Definitions

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun archaeology, paleontology, geomorphology a geomorphic method of geochronologic dating that uses lichen growth to determine the age of exposed rock: lichens are presumed to increase in size radially at specific rates as they grow

Etymologies

from Wiktionary, Creative Commons Attribution/Share-Alike License

lichen +‎ -metry

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