LavaDetails15

Keweenaw Geoheritage Field/Boat Trip--
July 22, 2019

Lavas and the Keweenaw Rift
This trip is to see some of and to begin to understand the Keweenaw’s black rocks and its deep-Earth-volcanism past. It is the site of Earth’s largest lava outpourings. Magma oceans existed here. We will see the huge lava flows and how they shape and influence the peninsula.
Highlights of the trip include: The Great lava reefs and shipwrecks of the Eagle Harbor to Manitou Island shore, The Greenstone Flow (Earth’s Largest) and its anatomy, Copper and lavas--how do they relate? Manitou Island and the Lake Shore Traps, Click on Green words below for more content.

What’s included: Van and Boat transport and simple lunch. No overnight costs covered. Vans may be joined in Houghton one hour before the meeting time and transport back to Houghton from the end point each day is available to those who want/need it.

Visiting Experts: Dr Chad Deering
8:30 am: meet at Eagle Harbor Lighthouse Overlook (short walk)
9:30 am: Board Agassiz at Eagle Harbor Marina, visit Agate Harbor via Dipping Reefs. Continue to Manitou Island via Green Rock and Horseshoe Harbor. Dock at Manitou dock, walk to lighthouse (~0.6 mi, flat terrain, rough trail)..
1:30 pm: Field Lunch at Visitor Center in Copper Harbor.
2:30 pm: To Greenstone Flow Pegmatites, (short walk)
3:30 pm: Hunter’s Point (short walk)
4:30 pm: Brockway Mtn Summit. (short walk)
5:30 pm: BBQ in Copper Harbor

What to bring: Several layers for wind and cold conditions, possible rain? But it could be warm also! Strong sneakers or light hikers for shoes. Camera! Good spirits. Questions.

Steve Trynoski