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Bainbridge Prepares: “The Geological Formation of Bainbridge Island”.
September 27, 2017 @ 5:30 pm - 8:00 pm
Bainbridge Prepares Film Discussion: “The Geological Formation of Bainbridge Island”. Parts I, II, and the World Premier of Part III
First Showing: Doors open at 5:30 PM Film and Q&A 6:00 to 8:30 PM.
Second Showing: Doors Open at 6:30 PM Film and Q&A 7:00 to 9:30 PM.
Register for tickets for the 6pm showing here.
Register for tickets for the 7pm showing here.
Location: Bainbridge Cinemas (and a special thank you for their generosity with their theater and assistance to our filmmakers!)
Run Time 1 hour 45 minutes
Synopsis
A geologist finds clues to big events on a small island. Evidence in the rocks reveals underwater landslides, volcanism, faults and earthquakes that continue to shape the landscape.
Part One: The Oldest Rocks Form the Base
The story begins on Bainbridge Island, a small island west of Seattle. Geologist Gregory Geehan leads us into the deep past to find the oldest rocks on the island. They began as sediment, under the sea. Once buried thousands of feet, we now find them raised to the surface, bent, tilted, deformed. They provide evidence of uplift on the Seattle Fault.
Part Two: Earthquakes and Faults Deform the Base
Next, we look for clues in the surrounding region for the cause of such upheaval. Tremendous seismic activity comes to light on the nearby Pacific Coast. The seafloor has been pushed up into the Olympic Mountains. Areas of salt-killed trees ranging from Canada to California reveal a magnitude 9 subduction zone earthquake 300 years ago. Tectonic movement on the San Andreas Fault in California adds a further twist to the forces that have tilted thousands of feet of rock in the Seattle area… and have given Bainbridge Island an irregular shape.
NEW Part Three: Glaciers Advance into the Puget Lowland and Transform the Landscape NEW
We learn to decipher the layers exposed in the shoreline bluffs. They reveal that glaciers have come and gone repeatedly, leaving material from northern mountains, carving channels and changing the landscape with each advance and retreat. Between glacial periods, rivers from the heights washed material into the lowland, adding to the accumulation of sediment. These alternating layers influence landslides and control the distribution of our aquifers.
More at: https://bainbridgeprepares.org/day-1-2/.