When making a geologic map and cross-section, a legend should always be included
ID: 803042 • Letter: W
Question
When making a geologic map and cross-section, a legend should always be included so that readers know the name/rock type and relative age of each unit included on the map. When making a legend for a map and cross-section, such as the one below, which of the following is true? The rock units should be placed in order from the oldest rock unit at the bottom of the legend to the youngest at the top. it does not matter in which order the rock units are placed, as long as they are clearly labeled. The rock units should be placed in order from the youngest rock unit at the bottom of the legend to the oldest at the top.Explanation / Answer
A
The rock units should be placed in order from oldest rock at the base and youngest rocks at the top