Geology Experience - Darrel Dunn, Ph.D., PG

Table of Contents

Unaffiliated Senior Geologist and Hydrologist, Colorado Springs, Colorado.

Wyoming Registered Professional Geology License PG-679.

Email:  ddunn@dunnhydrogeo.com.  Inquiries are welcome.

Geologic Employment

Previous geology work experience includes:

• Independent consulting geologist.

• University teaching at assistant and associate professor levels

• Petroleum geologist for a major oil company

To see hydrogeology experience, press the button 🔳.

Places of Geologic Work

Performed geologic (non-hydrologic) work in the following states and provinces:

• Colorado

• Wyoming

• Montana

• Nebraska

• Nevada

• Illinois

• Indiana

• Louisiana

• Texas

• Saskatchewan, Canada

• Alberta, Canada

Types of Geologic Work

The following content shows types of geology work that I have done, with one or more examples for each type.   The list is not exhaustive and the examples are not all-inclusive.

Petroleum Exploration

• • Explored for petroleum in Colorado (Denver-Julesburg Basin, NW Colorado, Colorado Plateau), Wyoming (DJ Basin), Utah, Nevada, Illinois, Saskatchewan, and Alberta for a major oil company.  This work included well log interpretation, surface and subsurface geologic mapping, stratigraphy, hydrodynamic analysis of petroleum systems, and well site operations.

Petroleum Reservoir Analysis

• Reservoir mapping, DST pressure analysis, reserve calculations, interpretation of sloping oil-water contacts.

Earthquake Hazard

• • Assessed earthquake hazard at a proposed mine site (Montana).

Slope Stability and Landslide Hazard

• • Estimated slope stability at proposed real estate subdivisions (Montana).

  • Served as expert witness on the effect of irrigation on landsliding and testified in court (Montana).

  • Assessed the stability of slopes near a proposed mine in a mountainous area (Montana).

Snow Avalanche Hazard

• • Assessed snow avalanche hazard along an access road at a proposed mine in a mountain valley (Montana).

Coal Resource Assessment

• Assessed value of coal resources on a ranch (Montana).

Environmental Geology

• Environmental compliance assessment of coal company properties (Louisiana, Texas).

Mining Geology

Performed the geologic parts of an environmental assessment for a subsurface platinum/palladium mine (slope stability, earthquake hazard, snow avalanche hazard.

Performed a coal resource assessment on a ranch in Montana.

Statistics in Geology

• • Performed statistical analyses of stable isotope data on methane from different geological provinces in California. Press the button 🔳 to see "California Methane Stable Isotope Data Analysis."

  • Published paper on "Probability of Anomalies on Contour Maps." 

  • Performed a statistical analysis to see if sub-species of a fossil species were significantly different. (Honors thesis for geology bachelors degree.)

International Experience

• Petroleum exploration in Saskatchewan and Alberta, Canada.

University Teaching - Geology

University of Toledo, Toledo, Ohio (Associate Professor)

• Environmental Geology

• Geomorphology

• Geology for Engineers

Montana State University, Bozeman, Montana (Assistant Professor)

• Historical Geology

University of Illinois, Champaigne/Urbana (Instructor)

• Stratigraphy Laboratory

• Historical Geology Laboratory

Contract Teaching

• Geology for High School Teachers (Summer course)