field trips
The Local Organizing Committee have arranged three field trips for Sunday, 12 July.
(Note: The previously announced Missouri field trip has been withdrawn from the program.)
Trip 1 – Oregon Coast *CANCELLED*
Trip 2 – Oregon Wine Country *CANCELLED*
Trip 3 – Mt. Hood
If you have any questions about the field trips, please contact Louise Newman.
Field trip 1 – Oregon Coast
Field trip cancelled due to low registration numbers
Field trip 2 – Oregon Wine Country
Field trip cancelled due to low registration numbers
Field trip 3 – Glacial and volcanic Quaternary history of Mt. Hood
Online registration for this field trip is now closed. On site registration will be available
An overview of processes and hazards at an active Cascades volcano, where current climate change and shrinking glaciers possibly may be having an effect on the magnitude and frequency of hazards.
Guide:
Tom Pierson — Research Hydrologist, U.S. Geological Survey Cascades Volcano Observatory in Vancouver
Cost: The cost of this field trip is $80.
Times: This field trip leaves Corvallis at 8 am and returns to Corvallis at 7 pm. There is also the option to be dropped off at the Sheraton Portland Airport Hotel at 5 pm.
Lunch: A box lunch will be provided for a picnic during the day
Requirements: This field trip is suitable for people of all fitness levels. Suitable walking shoes are required.
Field trip stops will include:
- Timberline Lodge, where a short hike out on the Timberline Trail will take us to an overlook from which many of the geologic and glacial features of the volcano can be seen. The historic lodge will be a great spot to have lunch.
- A 200-year-old dome-collapse pyroclastic flow deposit in the White River valley.
- The impressive deposit from a debris flow that was triggered by heavy rain in Nov. 2006. This event has contributed to the debate on whether climate change is increasing geomorphic hazards in the Cascades.
- The deposit of a catastrophic prehistoric lahar from Mount Hood that crossed and undoubtedly dammed the Columbia River. |
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Mount Hood is considered an active volcano, having had its last magmatic eruption in the late 18th century, just before the arrival of Lewis and Clark, which was followed by minor steam(?) explosions until 1907. The present edifice is composed chiefly of lavas younger than 200 ka but ancestral volcanoes at this location have been active for about 1.5 Ma. Its glaciers and snowfields (now shrinking) play an important role in Hood’s volcanic hazards during eruptions and may also play a role during noneruptive periods. Mount Hood has active fumaroles near its summit and earthquake swarms occur with some regularity beneath the volcano.
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FIELD TRIP REGISTRATION DEADLINE: 15 June 2009
Note: If minimum numbers are not reached and a field trip needs to be cancelled, a full refund will be granted.
If you have any questions about the field trips, please contact Louise Newman.
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