Presentation by Tyler Thompson on the enormous floods from sudden draining of periglacial lakes at the end of the Ice Age.

Presentation on Michigan Puddingstone (also called Drummond Island Puddingstone) by Tyler Thompson.

2013 presentation by Tyler Thompson on the chemical composition and crystal structure of minerals, explaining how to interpret the empirical formulas, the concept of a solid solution (which allows a range of elements in a single mineral with the same crystal structure), and related topics.

Slides from presentation by members Tyler & Paula Thompson on their visit to Devils Tower National Monument, Wyoming, with discussion of the geology of the feature and surrounding area.

Presentation by members Tyler and Paula Thompson on their visit to Devils Tower National Monument, Wyoming, with discussion of the geology of the feature and surrounding area.  Part 1 of 3

Presentation by members Tyler & Paula Thompson on their visit to Devils Tower National Monument, Wyoming, with discussion of the geology of the feature and surrounding area.  Part 2 of 3.

Presentation Nov. 4, 2014 by member Tyler Thompson on his and Paula's visit to southwest Oregon and northwest California to explore the Josephine Ophiolite and the endemic carnivorous plant Darlingtonia californica that thrives on its unique serpentine soil.  Part 1 of 3.

Presentation Nov. 4, 2014 by member Tyler Thompson on his and Paula's visit to southwest Oregon and northwest California to explore the Josephine Ophiolite and the endemic carnivorous plant Darlingtonia californica that thrives on its unique serpentine soil.  Part 2 of 3.

Presentation Nov. 4, 2014 by member Tyler Thompson on his and Paula's visit to southwest Oregon and northwest California to explore the Josephine Ophiolite and the endemic carnivorous plant Darlingtonia californica that thrives on its unique serpentine soil.  Part 3 of 3.

Presentation January 3, 2017 by club member Tyler B. Thompson on the La Garita Caldera in the San Juan Mountains in south central Colorado.