Field trip!

Today was an amazing day weather-wise so we went off on a 140 mile road/field trip to Keweenaw County. Thematically it was linked to both the geology of the area and its early pioneering history. We visited Brockway Mountain and talked about the Portage Lake volcanic series that created the various ridges that run the length of the peninsula. Then we stopped at the Copper Harbor Lighthouse to discuss “cuperiferous” veins and the legendary “Green Rock” that Douglas Houghton discussed in his geologic reports  of the 1840’s. Stops at Eagle Harbor and Eagle River followed to talk about the importance of commercial villages and how they linked the early copper mines (like Cliff) to the outside world. You should have seen the fish in Eagle River lining up to tackle the waterfall there. You could have crossed the river on their backs. Our last stop was at Gay to see the impressive tailings (stamp sands) of the Mohawk and Wolverine mills.

Tomorrow is looking like more mapping exercises on campus followed by a trip to Cliff to lay out our excavation units at the mill. We should be breaking ground early next week.

Dr. Scarlett talking lava at Brockway Mountain.

The students visiting the “Green Rock” of Copper Harbor (They are standing on it. It looks more white than green here).

Dr. Swietz holding an excellent example of how quartz and mineral can fill in the gaps of cooling lava flows. Eventually this will erode away enough that all the small stones that make up this large one will separate from each other.

Posing in front of the Copper Harbor Lighthouse.

Talking 20th century mills in front of the Mohawk mill stack in Gay.

The one-of-a-kind tailings deposit at Gay.


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About Sean Gohman

Currently a PhD Degree seeking student in the Michigan Tech University's Industrial Heritage and Archaeology program.

2 responses to “Field trip!”

  1. Larry Archambeau says :

    I am a former resident of Calumet and am very interested in your work regarding the Warren Stamp Mill, et al, inasmuch as Henry Warren was my great-grandfather. Please keep up the good work and I will contribute more as I learn more and recall more of the stories I heard from my mother and grandparents.

    • Sean Gohman says :

      Thanks for contacting us. We’re looking forward to any information you may provide. Just yesterday we set up our excavation units and one of them is positioned right where historic photos show the stamps were located in this mill. We should be exposing surfaces your great-grandfather worked on and had a hand in constructing.

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