Posted by: magmatist | March 7, 2014

Geology field trip April 12

West Beach, Deception Pass State Park consists of eroded Pleistocene glacial deposits. Fidalgo Island, across Deception Pass, consists of sea floor rocks accreted to the margin of North America.

West Beach, Deception Pass State Park consists of eroded Pleistocene glacial deposits. Fidalgo Island, across Deception Pass, consists of sea floor rocks accreted to the margin of North America.

Three spaces left.
Register now for MBVRC’s April 12th guided geology field trip, oriented towards a general audience. The all-day trip is a fundraiser for our research and grant program. We will visit a number of outcrops at Deception Pass, Mount Erie, and the Chuckanut Coast. The trip leader is Scott Babcock, geology professor at Western Washington University and coauthor of ‘Hiking Guide to Washington Geology’ (originally published as ‘Hiking Washington’s Geology’). Scott has led geology trips for general audiences in many parts of the world. MBVRC gift certificates may be redeemed for this or any MBVRC field trip.

TRIP COST: the trip is open to each person who makes a minimum $75 tax-deductible donation to MBVRC, until the vans are full. MBVRC will provide van transport and handouts.                   

Ribbon chert deposited in the deep ocean is now exposed at Rosario Head.

Ribbon chert deposited in the deep ocean is now exposed at Rosario Head.

DESCRIPTION: Some really interesting geology is revealed by the landforms and rock outcrops found in the lowlands and foothills of Northwest Washington.  Most of the landscape and deposits of this area are the legacy of the advance of glaciers during the last Ice Age between 21,000 and 13,000 years ago.  However there are also scattered outcrops of bedrock that are millions of years old.  We will begin the trip with some of the youngest glacial deposits on Whidbey Island and work our way back to Bellingham through spectacular exposures of the older bedrock at Deception Pass, Mount Erie and elsewhere on Fidalgo Island, and finish up with younger rocks along Chuckanut Drive. We will inspect sea floor sedimentary rocks, pillow basalts, remnants of an oceanic magma chamber, and 60-million year old flood plain deposits of the Chuckanut Formation. There will be a series of short walks.  The longest will be about a quarter mile along the beach at West Beach in Deception Pass State Park.  The most strenuous will be 1/8 mile to Rosario Head (70′ elevation gain).  There will be other stops at Deception Pass, Mount Erie, and along Chuckanut.

Tilted marine sedimentary rocks at Deception Pass.

Tilted marine sedimentary rocks at Deception Pass.

We will travel in two rental vans, starting from Bellingham; there will be a couple of pick up points along the way if you join us from points south. The trip is open to all ages, and no prior geology is required. However, a basic understanding of plate tectonics, in particular subduction and terrane accretion will be useful.

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this is not a link

Mount Erie rocks were intruded beneath an oceanic volcanic island. Views from the top are spectacular.

Mount Erie rocks were intruded beneath an oceanic volcanic island before accretion to the North America. Views from the top are spectacular. Hope for good weather!

REGISTRATION: Registration is through advance donation to MBVRC. The trip is limited to the first 26 people making payment.

1. Send an email to MBVRC stating your intention to attend. Please put ‘field trip’ in the subject line of your message. You will receive payment information, and can pay through PayPal or personal check. If you have a gift certificate, let us know.

2. Trip confirmation is in order of contribution received.

MORE FIELD TRIPS will be offered later in the year, including Mount Baker hikes. Stay informed by taking out an email subscription to this blog using the subscription box at right.

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Responses

  1. Reblogged this on Northwest Geology Field Trips.


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