝑚
Answer:B
In an area, a bed of sandstone is exposed. The slope of the ground and of the dip of the bed are 10° W and 20° E, respectively. If the width of the outcrop is 60 m , the true thickness of the sandstone bed is:
A. 20 𝑚 B. 30 𝑚 C. 40 𝑚 D. 50 𝑚