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Jon Spencer
Senior Geologist (Arizona Registered Geologist #34513)

ATTN: Jon Spencer
416 W. Congress St., Suite 100
Tucson, Arizona 85701

Phone: 520-770-3500
DIRECT Line: 520-209-4124
Fax: 520-770-3505



Education (Download Resume/CV Here)

  • B.S., University of California, Santa Cruz
  • Ph.D., Massachusetts Institute of Technology.


"The National Geologic Mapping Act of 1992 was established to expedite production of geologic maps and to create a geologic-map database for the Nation.  The Act established the Statemap program to award funds to state geological surveys on a competitive, matching-fund basis.  Arizona is currently third in total Statemap awards, after two states with much larger state geological surveys and available matching funds. Awarded funds were matched by an equal or greater amount of State funds appropriated to the Arizona Geological Survey. 

My primary responsibility at the Arizona Geological Survey has been to prepare and submit Statemap proposals, supervise contract employees involved in mapping and map and report preparation, manage the Statemap budget, and participate fully in field mapping and map preparation.  Through this joint funding mechanism, the AZGS has released over 100 geologic maps and related reports in the years since 1994."
-Jon Spencer


Jon E. Spencer, Stephen M. Richard, George E. Gehrels, James D. Gleason, and William R. Dickinson, "Age and tectonic setting of the Mesozoic McCoy Mountains Formation in western Arizona, USA," GSA Bulletin; July 2011; v. 123; no. 7-8; p. 1258-1274; Geological Society of America.