Time, Cratons, and Voyageurs NP
Time, Cratons, and Voyageurs NP
Time, Cratons, and Voyageurs NP
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Lichenometry: Lichens are symbiotic coloniesof algae <strong>and</strong> fungus which exp<strong>and</strong> across asurface slowly with time, depending on localclimate. Comparison of growth on nearbysurfaces of known age (such as buildings) willpermit the determination of unknown ages,such as rockslides.