STATEMAP is a matching fund program whereby State general funds are matched one-to-one with federal funds to support geologic mapping by the states.
In this article, we present some of the highlights of the geological exploration of Arizona, focused on the role of early surveys by the U.S. Government and later geologic studies by the USGS and the AZGS and its predecessors.
A brief review of the significance of Arizona geology in development of concepts associated with these features, presented in commemoration of the 125th anniversary of the Arizona Geological Survey and its predecessors.
Seven new geologic maps, currently in drafting but otherwise complete, represent the products of the 2011-2012 field season.
The National Geologic Mapping Act of 1992 established the STATEMAP program to expedite production of geologic maps for the Nation.
Arizona’s Grand Canyon reveals an enormous sequence of rocks that represent more than a third of the 4.5-billion-year age of the Earth. The canyon itself, however, is quite young in comparison, with most or all canyon incision occurring over the past 5 million years according to most interpretations.