What scale of maps would be appropriate for presenting a geologic resource inventory of about one million acres?

• A. Large scale maps
• B. Small scale maps
• C. Medium scale maps
• D. Topographic maps

Answer: (B)

Scale determines how much area a map covers and how much detail is shown. For a geologic resource inventory spanning about one million acres, you want to present broad spatial patterns over a wide region rather than drilling down to fine site-level detail.

Small-scale maps cover large areas with less detail, allowing the entire inventory to be shown on a practical number of sheets while still communicating regional distribution and trends. Large-scale maps would be too detailed to cover such a vast area efficiently, requiring many pages and making it hard to see the big picture. A medium scale could work, but it wouldn’t be as efficient for representing the whole extent, whereas small-scale mapping best suits regional inventories. Topographic maps describe terrain and can be produced at various scales, so they aren’t a scale category themselves.

Thus, small-scale maps are the appropriate choice.