Questions 1 through 4. Refer to the 'Bedrock and Surficial Geology' and 'Geologic Maps Introduction' 'rollovers'.

5. Examine the geologic map shown below. The small rectangles represent outcrops of bedrock. The bedrock consists of four formations, labeled 1, 2, 3 and 4. Outside of the rectangles, the bedrock is covered and cannot be seen. On the map, draw inferred contacts to show what the outcrop pattern would look like if bedrock were exposed everywhere. Assume that each of the individual formations maintains a more or less constant thickness throughout the region. Make the pattern of inferred contacts as simple as possible while remaining consistent with the actual outcrops.

David J. Leveson