Correlation of Map Units chart from the Surficial Geologic Map of Yellowstone National Park
![Correlation of Map Units chart from the Surficial Geologic Map of Yellowstone National Park](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/full_width/public/media/images/YNP_surf_map_CMU.png?itok=OvUFqEZ6)
Detailed Description
An example Correlation of Map Units chart from the Surficial Geologic Map of Yellowstone National Park (U.S. Geological Survey, 1972) that demonstrates a typical classification scheme for surficial units. For this map, the units are classified by basic deposit type (horizontal axis) and subdivided by age and glacial interval (vertical axis).
Sources/Usage
Public Domain.