Figure 1.  Footprint of completed, in-draft form, and pending (2011) STATEMAP geologic map quadrangles.

status of the arizona state map program
JON SPENCER, AZGS SENIOR GEOLOGIST

The National Geologic Mapping Act of 1992 created the STATEMAP program, which funds geologic mapping by state geological surveys.  The objective of the STATEMAP program is to determine “the geologic framework of areas” where new understanding is “vital to the economic, social, or scientific welfare of individual States.”  STATEMAP is a matching-fund program in which each state must provide funding equal to or more than the Federal contribution.  The Arizona Geological Survey has obtained slightly over three million dollars in Federal funding from this program, and is fifth among all states in total funding acquired.

Most Arizona STATEMAP mapping has been done in the Phoenix-Tucson metropolitan corridor, which includes approximately 80% of Arizona’s population on 20% of its land (Fig. 1).  In recent years mapping has been directed at outlying areas (Fig. 1; Table 1) because mapping is largely complete in the Phoenix-Tucson corridor and because of issues related to groundwater in outlying areas.  Recent and planned mapping includes the following: (1) Mapping in the northern Santa Rita Mountains and adjacent areas southeast of Tucson intended to provide a better geologic framework for understanding the groundwater hydrology around the proposed Rosemont mine site. (2) Mapping in northwestern Mohave County intended to provide a better geologic framework for understanding geologic hazards and groundwater resources in an area where distant suburban growth is expected when this area is linked to Las Vegas by a new bridge over the Colorado River (the Hoover Dam bypass). (3) Mapping in the Prescott area intended to provide a better geologic framework for evaluating geologic hazards and groundwater resources. Recent mapping identified a previously unrecognized Quaternary fault in Little Chino Valley. 

TABLE 1. RECENT AND PLANNED ARIZONA STATEMAP MAP PRODUCTS

STATEMAP 2010-2011 (Planned) (Prescott – Detrital Valley - Florence)

Geologic map of the Jerome Canyon 7 ½' Quadrangle, Yavapai County, Arizona:  Arizona Geological Survey Digital Geologic Map, scale 1:24,000. 
Geologic map of the Chino Valley South 7 ½' Quadrangle, Yavapai County, Arizona:  Arizona Geological Survey Digital Geologic Map, scale 1:24,000.
Geologic map of the Prescott Valley North 7 ½' Quadrangle, Yavapai County, Arizona:  Arizona Geological Survey Digital Geologic Map, scale 1:24,000.
Geologic map of the White Hills West 7 ½' Quadrangle, Mohave County, Arizona:  Arizona Geological Survey Digital Geologic Map, scale 1:24,000.
Geologic map of the Middle Water Spring 7 ½' Quadrangle, Mohave County, Arizona:  Arizona Geological Survey Digital Geologic Map, scale 1:24,000.
Geologic map of the Cactus Forest 7 ½' Quadrangle, Pinal County, Arizona:  Arizona Geological Survey Digital Geologic Map, scale 1:24,000.

STATEMAP 2009-2010 (In preparation) (Big Chino – Yuma – Happy Valley)
(Award Number  G09AC00199)

Geologic map of the Yuma East 7 ½' Quadrangle, Yuma County, Arizona: Arizona Geological Survey Digital Geologic Map, scale 1:24,000.
Geologic map of the Yuma SE 7 ½' Quadrangle, Yuma County, Arizona: Arizona Geological Survey Digital Geologic Map, scale 1:24,000.
Geologic map of the Somerton 7 ½' Quadrangle, Yuma County, Arizona: Arizona Geological Survey Digital Geologic Map, scale 1:24,000.
Geologic map of the Wineglass Ranch 7 ½' Quadrangle, Yavapai County, Arizona: Arizona Geological Survey Digital Geologic Map, scale 1:24,000.
Geologic map of the Paulden 7 ½' Quadrangle, Yavapai County, Arizona: Arizona Geological Survey Digital Geologic Map, scale 1:24,000.
Geologic map of the Happy Valley 7 ½' Quadrangle, Cochise and Pima Counties, Arizona: Arizona Geological Survey Digital Geologic Map, scale 1:24,000.

