THE COMPLETED DYNAMIC DIGITAL MAP OF THE SPRINGERVILLE FIELD, IN EAST-CENTRAL ARIZONA: THE PERFECT COMPLIMENT TO MAGMATIC MAPPING

The recent EDMAP-funded efforts in 2010 and 2011 resulted in the completion of the mapping of the Springerville Volcanic Field (SVF), a 3000 km²field, located in east-central Arizona, work that began in 1978 and had a 31 year hiatus. These rocks comprise arguably one of the best-characterized continental monogenetic volcanic fields in the world. The paradigm used, of magmatic mapping, focuses on the delineation of distinct magmatic units, each representing a volcanic product erupted at a moment in time. The production of such detailed mapping as a Dynamic Digital Map (Condit, 2010) compliments and maximizes the display of this effort. Data from each of the 515 documented units form the framework for how this map is organized. Each unit description, hyperlinked to its symbol on the nine thematic map types, also includes sample numbers for all analyzed data, which is in turn linked to its supportive analytical data. These sample numbers when displayed in their respective Unit Description Palette window, can in turn be used to locate their sample sites on maps and on images of those sites or samples. Text documents, shown in their own floating palette windows, include an enhanced version of the map text, originally included as a pamphlet in the USGS MI Map I-2431 (Condit and others, 1999), a 1989 IAVCEI field trip guide and a NMGS field trip guide (Crumpler and others, 1994). Additional text documents include both Image and Figure captions; all text documents can be displayed at three different levels of scientific depth or complexity, any one of which can be viewed at time, as set by a viewer’s choice in the Preferences Setting Palette of the DDM.

The 515 flow fields are displayed in four basic thematic map types, on 1: 100K topo bases, with each of the four having a second variant underlain by a shaded topographic background. In the first, each unit is classified in one of thirteen distinct lithologic classes, ranging from mafic, or olivine-pyroxene phenocryst bearing to felsic lithology, dominated by feldspar phenocyrsts. In the second, each unit is placed in one of nine geochemical classes. Paleomagnetic samples are included on the magnetopolarity map, with the last breaks the units into five age classes dominated by flows in the four younger (2.14 to 0.3 Ma) age groups. These maps are augmented by over 300 images, movies and animations.