GSA Seattle 2017

Seattle 2017 GSA workshop
Applied Geochemical Reaction Modeling
Seattle, Washington USA • 20-21 October 2017

Register nowPlease join us on the shores of Lake Union in caffeinated, intoxicating Seattle, Washington for two days of hands-on training in applied geochemical reaction modeling. Then stay on in Emerald City, the coffee capital of the world, for the Geological Society of America 2017 Annual Meeting.

What you will learn. Following a fully hands-on format, you will learn to construct, trace, and interpret models of reaction in multi-component geochemical systems. Specific topics covered include:

  • Fluid mixing
  • Multicomponent equilibrium
  • Buffering reactions
  • Reaction, mass transfer kinetics
  • Kd, Freundlich, Langmuir sorption
  • Surface complexation
  • Polythermal reaction and mixing
  • Electrochemistry
  • Microbial catalysis and growth
  • Case studies and examples
  • Effective graphical presentation
  • Creating animation and video

More information? Contact workshop support. Can't come? Consider an alternative from our 2017-2018 workshop lineup.

The perfect mix of lecture, background stories, knowledge, insights, and hands-on software exercises.

– Dean Muirhead, Engineer, Barrios Technology

The execution of the workshop was outstanding! The software itself is great – most of what I need in one place.

– Harsev S., Environmental Engineering Student, USA

I loved the [geochemical modeling] workshop! In the future I would really like to take the reactive transport course.

– Ryan Davis, Colorado State University


The workshop will be presented by Brian Farrell, Melika Sharifi, and Jenny Druhan. Brian and Melika are Geochemists at Aqueous Solutions LLC, maker of The Geochemist's Workbench®.

Brian Farrell
Brian Farrell

Jenny Druhan
Jenny Druhan
Brian Farrell has many years of experience in developing and applying geochemical and reactive transport models. He is expert in aquifer microbiology, geochemical modeling, and reactive transport in geochemical systems. Brian has taught short courses in North and South America, Europe, Africa, Asia, and Australasia.

Melika Sharifi is an Environmental Scientist with special expertise in Actinide Geochemistry. She has many years of experience as an instructor at the undergraduate and graduate levels, and as an effective mentor in the laboratory to less experienced scientists.

Jenny Druhan is an Assistant Professor of Geology at the University of Illinois. In her research, Jenny develops reactive transport models and constructs experiments to invesigate chemical reactivity and stable isotope fractionation in groundwater flows. Jenny has led successful workshops at several previous Goldschmidt conferences.
Melika Sharifi
Melika Sharifi


Map to workshop venue
Seattle, Washington, USA
20-21 October 2017

The Swedish Club
Viking Room
1920 Dexter Ave. N.
Seattle, WA 98109 USA

Register now

Free parking is available immediately outside the club. The workshop starts at 8:30 am sharp each day and continues to about 5:00 pm.

Please arrive a few minutes early on the first day to set up your workspace. We will wrap up on the second day in time to attend the GSA Icebreaker reception.


Register Now

Space is limited, so sign up early. The registration fee of $699 includes all course materials.

Full-time students currently registered in a university degree program can register at the reduced rate of $599. Please bring current student identification to the workshop.

We are pleased to welcome back participants from our previous workshops at the special price of $599. For fastest verification, please sign up with the email address you used registering for the earlier course.

Each registered participant will receive a free 60-day license to The Geochemist's Workbench® 11 Professional version. We will ask you to bring to the course a laptop with the software installed and running.

Registrations may be transfered to another participant at no charge, and are fully refundable until 30 days before the workshop. Liability in the event of workshop cancellation or other eventuality is limited to refund of the registration fee.

If you wish to continue in Seattle for the GSA 2017 Annual Meeting, you must register for the conference separately.


A number of hotels are located in the general vicinity of the Swedish Club, which overlooks Lake Union, and in the downtown hotel district just to the south. The GSA maintains a list of hotels with negotiated rates for meeting attendees. You may also wish to consider staying at a nearby Airbnb property.


Seattle-Tacoma International Airport is located about 15 miles south of the city center. From there, frequent service on the Central Link light rail line will take you downtown to the hotel district in about 35 minutes for $2.50. You may also reach downtown from the airport by taxi, Uber, or rental car.

The meeting venue is easily accessible from downtown on the RapidRide E Line, which takes you to within a few minutes walk of the Swedish Club for $2.50. As well, free parking is available outside the workshop venue.

Environment and safety

Seattle is considered a clean and for the most part safe city, but travelers everywhere need take precautions to protect themselves and their property.

Upon registration, you will be asked to provide an emergency contact name and telephone number, in the unlikely event of illness or accident, as well as list any special dietary requirements or medical needs.

Waitstaff in restaurants offering table service as well as taxi and shuttle drivers expect a 15% to 20% tip in the United States.

Hosts and sponsors

The workshop is being held thanks to the generous efforts of our hosts and sponsors:

The Geochemist's Workbench University of Illinois Aqueous Solutions