Overview

Although scholars have examined the ethnology, natural history, and geography surrounding the Lewis and Clark Expedition, in the ten expedition reaches Jengo studied, no equivalent earth sciences work exists. Still, multiple scholars questioned the quality, quantity, and accuracy of Lewis and Clark's geological and mineralogical observations, as well as their impact on further scientific inquiry, leading Jengo to scrutinize expedition journals, read hundreds of complex academic geological reports, and utilize rafts, canoes, kayaks, bikes, and hiking trails to visit numerous locations along the route. His extensive research affirms the accuracy and thoroughness of the captains' earth science and geological notations, and he now believes those stinging indictments and misinterpretations are unfair. His new book offers a detailed and accessible presentation of Lewis and Clark Trail geology, delving deep into the geological formations, geomorphic features, and past geological upheavals and catastrophic events, paying attention to the science as it existed in the early 1800s and bringing to light several long-forgotten pioneering geologists. He explores related topics such as native American pictographs, as well as some specific references to art and geological features. Finally, he traces the fate of the rock, mineral, and fossil specimens, even traveling to collection repositories in Philadelphia and Paris.

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9780874224399

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John W. Jengo's career as a geologist, hydrogeologist, and licensed hazardous waste site remediation professional involved cleaning up hazardous wastes for several decades prior to his transition into restoring rivers and improving migratory fish passage via dam removals and enhancing wetlands harmed by industrial discharges. As a lead technical writer, simplified explanations of complex problems and solutions for clients and regulatory agencies. He is the author of numerous peer-reviewed publications and presentations. Clay S. Jenkinson is an American humanities scholar, author and educator. He is currently the director of The Dakota Institute, where he co-hosts public radio's Listening to America, formerly The Thomas Jefferson Hour, and creates documentary films, symposia, and literary projects.

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