UPCOMING EVENTS
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VIDEOS OF PAST EVENTS
We video-record these lectures for later viewing (see the Events > Past Events Videos on home page menu).
Click title or photo to see description of events and speakers background
2025-04-12 Dan Muhs – Tectonic Uplift in the Pacific Northwest
The Lecture Subduction-related late Quaternary tectonic uplift and sea-level change in the Pacific NW and around the Pacific Rim Quimper Geological Society welcomes Dan Muhs, an emeritus USGS geologist will provide marine terraces as evidence of tectonic uplift along the Pacific Ocean plate. In 1979, Seiya Uyeda and Hiroo Kanamori introduced a tectonic model with two end members of a subduction-boundary continuum: the “Chilean” type (shallow dip of the subducting plate, great thrust events, compression, and uplift of the overriding plate) and the “Mariana” type (steep dip of the subducting plate, no great thrust events, tension, and little or no… Read more2025-04-12 Dan Muhs – Tectonic Uplift in the Pacific Northwest
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2025-05-03 Leigh Tucker and Marquis Richardson – Where are the Olympic Coast garnet sands coming from and how did they get there?
Quimper Geological Society welcomes Leigh Tucker Marquis Richardson to lecture on garnet in beach sands of the Olympic Coast. Lecture Where are the Olympic Coast garnet sands coming from and how did they get there? Washington State contains multiple beaches where garnet bearing sands are present, including the outer coast and within Puget Sound. The source of these garnets is unclear. To better understand where these garnets come from, we look inside them to investigate inclusion minerals. When garnets form in metamorphic environments, they can trap other minerals from their surroundings. These trapped minerals can give us pressure and temperature… Read more2025-05-03 Leigh Tucker and Marquis Richardson – Where are the Olympic Coast garnet sands coming from and how did they get there?
0 comments
2025-04-12 Dan Muhs – Tectonic Uplift in the Pacific Northwest
The Lecture Subduction-related late Quaternary tectonic uplift and sea-level change in the Pacific NW and around the Pacific Rim Quimper Geological Society welcomes Dan Muhs, an emeritus USGS geologist will provide marine terraces as evidence of tectonic uplift along the Pacific Ocean plate. In 1979, Seiya Uyeda and Hiroo Kanamori introduced a tectonic model with two end members of a subduction-boundary continuum: the “Chilean” type (shallow dip of the subducting plate, great thrust events, compression, and uplift of the overriding plate) and the “Mariana” type (steep dip of the subducting plate, no great thrust events, tension, and little or no… Read more2025-04-12 Dan Muhs – Tectonic Uplift in the Pacific Northwest
2025-05-03 Leigh Tucker and Marquis Richardson – Where are the Olympic Coast garnet sands coming from and how did they get there?
Quimper Geological Society welcomes Leigh Tucker Marquis Richardson to lecture on garnet in beach sands of the Olympic Coast. Lecture Where are the Olympic Coast garnet sands coming from and how did they get there? Washington State contains multiple beaches where garnet bearing sands are present, including the outer coast and within Puget Sound. The source of these garnets is unclear. To better understand where these garnets come from, we look inside them to investigate inclusion minerals. When garnets form in metamorphic environments, they can trap other minerals from their surroundings. These trapped minerals can give us pressure and temperature… Read more2025-05-03 Leigh Tucker and Marquis Richardson – Where are the Olympic Coast garnet sands coming from and how did they get there?
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ABOUT US
Our goal is to foster an understanding of Earth Science concepts by offering 5-8 illustrated lectures during the academic year and one or two summer field trips. We focus mainly, but not exclusively, on local and regional geologic features and issues (see yearly list under events). Membership and events are FREE and open to the public, although we gratefully accept donations to defray our expenses. QGS is an earth-science activity of the Jefferson Land Trust, which is located in Port Townsend, WA. We are in our 10th year here on the Quimper Peninsula.
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