Keweenaw Geoheritage
26 Jun 2014 | Contributor(s):: William I Rose
The site interprets the exposed section of the Mesoproterozoic mid-continent rift, the Keweenaw Peninsula and Isle Royale, Michigan. It includes some of Earth's most voluminous lava flows, a large thrust fault, a vast sequence of fluvial red beds and unique native copper deposits. The geology...