AEG Monthly Meeting—Thursday, March 12 Association of Environmental & Engineering Geologists


Speaker: Stephen Dickenson, Adjunct Research Faculty, Nevada Seismological Laboratory, UNR

Topic: Post-Earthquake Forensic Investigations of Soil-Structure Interaction:  A Sleuth’s Guide to Seismological, Geological, and Geotechnical Clues 

Abstract: This presentation will focus on lessons learned from field observations and forensic evaluations of building foundations made by Dr. Dickenson and his colleagues at sites in Wellington, New Zealand following the 2016 Mw 7.8 Kaikoura Earthquake. An overview will be provided that addresses seismological aspects of the strong ground motions recorded at the project sites and the significant impact of local geology on the strength of the ground shaking. This overview will lead into the case study of seismic performance of a five-story, pile-supported building, which was built in 2009, well instrumented with accelerometers, and had been subjected to two prior Mw 6.5 earthquakes. The project team was charged with evaluating the likelihood of significant damage to the pile foundations; a forensic investigation that required thorough seismological, geological, and geotechnical evaluation.

Biography: Stephen Dickenson is the President of New Albion Geotechnical, Inc., a consultancy specializing in geotechnical earthquake engineering applications for major civil works. Dr. Dickenson’s consulting, research, and post-earthquake reconnaissance efforts have primarily focused on dynamic soil-structure-interaction and the seismic performance of slopes and earth structures, earth retention systems, bridges, port and coastal facilities, and buildings. He has led, and supported, numerous investigations of the seismic performance of civil infrastructure involving development on weak soils, deep foundations and buried utilities subjected to ground failure, and the effectiveness of ground treatment for mitigating hazards.

Dr. Dickenson earned his Bachelor’s degree in Geology from the University of California, Berkeley, his Master’s Degree in Civil Engineering from Virginia Tech, and his Doctorate in Civil Engineering from the University of California, Berkeley. He is a licensed Civil Engineer (CA, NV, OR, WA) and board-certified Diplomate in Port Engineering (ACOPNE D. PE) with over 30 years of experience in consulting practice, academia, applied research, and development of continuing education for geo-professionals. He has resided in numerous places along a circuitous path from the San Francisco Bay Area to the Pacific Northwest, and now makes his home in Reno where he enjoys all of the outdoor time he can get.



This month we will be serving corned beef, salad, and key lime pie. On the RSVP, please indicate if you have a dietary restriction such as vegan, vegetarian or gluten free options.

NPGS Monthly Dinner Meeting—Thursday, Sept 5

Speaker: Dave Browning, TerraCore
Topic: Hyperspectral Core Imaging: Applications in Unravelling Deposit and Reservoir Mineralogy

Abstract: Hyperspectral core imaging is a passive and non-destructive spectroscopic method for identifying and mapping mineralogy in drill-cores and cuttings. Hyperspectral data is available across the Visible-Near-Infrared (VNIR; 350-1000nm), Short-Wave Infrared (SWIR; 1000-2500nm), and Long-Wave Infrared (LWIR; 7500-12000nm) regions. The information obtained allows for representative quantification of mineralogy across intervals, providing a reliable, consistent and objective record that is directly applicable to reservoir characterization. Hyperspectral core imaging also allows for the observation of mineralogical and textural properties which are not visually detectable, such as chemistry changes and grain size detection (i.e. sediment vs. cement). The rich dataset provided by hyperspectral imaging provides insight into conventional and unconventional resources, aiding the geologists in the understanding of their reservoir. The spectral data is collected by utilizing a core imaging workstation that combines a long-wave infrared (LWIR) hyperspectral camera with a SWIR hyperspectral camera and a high resolution RGB line scan camera. Several case studies will be presented demonstrating the importance of hyperspectral core imaging for petroleum and geothermal applications and how it can be utilized in conjunction with other datasets to better understand deposit and reservoir mineralogy.

Bio: Dave Browning has worked with hyperspectral data sets for over ten years, starting with utilizing spectroscopy as an exploration tool in Northeastern Nevada. He received a Master of Science degree from the University of Idaho, Moscow, for his thesis focused on ammonium bearing minerals and their ability to aid in regional exploration campaigns. As an exploration geologist he has designed and led several exploration campaigns focused in Nevada. Since joining TerraCore in 2014 he has been a lead geologist on projects of varying deposit types and industries across North America, from exploration through to production.

Nevada Petroleum and Geothermal Society (NPGS)
September 2019 NPGS Meeting
Date: Sept. 5 2019, 06:30 PM to 09:30 PM
Location: Tamarack Junction, Reno, Nevada
Event information.

NPGS Monthly Dinner Meeting—October 5—RSVP by Tues October 3:

Nevada Petroleum and Geothermal Society Monthly Dinner Meeting
SPEAKER:  Chris Ellis, VP & General Manager, Coso Operating Co., LLC
TOPIC:  Coso Geothermal Power Plant
DATE:  Thursday, October 5, 2017

ABSTRACT:  Brief geothermal introduction with an overview of the Coso facility, including a discussion of some of the issues, problems and solutions that have been encountered and managed.

BIOGRAPHY:  Christopher Ellis is Vice President and General Manager for Coso Operating Company, has been at the Coso Project since 1988.  During his tenure, he has held various positions with the company encompassing all aspects of facility operations, maintenance, construction, and administration.  He was directly involved in the start-up on eight of the nine power plants at Coso.  He obtained his formal training and education in the US Navy’s Nuclear Power Program after attending the University of Arizona.

He currently serves as President for the Boards of the Lone Pine Chamber of Commerce and The Geothermal (a non-profit fund raising organization), and is a board member of the East Kern Air Pollution Control District Hearing Board, Indian Wells Valley Economic Development Corporation and The Ridgecrest Regional Hospital.

Tamarack Junction
13101 S. Virginia St.
Reno, NV 89511
(775) 852-3600

Cocktail Reception 6:30 PM; Dinner Served at 7:00 PM
NPGS Members $20; Non-Members $23; Students $10

Thank you to our contributing sponsors for the dinner and cocktail reception: Premier Oilfield Service and Sinclair Well Products and Services.

RSVP is very important for an accurate count at this new venue.

Please RSVP with the following link by Tuesday, October 3:

If you find that you cannot attend, please email Vicki Ehni at or call at 775-720-6387.
NPGS will be charged for no-shows. Thank you for your consideration.