07-18-2015 Michael Machette: Nodule Point field trip

About the Field Trip

FIELD TRIP TO NODULE POINT, MARROWSTONE ISLAND

The Jefferson Land Trust’s Geology Group will lead a walking tour of Nodule Point, which is on the southeastern coast of Marrowstone Island. The trip will be based on a field guide that Dave Tucker of Western Washington University has on his NW Geology Field Trip blog. Please download and read this guide before joining the trip (see registration info to left).

FIELD TRIP: The field trip will be both lay and technically oriented, so although a basic knowledge of geology would help, we’ll have geologists along to explain the features we’ll be seeing and touching. We’ll walk 0.7 miles from E. Marrowstone Road to Nodule Point and then back. You’ll have to be agile enough to get up and down the bluff via a narrow-steep staircase, but the walk is rather easy.

TRIP OVERVIEW: Nodule Point: why it’s there—basalt dike, baked zone, and weathering. Evidence for faulting after dike emplacement. The Scow Bay sandstone, a local building stone Nodules within the sandstone and on the beach. The overlying Vashon (latest Pleistocene) glacial till.

LOGISTICS: When and Where.  Meet by 10:30 am at the home of Greg Lalish, 1101 E. Marrowstone Road. Drive/bike about 600 ft to the east on his access road, where we’ll park on his property. Carpool with others if possible. Then we’ll hike east on Hoyt Road (Private) and drop down to the beach via a private staircase. Bicyclists can go directly to the access point at 501 Hoyt Road (arrive at 11:00 am).

Access: Trip will be along a private road (Hoyt) and through private property. Adults and children over 12 only please, no dogs.
Space: Trip size is limited by parking and staircase access. Max. will be 50 or less. Sign- up for the trip is on a first-come basis, bicyclists get priority (because of parking issues).

No cost, just become an avid supporter of the Jefferson Land Trust. Bring: Wear footgear that protects your ankles. Hat, light jacket, water, bag lunch, camera, notepad, etc. We’ll go no matter what the weather, so be prepared. We’ll eat lunch on the beach.