Reading Surficial Materials Maps - Figure 1

Figure 1. Typical distribution pattern of data points on a surficial materials map. Data collection is often concentrated along roads, near construction sites, and along stream banks and other natural exposures. Due to time constraints in the mapping process, inaccessible areas are not often investigated in detail, creating data "gaps" on the map. In these areas, topographic maps and air photos are used to interpret the underlying geology.

Last updated on October 6, 2005