Tuesday, January 10, 2017

4 New Geologic Map Quadrangles in Arizona

Map showing approximate location of maps
AZGS just released four (4) new geologic map quadrangles for western and southeastern AZ, (see map for approximate locations). The maps are free to download at our online document repository - 'Recent Submissions' at http://repository.azgs.az.gov/ (bottom of the page).

The Corona de Tucson map includes the northern portion of the Santa Rita Mountains, an area of interest to the copper mineralization industry.

1. Geologic map of the Dome Rock Mountains SW 7 ½' Quadrangle, La Paz County, Arizona

2. Geologic map of the Mule Wash 7 ½' Quadrangle, La Paz County, Arizona and Riverside County, California

3. Geologic map of the Mount Nutt 7½' Quadrangle, Mohave County, Arizona.

4. Geologic map of the Corona de Tucson 7 ½' Quadrangle, Pima County, Arizona.

Friday, January 06, 2017

New Leadership at Arizona Geological Survey


Dr. Phil Pearthree
AZGS has a new director and Arizona a new State Geologist. University of Arizona Dean of Science, Dr. Joaquin Ruiz, confirmed that Phil Pearthree, Ph.D., is the new director of the Arizona Geological Survey. As part of his duties, Dr. Pearthree assumes the role of Arizona State Geologist. Phil follows former State Geologist Lee Allison who died tragically in a fall in Aug. 2016.

Phil received his B.S. at Oberlin College, and M.S. and Ph.D. at the University of Arizona. He joined AZGS in 1988 and was chief of the Environmental Geology section for more than a decade. As an AZGS research geologist, Phil has authored or co-authored more than 100 geologic reports and maps over the past 29 years.

In 2013, Phil and two co-authors received the prestigious Kirk Bryan Award from the Geological Society of America’s Quaternary Geology and Geomorphology Division for their report, 'Stratigraphic evidence for the role of lake-spillover in the inception of the lower Colorado River in southern Nevada and western Arizona'.
Dr. Pearthree mapping surficial deposits in the Organ Pipe Cactus National Park