Black and White and Red All Over
The Keweenaw Peninsula shoreline tells a billion-year-old story forged in fire, sculpted by ice. Geoheritage tours teach visitors and residents how to read the variegated cliffs, long-tailed tombolos and shifting sands—to see where volcanoes, glaciers and humans irrevocably altered topography. Bill Rose, a Michigan Tech professor emeritus of geology who developed and leads the tours, calls it “geopoetry.”
Visiting tour expert Jo Kalliokoski, head of Michigan Tech’s Geological and Mining Engineering and Sciences Department from 1968-88, is more prosaic. He rolls his eyes and makes a manure-shoveling motion. And holds up an irregularly polka-dotted piece of Jacobsville sandstone for the 15 geotourists gathered on the beach.
“You may have wondered what creates these markings.” The 1995 College of Engineering Academy inductee waits a beat like a comedian delivering the punchline: “We’re not sure.”
Read the full story.