Chapter 10. Early Paleozoic Earth History. The First Geologic Map. William Smith, a canal builder, published the first geologic map on August 1, 1815. The First Geologic Map. Five of the six geologic Paleozoic systems Cambrian, Ordovician, Silurian, Devonian, and Carboniferous
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Early Paleozoic Earth History
In 1963, American geologist Laurence Sloss proposed that the sedimentary-rock record of North America could be subdivided into six cratonic sequences
By the Early Devonian,
along a divergent plate boundary
The subduction of the Iapetus plate beneath Laurentia
of important mineral resources, including