Banded Iron Formation, stromatolite, jasper, Lake Michigans Left Coast, Elizabeth G Fagan, Roscoes Relics

Time and Deep Time

To get a sense of the scale of Earth history, imagine walking back in time, 100 years per step—every pace equal to more than three human generations. A mile takes you 175,000 years into the past. [Twenty miles], a hard day's walk to be sure, correspond to more than 3 million years. But to make … Continue reading Time and Deep Time

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Native American tool, Lake Michigans Left Coast, a blog by Elizabeth Fagan

Native American Tool

The original human residents of the Great Lakes region carved tools from basalt and other hard rocks. Could this be one of them? Glacier action on this piece of basalt does not adequately explain how it fits into a human hand to become a scraper. Copyright, Disclaimer, Bibliography