1. Lithologic, age group, magnetopolarity, and geochemical maps of the Springerville volcanic field, east-central Arizona Yale Public content 1999. 2002-06-01T04:00:00Z. 2002-06-01T04:00:00Z. Geological Survey (U.S.). The Survey ; Information Services [distributor]. English. Public. Arizona, Apache County, and Navajo County.