09-20-2019 Pat Pringle: Fall field trip—Geology of Mt. Rainier

Sept. 20-22, 2019:  Mt. Rainier Field Trip

Professor Emeritus Pat Pringle of Centralia College and colleagues led a 3-day trip to the Mount Rainer area to see the geology of this fantastic mountain and its geologic and environmental effects on the surrounding region.  Participants provided their own transportation and lodging (in Ashford and Packwood); we provided field trip log, a published guidebooks, experts on specific aspects of the geology and geomorphology, and a chance to see one of Washington’s three active volcanoes.

The trip started at 11 am Friday at Mud Mountain Dam Park south of Enumclaw.  We made a CCW circumnavigation of Mt. Rainer and ended up on the northeast side on Sunday afternoon, east of Enumclaw. Rain and socked in that day, but good wx for the first two days. Many of the stops were roadside, but we took several 1-2 mile hikes with 300-500  feet of elevation change.  A good time was had by all, and a true value at $50 each.

Dr. Pat Pringle

For more info, you can download the preliminary field trip route and schedule by clicking here. In addition, Pat published a guide to this area that will serve as a more comprehensive resource. Pdfs of the various chapters of the Roadside Geology of Mount Rainier National Park and vicinity, Information Circular 107 (IC-107) as well as pdfs of other publications can be downloaded via links in the Washington Geological Survey’s online catalog.

Go to this link, and then go down to the WGS publications catalog link. This catalog gets updated regularly. Suggestion, it may be easier to download the book as individual chapers, because the entire book is >300 MB.

07-15-2019 Kitty Reed: Fort Worden Geology beach walks

Bluffs at Fort Worden

Beach Walks on July 15 and 31, 2019:  Geology of Fort Worden Bluffs

Kitty Reed describing sedimentary features exposed in the bluffs on the north side of Fort Worden

July 15th and July 31st

Geology group advisors Kitty Reed, Michael Machette, and Keith Norlin led two beach walks along the bluff on the north side of Fort Worden.  These walks took 2-3 hours each and occurred during morning low tides:  July 15, Mon., 9-12; July 31, Wed. 9:30-12:30. We looked at the sediments that record much of the late Pleistocene history of the area, as well as on-going bluff erosion. A fee of $10 per person (paid at time of field trip) was charged to cover our photocopy costs.  Each trip was limited to 15 persons, and registration deadline is a week before each trip. The field trip guide, which is still being updated, can be downloaded as July 2019.

Geology guide of bluff along North Beach Fort Worden.

06-22-2019 Summer Field Trip to Hurricane Ridge

Field Trip June 22, 2019:  Geology of Hurricane Ridge and the Olympic Mountains; Jim Aldrich—Leader

On this one-day field trip we explored the geology of Hurricane Ridge, the Crescent basalt (which holds up the ridge); additional aspects of glaciation, volcanism, metamorphism, etc.,were discussed in addition to the tectonism associated with the Olympics. Our leader was Jim Aldrich, a structural geologist formerly with Los Alamos National Lab in NM, who has been working in the park for several years, pursuing his passion to understand more about his fascinating area inboard of the Cascadia subduction zone.

This trip was road-based with a bit of walking on the road, but nothing strenuous. We meet at the National Park Visitors Center (3002 Mt Angeles Rd, Port Angeles) at 9 am, when it opened.  We’ll formed carpools to minimize the number of cars (5) at roadside stops.  From there, we’ll traveled up to Hurricane Ridge, visited a number of roadcuts to see the Crescent basalt.  Lunch was had on the deck of the Hurricane Ridge Visitors Center.  From there, we drovee to see geologic features along Hurricane Ridge and overview the evolving landscape of this region. We saw how tectonic forces of uplift driven by the subduction zone are balanced by the erosive forces of precipitation (Mt. Olympus gets 260″ annually).

Afterwards, about 10 of the field trippers went to Camaraderie Winery on the west side of Port Angeles, where the owner Don Corson (trained as a geographer) provided a free wine tasting and tour of the winery.  A good time was had by those who came along.

A fee of $10 per person covered printed quidebook materiasl. (Amount reduced at request of Jim Aldrich; he said this was adequate to break even.) We reached our limit of 25 persons, which is controlled my limited parking along the road to Hurricane Ridge. The field trip guide is available by clicking here.