Peak Ice on Moses Mountain? September 23, 2019 Cordilleran ice sheet glacier ice age Moses Mountain nunatak Okanogan Highlands Okanogan lobe +
Totally Lunar! The Eclipse on Sunday Night, January 20, 2019 January 22, 2019 eclipse lunar penumbra refraction super blood wolf moon umbra +
Satellites at Bennu and "Ultima Thule" January 03, 2019 Apollo asteroid asteroid asteroid belt dwarf planet KBO Kuiper Belt object near-Earth asteroid New Horizons Nile Valley satellite Ultima Thule +
The Geology of the Okanogan Region! March 22, 2018 accretion Challis arc Challis volcanics detachment fault graben Laurentia metamorphic core complex Okanogan Okanogan lobe plate tectonics Quesnellia terrane +
Geologic Hazards on Whidbey Island February 21, 2018 active fault Chuckanut sandstone earthquake geologic hazards field trip glaciation landslide liquefaction Northwest Geological Society Puget Sound tsunami Whidbey Island +