Current Year Schedule
GSM seminars with slide show presentations are free and open to the public. They are presented by leading professionals in their fields and are aimed at learners from high school to adult. A question-and-answer session concludes each seminar. The labs, also free and open to the public, allow a hands-on learning experience and demonstrate the ideas and principles of geology and earth science. Live lectures and labs require no registration; just show up a few minutes early on the evening of the lecture.
Click on date of any seminar for attendance information and other details. For a printable version of our schedule of seminars and labs, click here.
Except as noted, in-person lectures during winter/spring 2026 are Mondays at 7:00 PM CT on the University of Minnesota campus, Keller Hall, Room 3-210. A lecture with (V) following its title is an online virtual lecture. For these, free registration is required by non-members; the instructions are supplied with the lecture description.
Our schedule is planned over 6 months in advance, so changes may occur. Always check this website shortly before each lecture for the latest seminar information.
Winter weather will come and snow might impact our lectures. The GSM will make any decision about cancelling or postponing a lecture due to inclement weather no later than 3:00 PM the day of the lecture. This information will be posted on the GSM home page (http://www.gsmn.org/). So check our home page shortly before each lecture in case there is a cancellation or a last-minute change. Also, we will e‐mail lecture postponement and cancellation information to our members.
Past seminars marked with * were recorded and the recording is available on the Geological Society of Minnesota YouTube channel. Subscribe to this channel for updates.
Seminar Details
Seminar Lab Date: September 15, 2025
Seminar Lab Subject: Annual Meeting & Beautiful Ohio: Sedimentary Dreams – A Virtual Field Trip
Seminar Lab Presenter: Deborah Naffziger, Geological Society of Minnesota
Seminar Lab Location:
In-person only at University of Minnesota, Keller Hall, Room 3-230
Lecture start time 7:00 PM CT with complimentary cake and bottled water starting at 6:30.
Seminar Lab Detail:
Annual Meeting: Prior to our lecture, we will conduct a short meeting to elect Board members for 2026.
Summary: Beautiful Ohio; Sedimentary Dreams is a virtual field trip to Ohio. I tried organizing a real field trip, covid got in the way and so I am presenting it virtually. Also including a show-and-tell of various items from some sites.
Biography: Deborah Naffziger has a BA in Speech Communication from the University of Minnesota, and a First Class Radiotelephone License from the FCC. Not that it means anything for this lecture. I worked for 33+ years at WCCO-TV as an Engineer, putting TV in your sets in various ways. I took many geology courses at the U, but stopped after the Arab Oil Embargo, because I was not interested in oil exploration. Otherwise I just love geology and keep studying and learning.
