GIS database and discussion for the distribution, composition, and age of Cenozoic volcanic rocks of the Pacific Northwest Volcanic Aquifer System study area
Sherrod, David R. dsherrod@usgs.gov,Keith, Mackenzie K. mkeith@usgs.gov. GIS database and discussion for the distribution, composition, and age of Cenozoic volcanic rocks of the Pacific Northwest Volcanic Aquifer System study area. 2018-01-01.