Creating and editing Geologic Units using the PGM Toolbox

In this demonstration video, you will lean how to create and update geologic unit polygons using the PGM Toolbox Build Polygons tool. The PGM toolbox is available here: https://doi.org/10.5066/P91ZHZGH ------ USGS video: https://www.usgs.gov/media/videos/creating-and-editing-geologic-units-using-pgm-toolbox