STATEMAP 2008-2009 (In drafting) (Empire – Chino – Dolan)
(Award Number  08HQAG0093) (OFR maps are available, DGM maps are in drafting)

Ferguson, C.A., Johnson, B.J., Pearthree, P.A., Spencer, J.E., Shipman, T.C., and Cook, J.P., 2009, Geologic map of the Helvetia 7 ½' Quadrangle, Pima County, Arizona:  Arizona Geological Survey Open-File Report 09-06, version 1.0, scale 1:24,000.
Ferguson, C.A., 2009, Bedrock geologic map of the Empire Ranch 7 ½' Quadrangle, Pima County, Arizona:  Arizona Geological Survey Open-File Report 09-05, version 1.0, scale 1:24,000.
Ferguson, C.A., 2009, Bedrock geologic map of the Empire Ranch 7 ½' Quadrangle, Pima County, Arizona:  Arizona Geological Survey Digital Geologic Map DGM-78A, scale 1:24,000.
Ferguson, C.A., Johnson, B.J., Pearthree, P.A., Spencer, J.E., Shipman, T.C., and Cook, J.P., 2009, Geologic map of the Helvetia 7 ½' Quadrangle, Pima County, Arizona:  Arizona Geological Survey Digital Geologic Map DGM-77, scale 1:24,000.
Cook, J.P., 2009, Surficial geologic map of the Empire Ranch 7 ½' Quadrangle, Pima County, Arizona:  Arizona Geological Survey Digital Geologic Map DGM-78B, scale 1:24,000.
Spencer, J.E., Youberg, A., Ferguson, C.A., and Shipman, T.C., 2009, Geologic map of the Spring Water Canyon 7 ½' Quadrangle Pima County, Arizona:  Arizona Geological Survey Digital Geologic Map DGM-79, scale 1:24,000.
Gootee, B.F., Ferguson, C.A., Spencer, J.E., and Cook, J.P., 2009, Geologic map of the Chino Valley North 7 ½' Quadrangle, Yavapai County, Arizona:  Arizona Geological Survey Digital Geologic Map DGM-80, scale 1:24,000.
Pearthree, P.A., Ferguson, C.A., and Spencer, J.E., 2009, Geologic map of the Dolan Spring 7 ½' Quadrangle, Mohave County, Arizona:  Arizona Geological Survey Digital Geologic Map DGM-81, scale 1:24,000.

STATEMAP 2007-2008 (Complete) – lower San Pedro and NW Mohave County 
(Award Number 07HQAG0110)

Young, J.J., Spencer, J.E., MacFarlane, B.J., and Richard, S.M., 2009, Geologic map of the Lookout Mountain 7 ½' Quadrangle, Pinal County, Arizona:  Arizona Geological Survey Digital Geologic Map DGM-66, scale 1:24,000.
Spencer, J.E., Gootee, B.F., Richard, S.M., and Cook, J.P., 2009, Geologic map of the Mammoth 7 ½' Quadrangle, Pinal County, Arizona:  Arizona Geological Survey Digital Geologic Map DGM-67, scale 1:24,000.
Gootee, B.F., Spencer, J.E., Ferguson, C.A., Richard, S.M., Cook, J.P., and MacFarlane, B.J., 2009, Geologic map of the Clark Ranch 7 ½' Quadrangle and the west half of the Rhodes Peak 7 ½' Quadrangle, Pinal and Graham Counties, Arizona:  Arizona Geological Survey Digital Geologic Map DGM-68, scale 1:24,000.
Pearthree, P.A., Cook, J.P., Skotnicki, S.J., and Spencer, J.E., 2009, Geologic map of the Peppersauce Wash 7 ½' Quadrangle and part of the Kielberg Canyon 7 ½' Quadrangle, Pinal and Pima Counties, Arizona: Arizona Geological Survey Digital Geologic Map DGM-69, scale 1:24,000.
Ferguson, C.A., Johnson, B.J., Pearthree, P.A., and Spencer, J.E., 2009, Geologic map of the Grasshopper Junction 7 ½' Quadrangle, Mohave County, Arizona:  Arizona Geological Survey Digital Geologic Map DGM-70, scale 1:24,000.

 

 

ARTICLE AUTHOR:
Jon Spencer
SENIOR GEOLOGIST

Arizona Geological Survey
jon.spencer@azgs.az.gov

















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