In January 2021, northeastern Wisconsinites may notice a low-flying helicopter towing a large, hoop-shaped sensor. The helicopter’s sensor uses airborne electromagnetic (AEM) technology to gather data that will help scientists update depth to bedrock maps. …
bedrock
The Precambrian Geology of the Baraboo Hills
In this March 2019 talk for Wednesday Nite @ The Lab (WN@TL), WGNHS geologist Esther Stewart shares her insights into some of Wisconsin’s oldest rocks. It’s a story of reading the deep-time sedimentary record and …