The rocks are exposed along a more than 100-mile stretch of the middle section of the Yukon River, between Galena and Kaltag.
Yoshitsugu Kobayashi , Gilbert Huntington , Tony Fiorillo and Paul McCarthy look over a geologic map of Alaska to figure out where the best opportunity to find a package of 100-million-year-old sedimentary rocks may be.
The rocks are exposed in a number of spots along a more than 100-mile stretch of the middle section of the Yukon River, between Galena and Kaltag. They’re layered like a cake and stacked high, visible in exposed bluffs. “It’s one of those Alaskan things, where knowing about this being here and actually being able to get money to come all the way out here to do the work is not that easy,” McCarthy said. “There’s no oil and gas or mineral reason to be out here doing the work, so it makes it even harder to justify something out here for just the pure joy of science.”
McCarthy and colleagues traveled more than 100 river miles along the Yukon. The goal was to understand how dinosaurs lived in Alaska’s Interior during the early Cretaceous. For his part, McCarthy was tasked with defining the ancient reptiles’ preferred habitat.
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