Explore Minnesota’s geology in the first annual survey report and discover how early field work informs the state’s rocks and resources.
This volume presents N. H. Winchell’s initial map of the state’s geology, from the base trap and granite rocks to the Galena limestone of the Lower Silurian, and notes practical findings already shaping future work.
The report covers the field season from September to November 1872, surveyed largely by rail and on a tight budget. It explains how a university partnership helps house specimens, run a laboratory, and build a small geological museum while outlining the plan for county-by-county examination and a detailed fossil inventory. The document also discusses economic questions, such as potential salt brine resources, and argues for sustained funding to complete the geological portion first, with botanical and zoological studies following in tandem.
- A connected section of observed strata from the base rocks to Silurian formations is described and mapped.
- A preliminary map outlines the state’s geological boundaries and highlights the work ahead for tracing formations.
- Collaborations with universities and local experts are acknowledged as key to expanding field study and collections.
- Economic interests, including brine and mineral resources, are discussed as important motivators for ongoing research.
Ideal for readers of state history, scientific exploration, and the development of Minnesota’s natural resources.