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AEG Oregon Chapter- November Meeting
Old Market Pub
Portland, OR
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AEG Oregon Chapter- November Meeting

Pat will be delving into the multiple uses of dendrochronology in the Pacific Northwest, with examples dating the Old Maid eruption of Mount Hood to late(?)1781, Bonneville landslide (14461447 during dormancy), Electron Mudflow from Mount Rainier (late 1507), and Seattle and Saddle Mountain Faults to 923924. There are many landslide-dammed lakes in Washington, many of which we have radiocarbon ages on and that contain drowned subfossil trees could well be dated with dendrochronology.

Speaker Biography:

Pat taught at Centralia College from 20052017. From 19902005 he was a Research Geologist, WADNR Div. of Geology and Earth Sciences (now Washington Geological Survey), and from 19821990 was with US Geological Survey Cascades Volcano Observatory in the volcanic hazards program. His main areas of study are volcanoes, earthquakes, landslides, and debris flows, which he studies using radiocarbon and tree-ring analysis to establish the history of past geologic events. His publications include published papers, curricula, and books on the roadside geology of Mounts St. Helens and Rainier. He has received several teaching awards including Washington Association of College Trustees Faculty Member of the Year in 2016.


Old Market Pub (View)
6959 SW Multnomah Blvd.
Portland, OR 97223
United States

Timezone: America/Los_Angeles
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