1849 Geological Survey Map of Isle Royale, Lake Superior, Michigan – Antique Mineral and Copper Mining Chart

This stunning 1849 geological map of Isle Royale, located in Lake Superior, Michigan, presents an incredibly detailed depiction of the island’s topographical and mineral features. Originally created as part of an extensive geological survey, it highlights copper-rich mineral lands, mining sites, and key geological formations. The intricate linework and color coding differentiate rock types, while annotations mark abandoned mining operations and mineral deposits. Additionally, depth soundings taken from Captain Bayfield’s survey provide insight into the underwater landscape surrounding the island, making this a fascinating resource for historians and geologists alike.

During the mid-19th century, Isle Royale was a major site for mineral exploration, particularly in the search for copper. This map represents a time of early scientific efforts to understand the area’s geology and resources. The craftsmanship of this cartographic piece showcases the meticulous surveying skills of the time. The soft, aged hues and fine engravings make it not only a useful historical document but also a visually striking piece of art.

Printed on high-quality matte paper, this map is a perfect gift for geologists, historians, nature lovers, or anyone with an appreciation for the Great Lakes region. It serves as a fantastic decorative piece for offices, studies, or educational settings, bringing both aesthetic beauty and historical intrigue to any space.