James H. Trexler, Jr. and Patricia H. Cashman Papers

Identifier: AC 0705

Scope and Contents

The James H. Trexler, Jr. and Patricia H. Cashman Papers contains unpublished technical reports, field notebooks, maps, measured sections, well logs, core sample information, other research materials, and publications of Dr. James H. Trexler, Jr. and Dr. Patricia H. Cashman, both from the UNR Department of Geological Sciences, for their work in Nevada. The materials include information on "Task 8" of the University of Nevada, Reno's Yucca Mountain project on the Nevada Test Site (now the Nevada National Security Site), studies of late Paleozoic rocks in central and eastern Nevada, and studies of Neogene rocks in the Reno area.


  • 1988-2008


Conditions Governing Access

Collection is open for research. Materials must be used on-site; advance notice suggested. Access to parts of this collection may be restricted under provisions of state or federal law.

Biographical / Historical

James "Jim" Hugh Trexler, Jr. was born on July 21, 1946, in Washington, D.C., and grew up in Oxon Hill, Maryland. Trexler was a passionate outdoorsman, an Eagle Scout, and professionally a geologist who studied sedimentary rocks. After serving as a trumpet player in the United States Navy Band, Trexler attended the University of Maryland (B.S., 1974), the University of Oklahoma (M.S., 1976), and the University of Washington (Ph.D., 1984). Trexler worked for the U.S. Geological Survey for three years between his Master's and Doctorate degrees and taught at Weber State University in Utah. Trexler died after a 15-year battle with cancer on May 15, 2017.

Patricia Hughes Cashman was born on October 9, 1950. She received her B.A. in Geology from Middlebury College in 1972 and her Ph.D. from the University of Southern California in 1979. Cashman and Trexler met at Weber State University, where they were both geology professors.

Cashman and Trexler moved to Reno in 1987 to take positions as Associate Research Professors of Geology in the Department of Geological Sciences and Engineering. Together, Cashman and Trexler published dozens of articles on sedimentary geology in Nevada and led research projects at the Nevada National Security Site (formerly the Nevada Test Site). Trexler taught at UNR for 31 years until his passing. Cashman is an Emeritus faculty.

[Information on Trexler taken from his obituary, accessed November 15, 2022. Information on Cashman assembled from a variety of sources including her CV and email correspondence with the department.]


2.21 Linear Feet (4 boxes, 1 oversize folder)

Language of Materials



James H. Trexler and Patricia H. Cashman were Geology professors in University of Nevada, Reno Department of Geological Sciences. The collection contains unpublished and final reports, field notebooks, maps, measured sections, well logs, core sample information, and other research materials related to Nevada compiled by Trexler and Cashman on their geological work at the Nevada Test Site (now the Nevada National Security Site) and Yucca Mountain.


Arranged into the following series: 1) Nevada Test Site/Yucca Mountain "Task 8"; 2) USGS Groundwater Flow, Nevada National Security Site; 3) Other Projects

Immediate Source of Acquisition

Donated by Patricia H. Cashman in June 2022.

Processing Information

Collection was processed using standard archival methods. Additionally, spiral bindings on materials were removed for preservation purposes.



Guide to the James H. Trexler, Jr. and Patricia H. Cashman Papers
Jessica Maddox
November 2022
Description rules
Describing Archives: A Content Standard
Language of description
Script of description

Repository Details

Part of the University of Nevada, Reno. University Archives Repository

Mathewson-IGT Knowledge Center
1664 N. Virginia St.
University of Nevada, Reno
Reno NV 89557-0322 USA
775-682-5724 (Fax)