A geologist wants to locate a horizontal coal bed on a soil- covered slope where soil creep is active. A distinctive sandstone bed underlies the coal bed. On the basis of weathered sandstone fragments in the soil, where is the coal bed?
A)just below the lowest piece of sandstone seen in the soil
B)just above the highest piece of sandstone seen in the soil
C)just above the lowest piece of sandstone seen in the soil
D)just below the highest piece of sandstone seen in the soil

Question

Quizplus · Accepted Answer

Since the coal bed is directly above the sandstone layer, the highest piece of weathered sandstone found in the soil indicates the closest point to the original sandstone layer, and thus the coal bed would be just above this point.

A Geologist Wants to Locate a Horizontal Coal Bed on a Soil-