lichenometryn.
/lʌɪkəˈnɒmɪtri/ Geology.
The dating of moraines or other surfaces recently exposed for lichen colonization by measurement of the size of lichens growing on them.
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the world > the earth > earth sciences > geology > [noun] > dating
tephrochronology1944
lichenometry1957
1957 R. E. Beschel in Arctic (Montreal) X. 60/1 This method that I call lichenometry works well for the last 1,000 years under alpine conditions.
1967 Jrnl. Glaciol. 6 818 The basic premise of lichenometry is that the diameter of the largest lichen thallus growing on a moraine, rock glacier or other surface is proportional to the length of time that the surface has been exposed to colonization and growth.
1973 Oxf. Times 27 July 6/5 There will also be a botanical study of the glaciers and a lichenometry survey to assist the dating of withdrawal of ice.
Derivatives
lichenoˈmetric adj.
ΘΚΠ
the world > the earth > earth sciences > geology > [adjective] > dating
geochronological1919
tephrochronological1944
geochronometric1951
lichenometrical1958
lichenometric1959
1959 Biol. Abstr. 34 861/2 In several glaciers of the group, a lichenometric study was performed.
1967 Jrnl. Glaciol. 6 819 The wide geographic distribution of the species, together with its long life span and consistent size-age relationship make R[hizocarpon] geographicum ideal for lichenometric dating.
lichenoˈmetrical adj.
ΘΚΠ
the world > the earth > earth sciences > geology > [adjective] > dating
geochronological1919
tephrochronological1944
geochronometric1951
lichenometrical1958
lichenometric1959
1958 Arctic (Montreal) XI. 254/1 (heading) Lichenometrical studies in West Greenland.
1964 Geogr. Bull. (Ottawa) Nov. 80 (heading) A lichenometrical study of the north~western margin of the Barnes Ice Cap: a geomorphological technique.
This entry has not yet been fully updated (first published 1976; most recently modified version published online June 2018).
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