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USGS · oc33

Thickness and lithology of Upper Ordovician and Lower and Middle Silurian rocks in the Michigan basin

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90° N90° S · 180° W ← longitude → 180° E
Source-reported bounding extent: 40° to 47° latitude; -89° to -81° longitude. This indicates report coverage, not an exact sampling location. View area on OpenStreetMap.

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BibTeXRIS

G. V. Cohee. 1948. Thickness and lithology of Upper Ordovician and Lower and Middle Silurian rocks in the Michigan basin. https://doi.org/10.3133/oc33

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